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Car Forum / Dodge / Dodge Trucks / July 200604 Dodge Ram 1500 lift kit problem
I just installed the 2002-05 RAM 1500 4WD 6” PERFORMANCE SYSTEM made by Fabtech and put 35x12.5 BFG MTs and 17x9 MT classic II rims (see pic here: http://members.cox.net/85cj7/images/NWFb.jpg and http://members.cox.net/85cj7/images/NWFb2.jpg ). and I have 3 major problems: 1). I had the truck aligned before installing the lift (according to lift instructions) and all was fine. I installed the fabtech lift and the truck is now pulling hard to the right. I had the Dodge dealer align the front end and it is still pulling to the right. I returned it to the dealer and had them verify and it is within (factory) specs. Did the fabtech lift change the specs on the camber, caster, and/or toe? I will contact Fabtech directly about this, but I doubt they will admit to it. I think they would have included this in the instructions if the specs changed, right? If they can't supply the new specs - how do I correct the problem? Can I get a shop other that the dealer to align the truck without using factory specs - or - is there no place to start then? 2). I have a vibration at 40-60MPH that is not very nice. (no changes were made to the rear drive shaft, etc....)What components could cause this? I had the tires balanced and they used the stick on lead weights inside the rim. Are tires this big able to be balanced like that? I thought there was something that goes inside the big tires that balances them. 3). I had the dodge dealer recalibrate the computer / speedometer to compensate for larger tires. Now the cruise control only works up to 45MPH (I can only turn on cruise below 40 MPH and then using the buttons on the steering wheel accelerate up to 45MPH before it shuts off). Again, I returned it to the dealer and they says it's not the computer recalibration. They have never heard of the problem. I know it has something to do with the big tires and the computer recalibration, because the cruise worked fine just before the recalibration. Any help or advice would be appreciated. >I just installed the 2002-05 RAM 1500 4WD 6 PERFORMANCE SYSTEM made by >Fabtech and put 35x12.5 BFG MTs and 17x9 MT classic II rims (see pic [quoted text clipped - 13 lines] >the problem? Can I get a shop other that the dealer to align the truck >without using factory specs - or - is there no place to start then? It will change the caster which can effect directional control and bear in mind that the front end was NEVER disigned for the added stress that this adds to vehcile some there will be issues. Have dealer print out alignemnt setting on vehicle now and I can tell you what to do because factory spec co out the wind with a lift. If you want it to track right you will need to do some tweaking here. >2). I have a vibration at 40-60MPH that is not very nice. (no changes >were made to the rear drive shaft, etc....)What components could cause >this? I had the tires balanced and they used the stick on lead weights >inside the rim. Are tires this big able to be balanced like that? I >thought there was something that goes inside the big tires that balances >them. With heavier and larger rotating masses it is harder to balance plus ujoints in drive shfts are not constant velocity and they can cause vibration at higher angle and the higher tourqe load on them from much larger tires with stock gear makes it even worse. >3). I had the dodge dealer recalibrate the computer / speedometer to >compensate for larger tires. Now the cruise control only works up to [quoted text clipped - 6 lines] > >Any help or advice would be appreciated. You need more the a speed calibration here. YOu effectively made your final drive ratio about 2 steps taller and through in bigger tire drag and your drive train will work a lot harder and your RPM is lowr at 40 than before becausethis (it is equal RPM wise to about 32 before the lift) To fix this and make truck run a lot better you need at least 4.56's and 4.88 would be better still them recal speedo and such and you will get what you are looking for and longer driveline life with much better performance too. ----------------- The SnoMan www.thesnoman.com >>I just installed the 2002-05 RAM 1500 4WD 6” PERFORMANCE SYSTEM made by >>Fabtech and put 35x12.5 BFG MTs and 17x9 MT classic II rims (see pic [quoted text clipped - 20 lines] > what to do because factory spec co out the wind with a lift. If you > want it to track right you will need to do some tweaking here. Specs are: Left Front: Camber = -0.0° specified range = -0.5° 0.5° Caster = 4.5° specified range = 4.0° 5.2° Toe = 0.05° specified range 0.00° 0.10° Right Front: Camber = -0.2° specified range = -0.5° 0.5° Caster = 4.2° specified range = 4.0° 5.2° Toe = 0.06° specified range 0.00° 0.10° >>2). I have a vibration at 40-60MPH that is not very nice. (no changes >>were made to the rear drive shaft, etc....)What components could cause [quoted text clipped - 27 lines] > you will get what you are looking for and longer driveline life with > much better performance too. What does this have to do with the computer controlled cruise control? The cruise should work based solely on the speedometer -or- the wheel speed sensor. Somethig is not programmed correctly allowing it to switch off at 45MPH. Snoman - I really appreciate any advice here, but you need to work on spelling / typos before posting. I really don't understand some of your info, even when using contextual clues. > ----------------- > The SnoMan > www.thesnoman.com >Specs are: >Left Front: [quoted text clipped - 6 lines] >Caster = 4.2° specified range = 4.0° 5.2° >Toe = 0.06° specified range 0.00° 0.10° Okay for starters, you always put more caster in right side than left because roads tend to be crowned and you are a tiny bit left side heavy so that with crowns will tend to make it go right and the extra caster takes care of that. Try leaving left side caster alone and increase right caster to 5.0. If it still pulls, take left side down to about 4.0. On the camber, I like to see more here because of lift. Shoot for +.5 on both sides. The negative chamber on right side is also helping it pull too. Toe looks good. If it wants to follow crack after resetting caster and camber I will tell you what to tweak on toe. >What does this have to do with the computer controlled cruise control? >The cruise should work based solely on the speedometer -or- the wheel >speed sensor. Somethig is not programmed correctly allowing it to switch >off at 45MPH. It has everything to do with it because cruise control has a lower engine RPM limit because of engine and transmission function. It is this limit that determines the lower limit of it and when you increased tire size without changing axle ratio (which you really need to do here big time) you increased the relative vechicle speed at same engine RPM vs with stock tires hense the higher minimum speed for cruise. Follow now? >Snoman - I really appreciate any advice here, but you need to work on >spelling / typos before posting. I really don't understand some of your >info, even when using contextual clues. Sorry about the typo's. Some times it is me and sometimes it is this wireless keyboard that I am using. Sometimes I press one letter and get another but some of it is me. (I have a big monitor that I sit back from with keyboard in my lap and mouse is wireless too) >> ----------------- >> The SnoMan >> www.thesnoman.com ----------------- The SnoMan www.thesnoman.com >>Specs are: >>Left Front: [quoted text clipped - 17 lines] > after resetting caster and camber I will tell you what to tweak on > toe. OK, I'll try to get them to do the corrections - I need to make friends with someone that has a machine, cause I can't afford $59.95 everytime I need to tweak this thing. >>What does this have to do with the computer controlled cruise control? >>The cruise should work based solely on the speedometer -or- the wheel [quoted text clipped - 8 lines] > engine RPM vs with stock tires hense the higher minimum speed for > cruise. Follow now? I am tracking.....somewhat. I know I need new gears, but I was under the impression that the cruise would work directly with the speedo recalibration. You are saying the cruise control works on engine RPM as well as speed? Can't the dealer program around this? >>Snoman - I really appreciate any advice here, but you need to work on >>spelling / typos before posting. I really don't understand some of your [quoted text clipped - 4 lines] > get another but some of it is me. (I have a big monitor that I sit > back from with keyboard in my lap and mouse is wireless too) NP - thanks again for the advice! >>>----------------- >>>The SnoMan [quoted text clipped - 3 lines] > The SnoMan > www.thesnoman.com >OK, I'll try to get them to do the corrections - I need to make friends >with someone that has a machine, cause I can't afford $59.95 everytime I >need to tweak this thing. You need to take it someplace where they warrant alignment for 90 or 180 days so you can get them the tweak it. Besides, they did not align it correctly anyway. In the old days when I learned about it from old timers, they would see how the car drove and check what it did and then read the front end and adjust it to correct it based on experiance. Today a alignment tech just follows spec and has no creativety to tweak it correctly because they are not really running the show per say as software is. Also factroy alignement specs are not absolute because of production variances two cars may need to be tweaked differently to do their best and as I said when you lift it, factory specs are a guideline that you build on, not follow blindly. >I am tracking.....somewhat. I know I need new gears, but I was under the >impression that the cruise would work directly with the speedo >recalibration. You are saying the cruise control works on engine RPM as >well as speed? Can't the dealer program around this? I guess you are not completely following me here or perhaps I am not explaing it correctly. You cannot program the engine to run cruise control at a lower RPM because the tranny is part of the picture too and it has its RPM input requirements to for minumum speed control and gear and lockup as well. If you want cruise control to work again at lower speed you will have to regear truck (which you need to do any way) as they is no fix otherwise. The dealer programing just fixed speedot. Shifts are happening at same general RPM as before but that RPM yeilds higher speeds in each gear now and I will bet that OD right now is about useless. Your car is acting the same it would if you had stock tires and put taller gears in it. >NP - thanks again for the advice! Keep me posted because I know I can fix the pulling problem once we get your truck dialed in proper. Do not feel bad, when I had my 2000 K3500 aligned for the first time last year, I took it back 3 times at not charge before they got it right (they finally did what I told them to do and it cured it) and it is still good today. ----------------- The SnoMan www.thesnoman.com >>OK, I'll try to get them to do the corrections - I need to make friends >>with someone that has a machine, cause I can't afford $59.95 everytime I [quoted text clipped - 23 lines] > gear and lockup as well. If you want cruise control to work again at > lower speed you will have to regear truck now see he's not the only one not following you because his complaint was that the cruise would not work OVER 45 mph. how does minimum speed control figure in?  Signature---------------------------- -Chris 05 CTD 06 Liberty CRD Real Trucks don't NEED spark plugs. (which you need to do any > way) as they is no fix otherwise. The dealer programing just fixed > speedot. Shifts are happening at same general RPM as before but that [quoted text clipped - 12 lines] > The SnoMan > www.thesnoman.com >now see he's not the only one not following you because his complaint was >that the cruise would not work OVER 45 mph. how does minimum speed control >figure in? That part is easy. With his tall tires with stock gears the engine requires too much manifold pressure to cruise normally and the cruise control will not engage unless the manifold pressure is above a certain level when you select it. (what this means is vacum is too low and cruise is vacum controlled too) Did you get that part? People install large lifts and tires with stock gear and expect a simple programming to fix everything. His lift and tires is a lot and it is overtaxing the drive train and its controls. If he would simply put some 4.88 or deeper gears in it his troubles would go away and it would aslo run a LOT better too. (there is more than just effective gear ratio hear as there is the extra drag from lift and increased rolling resistance of tires too.) What was a good cruise RPM with stock tires and no lift no longer applies and you need a cruise RPM a bit higher now to have more cruise power to overcome this added load. Below is a link to a tire size/axle ratio calculator. http://www.snoman.com/HTML/axlecalc_5a.html ----------------- The SnoMan www.thesnoman.com > and cruise is vacum controlled too) Did you get that part? People > install large lifts and tires with stock gear and expect a simple > programming to fix everything. That's funny, because my '99 Ram ran just fine with 35x14.5" Mickey's and a 4.5" lift, with the stock gears for a long time. I simply corrected the speedometer with a little electronic box (started with an Abbott ERA, but switched to a Superlift Truspeed when I went up to 38's), and never had a problem with cruise control - it would engage around 37-38MPH, and wouldn't ever cut out (at least to 85MPH or so). >> and cruise is vacum controlled too) Did you get that part? People >> install large lifts and tires with stock gear and expect a simple [quoted text clipped - 6 lines] >problem with cruise control - it would engage around 37-38MPH, and wouldn't >ever cut out (at least to 85MPH or so). Funny thing is you have a older car with older style control and I know it is a slug without riding in it if it has stock gears. My daughter DOHC Saturn would eat it up at higher speeds and my stock K3500 would badly embarrass it at all speeds. I by a truck for power not looks and I would not do any mod that would take that away and no chip or air filter on tune will fix big tires and a lift, you needs gears. If you feel you have good performance that just tell me that yu have lower standards because the physics of it proves otherwise. ----------------- The SnoMan www.thesnoman.com wait now you talk about manifold pressures. fine I understand about naturally aspirated engines. I do not claim to understand (without researching it further) ALL of the factors the program looks at in order to engage the cruise. whether the MAP is one of those sensors for sure I'm not going to comment on. ALTHOUGH this has nothing to do with "minimum speed" so I ask again. what does minimum speed have to do with not engaging over 45 mph? I await an answer that actually has something to do with the minimum speed. Signature---------------------------- -Chris 05 CTD 06 Liberty CRD Real Trucks don't NEED spark plugs. > >>now see he's not the only one not following you because his complaint was [quoted text clipped - 21 lines] > The SnoMan > www.thesnoman.com > certain level when you select it. (what this means is vacum is too low > and cruise is vacum controlled too) Did you get that part? And another thing... why are you blabbing on and on about engine vacuum? Let me quote you something from the '04 service manual: 5.7L Gas The speed control system is fully electronically controlled by the Powertrain Control Module (PCM). A CABLE AND A VACUUM CONTROLLED SERVO ARE NOT USED. This is a servo-less system. The controls consist of two steering wheel mounted switches. The switches are labeled: ON/OFF, RES/ACCEL, SET, COAST, and CANCEL. The system is designed to operate at speeds above 30 mph (50 km/h). >> certain level when you select it. (what this means is vacum is too low >> and cruise is vacum controlled too) Did you get that part? [quoted text clipped - 9 lines] >COAST, and CANCEL. The system is designed to operate at speeds above 30 mph >(50 km/h). Tom, you are the one blabing here and you think that engien vacum has not effect on been able to use cruise control. If the ECM thinks the engine is laboring too much (MAP and RPM) it will not let cruise engaged but you are likely one of those that want to beleive that truck systems are immune to this stuff. BTW with his current setup he will be turning about 1500 RPM in drive at 45 and a little over 1000 RPM in OD and no "Hemi" is going to what to pull that and the drag with it in cruise control. I could even calculate how much power is required and what is availble but you would think that is BS too because you do not understand any of the physics here only your ego. ----------------- The SnoMan www.thesnoman.com >>> certain level when you select it. (what this means is vacum is too >>> low and cruise is vacum controlled too) Did you get that part? [quoted text clipped - 12 lines] > Tom, you are the one blabing here and you think that engien vacum has > not effect on been able to use cruise control. I think the vacuum is somewhere else, else? If the ECM thinks the > engine is laboring too much (MAP and RPM) it will not let cruise > engaged but you are likely one of those that want to beleive that [quoted text clipped - 4 lines] > required and what is availble but you would think that is BS too > because you do not understand any of the physics here only your ego. Give us a break. You are book smart, but try the real man's world. Sweet Daddy > ----------------- > The SnoMan > www.thesnoman.com Well snowman, here is the point that you seem to be missing. IT DID WORK PRIOR TO THE REPROGRAMMING according to the OP and unless a speedo reprogramming somehow changed the load on the engine or the vacuum.... SignatureIf at first you don't succeed, you're not cut out for skydiving > > >> certain level when you select it. (what this means is vacum is too low [quoted text clipped - 24 lines] > The SnoMan > www.thesnoman.com > Well snowman, here is the point that you seem to be missing. IT DID WORK > PRIOR TO THE REPROGRAMMING according to the OP and unless a speedo > reprogramming somehow changed the load on the engine or the vacuum.... Actually I never tried the cruise before the reprogram...I really wish I had now though! > Actually I never tried the cruise before the reprogram...I really wish I > had > now though! I didn't explain fully - I took the truck on a 1000 mile road trip for the 4th of July, the cruise worked fine as it always has....on the 15th I installed the lift / tires. I had the computer recalibrated after that and the very next day I noticed the cruise didn't work properly. I know and already planned on re-gearing the axles after the lift, but not until I can afford it (2-3 months). I assumed the speedo recal would fix the computer with -or- without the gears. I assume now that I will have to get the computer recalibrated again after the re-gear? > I assume now that I will have to get the computer recalibrated again after > the re-gear? Actually, no - you won't. Speed is determined by rear axle rotation speed, which is directly related to the diameter of the tires. Changing the gear ratio won't change the number of revs per mile for your tire (probably around 601 or so), so the speedometer will remain correct no matter what gear ratio you put in. Close, my tires do598 rotation per mile....and that's good to know. Thanks for the info, now I am positive that the dealer screwed something up with the computer. >> I assume now that I will have to get the computer recalibrated again >> after the re-gear? [quoted text clipped - 4 lines] > (probably around 601 or so), so the speedometer will remain correct no > matter what gear ratio you put in. My mistake, I thought that I read that you did. SignatureIf at first you don't succeed, you're not cut out for skydiving > > Well snowman, here is the point that you seem to be missing. IT DID WORK > > PRIOR TO THE REPROGRAMMING according to the OP and unless a speedo > > reprogramming somehow changed the load on the engine or the vacuum.... > > Actually I never tried the cruise before the reprogram...I really wish I had > now though! > Tom, you are the one blabing here and you think that engien vacum has > not effect on been able to use cruise control. You're the one who said, "cruise is vacum controlled too" (spelling mistake and all). I'm simply pointing out that you have no comprehension of the systems you profess so much knowledge in. > If the ECM thinks the engine is laboring too much (MAP and RPM) it will > not let cruise > engaged But it is engaging just fine... it's suddenly DISengaging at 45MPH. I believe the dealership screwed something up when they changed the pinion factor in the PCM. The only reasons the CC would automatically disengage is if it thought the trans was in park or neutral, if the RPM increased rapidly (like a clutch was disengaged in a M/T vehicle - N/A here), excessive engine RPM (again, mostly a M/T issue), a speed signal that increases 10MPH/s (spinning the tires), or a speed signal that decreases 10MPH/s (vehicle hit something). It will also disengage above 85MPH. There's zero mention of engine vacuum as a cause of CC disengagement anywhere in the FSM. None. Zip. Nada. The fact that hundreds of other truck owners have upgraded to 35" tires (it's been a very popular upgrade) without issue, also leads me to believe there's something "screwy" with his particular truck. > truck systems are immune to this stuff. BTW with his current setup he > will be turning about 1500 RPM in drive at 45 Actually, 1700 - but let's not nitpick. > and a little over 1000 RPM in OD Which OD? There's two of 'em, y'know... So - if you're correct, and it's vacuum-related, he should be able to select manual '2', engage CC at 40MPH, and accelerate via the CC controls up to 50MPH, no problem (that'll start him out at about 2500RPM, and finish up about 3100RPM). If it still cuts out at 45MPH, then what will your answer be? > So - if you're correct, and it's vacuum-related, he should be able to > select > manual '2', engage CC at 40MPH, and accelerate via the CC controls up to > 50MPH, no problem (that'll start him out at about 2500RPM, and finish up > about 3100RPM). If it still cuts out at 45MPH, then what will your answer > be? I tried it . even in "2" with 3200 RPMs the cruise still shuts off at 40 MPH. In the service manual it says it is designed to work above 30 MPH, but I was testing it this morning and had it set at 25MPH and it worked. I'm baffled but the dealer is supposed to fix it on Thursday. > I tried it . even in "2" with 3200 RPMs the cruise still shuts off at 40 > MPH. Yeah... Definately a vacuum problem. Def-def-definately. Uh-oh... three minutes to Wapner... Hey Snoman... any other bright ideas? >>> certain level when you select it. (what this means is vacum is too low >>> and cruise is vacum controlled too) Did you get that part? [quoted text clipped - 20 lines] >required and what is availble but you would think that is BS too >because you do not understand any of the physics here only your ego. yeah, but he has a bigger gun than you do. >----------------- >The SnoMan >www.thesnoman.com SnoMan, I am a professional installer of 12 volt aftermarket electronics and I am here to tell you that engine vacuum has NOTHING to do with nor does it effect (as you say) a completely ELECTRONIC cruise control, factory or aftermarket. An electric cruise will (and does in most cases) get its signal for vehicle speed from the VSS. There are no vaccum lines hooked up anywhere on the units, so explain to me how vaccum effects them? >>> certain level when you select it. (what this means is vacum is too low >>> and cruise is vacum controlled too) Did you get that part? [quoted text clipped - 25 lines] > The SnoMan > www.thesnoman.com . > SnoMan, > [quoted text clipped - 6 lines] > vehicle speed from the VSS. There are no vaccum lines hooked up anywhere > on the units, so explain to me how vaccum effects them? he can't, and I'm still waiting on my question to be answered. Signature---------------------------- -Chris 05 CTD 06 Liberty CRD Real Trucks don't NEED spark plugs Chris, How is the wife liking the Liberty? My wife and I are thinking about getting one for her, with the CRD. > . >> SnoMan, [quoted text clipped - 9 lines] > > he can't, and I'm still waiting on my question to be answered. she loves it. she's getting 22 - 25 mpg out of it driving to and from work. she works about 30 miles away and drives interstate at 75 - 80 mph. if she slows it down to 65 - 70 she gets better, closer to 30. I've read that the liberty CRD will not see production for the 07 model year, something about emissions. but they are going to introduce a diesel powered Grand that will see mpg numbers closer to what the Cummins powered trucks are seeing. Signature---------------------------- -Chris 05 CTD 06 Liberty CRD Real Trucks don't NEED spark plugs. > Chris, > [quoted text clipped - 14 lines] >> >> he can't, and I'm still waiting on my question to be answered. That figures. Come out with something that works and works well and when we have a problem lets drop it instead of fixing it. I guess my wife would be happy though, as she has always loved the Grands. > she loves it. she's getting 22 - 25 mpg out of it driving to and from > work. she works about 30 miles away and drives interstate at 75 - 80 mph. [quoted text clipped - 22 lines] >>> >>> he can't, and I'm still waiting on my question to be answered. Tara would rather have the liberty than the Grand. easier to park. the grand is close the size of the old durango and she says the liberty is much better suited to running around in town than the durango was. food for thought. but yes I agree its a shame that the CRD is seeing its end this year and I've already sent my email to that affect, of course my little spill did nothing to change minds but it made me feel better to have voiced my opinion on them dropping it. Signature---------------------------- -Chris 05 CTD 06 Liberty CRD Real Trucks don't NEED spark plugs. > That figures. Come out with something that works and works well and when > we have a problem lets drop it instead of fixing it. I guess my wife [quoted text clipped - 26 lines] >>>> >>>> he can't, and I'm still waiting on my question to be answered. Real Trucks don't NEED spark plugs. > she loves it. she's getting 22 - 25 mpg out of it driving to and from > work. she works about 30 miles away and drives interstate at 75 - 80 mph. [quoted text clipped - 3 lines] > powered Grand that will see mpg numbers closer to what the Cummins powered > trucks are seeing. in addition when i told her about your question she said "HURRY!!!" she highly recomends the CRD over the gas versions of the liberty. here's the link to the article in USA TODAY. http://www.usatoday.com/money/autos/2006-06-05-diesel_x.htm > ---------------------------- > -Chris [quoted text clipped - 6 lines] >> How is the wife liking the Liberty? My wife and I are thinking about >> getting one for her, with the CRD. Thanks for the link. Maybe we will be able to find a real good used one if it comes down to that when we do this. She also likes the Toyota Highlander, and since it will be HER vehicle not mine, what ever she wants is what she will get. > Real Trucks don't NEED spark plugs. >> she loves it. she's getting 22 - 25 mpg out of it driving to and from [quoted text clipped - 22 lines] >>> How is the wife liking the Liberty? My wife and I are thinking about >>> getting one for her, with the CRD. > . >> SnoMan, [quoted text clipped - 9 lines] > > he can't, and I'm still waiting on my question to be answered. He did. His explanation made sense since I've seen the same thing on my Hyundai. Left the auto-stick in 4th (OD) and climbed a very steep hill at 55 (1800 rpm or so, on a 2.7L V6, rolling weight about 4300#)... It pulled the accelerator to the floor, dropped out of lockup, kept losing speed, and after a second or two the cruise "let go". Luckily nobody was behind me, else it might have been an embarrassing situation (its embarrassing enough already, I drive a Hyundai SUV) It has a Mitsubishi electronic cruise module controlled by the ECM - its got a regular ol' throttle cable for the human interface. Hmm, aren't the Hemis "throttle-by-wire" (I know the 4.7's are)? This would mean the cruise and "your foot" actually run the same servo on the side of the throttle body, so therefore the problem wouldn't be the servo unless the accelerator pedal didn't work either. JS . >> . >>> SnoMan, [quoted text clipped - 27 lines] > > JS There's zero mention of engine vacuum as a cause of CC disengagement anywhere in the FSM. None. Zip. Nada. as posted by Tom L. further in an auto trans setup it should downshift to a lower gear to achive the torque multiplication needed to maintain the speed (an autostick doesnt do this as you select the gears like in a standard shift) Signature---------------------------- -Chris 05 CTD 06 Liberty CRD Real Trucks don't NEED spark plugs > . >>> . [quoted text clipped - 30 lines] > There's zero mention of engine vacuum as a cause of CC disengagement > anywhere in the FSM. None. Zip. Nada. Weird. I originally attributed mine to a potentially misadjusted cruise cable (system freaking out due to the servo not being able to pull farther). I rarely leave it in manual shift mode when using the cruise unless I'm locking it into 3rd in hilly terrain with 4 people in it... > as posted by Tom L. > > further in an auto trans setup it should downshift to a lower gear to achive > the torque multiplication needed to maintain the speed (an autostick doesnt > do this as you select the gears like in a standard shift) Yeah. It can pull itself out of lock-up, but it won't downshift out of 4th until it drops under 30-35 or so. JS On Mon, 24 Jul 2006 21:41:56 -0400, "Chris Thompson" >he can't, and I'm still waiting on my question to be answered. and what question is that? You guys turned this into a circus. ----------------- The SnoMan www.thesnoman.com >On Mon, 24 Jul 2006 21:41:56 -0400, "Chris Thompson" >> >>he can't, and I'm still waiting on my question to be answered. > >and what question is that? You guys turned this into a circus. "us guys" only took what you offerred. a little late to start whining. >----------------- >The SnoMan >www.thesnoman.com >SnoMan, > [quoted text clipped - 6 lines] >vehicle speed from the VSS. There are no vaccum lines hooked up anywhere on >the units, so explain to me how vaccum effects them? The electronic cruise is monitored by ECM and if the engine does npt have the needed power reserve to power it, it will not let it engage. It is not transparent as you assume. It determines this by MAP or Vacum (which ever term you want to use) ----------------- The SnoMan www.thesnoman.com Really, then how come NONE of the Rostra electronic cruise control units I sell and install have no vaccum line hook ups, NONE use MAP, vaccum, or manifold pressure? They will ALL engage at 25 mph or higher, etc.. Oh hell you know it all. >>SnoMan, >> [quoted text clipped - 15 lines] > The SnoMan > www.thesnoman.com According to my calculations - and a lot of online calculators - I'd say the truck would be better off with 4.11 gears.... > To fix this and make truck run a lot better you need at least > 4.56's and 4.88 would be better still them recal speedo and such and [quoted text clipped - 3 lines] > The SnoMan > www.thesnoman.com >I just installed the 2002-05 RAM 1500 4WD 6” PERFORMANCE SYSTEM made by >Fabtech and put 35x12.5 BFG MTs and 17x9 MT classic II rims (see pic here: [quoted text clipped - 13 lines] > a shop other that the dealer to align the truck without using factory > specs - or - is there no place to start then? Camber and Caster are the angles that would cause a pull toe in wouldnt. i would further check to make sure the rest of the of the suspension is tight. take it to a requtable front end shop. sounds like your going to need quality, qualified professional help on this one. > 2). I have a vibration at 40-60MPH that is not very nice. (no changes were > made to the rear drive shaft, etc....)What components could cause this? I > had the tires balanced and they used the stick on lead weights inside the > rim. Are tires this big able to be balanced like that? I thought there was > something that goes inside the big tires that balances them. my first guess would be that you have changed your driveline angles. your u joints may be running at too high of an angle. its not a big deal if you know what your doing. but thats the thing you need to know what your doing here too. > 3). I had the dodge dealer recalibrate the computer / speedometer to > compensate for larger tires. Now the cruise control only works up to 45MPH [quoted text clipped - 4 lines] > something to do with the big tires and the computer recalibration, because > the cruise worked fine just before the recalibration. sorry cant help you on this one. > Any help or advice would be appreciated. your welcome, hope i've been of some help. >>I just installed the 2002-05 RAM 1500 4WD 6 PERFORMANCE SYSTEM made by >>Fabtech and put 35x12.5 BFG MTs and 17x9 MT classic II rims (see pic here: [quoted text clipped - 18 lines] >take it to a requtable front end shop. sounds like your going to need >quality, qualified professional help on this one. Actualimproper toe in with a improper camber can indeed pull as iot can aggrevate it. ANd again, stock alignment spec tend to be a starting point with a lift, not the final word because the stress on front end (which does actually flex some) has all changed with a big lift with oversized tires. (it changes the load center relative to axle pivots and the forces the road transmitts back to steering axle relatie to them) >> 2). I have a vibration at 40-60MPH that is not very nice. (no changes were >> made to the rear drive shaft, etc....)What components could cause this? I [quoted text clipped - 21 lines] > >your welcome, hope i've been of some help. ----------------- The SnoMan www.thesnoman.com > Camber and Caster are the angles that would cause a pull toe in wouldnt. i > would further check to make sure the rest of the of the suspension is tight. > take it to a requtable front end shop. sounds like your going to need > quality, qualified professional help on this one. All fasteners were re torqued to specs after 100 miles...everything is dead on. I switched front tires from side to side and it still pulls right slightly. Seems to be less than before the switch tho. >>2). I have a vibration at 40-60MPH that is not very nice. (no changes were >>made to the rear drive shaft, etc....)What components could cause this? I [quoted text clipped - 6 lines] > know what your doing. but thats the thing you need to know what your doing > here too. The lift was designed to keep factory drive line angles, the front diff was dropped to compensate, the rear was only lifted ~1" using helper springs, there is no stress on any of the u-joints. I think the vibe is tire related now. >>3). I had the dodge dealer recalibrate the computer / speedometer to >>compensate for larger tires. Now the cruise control only works up to 45MPH [quoted text clipped - 4 lines] >>something to do with the big tires and the computer recalibration, because >>the cruise worked fine just before the recalibration. > sorry cant help you on this one. > >>Any help or advice would be appreciated. > > your welcome, hope i've been of some help. I've lurked here for a while (I've owned dodge trucks for the past 4-5 years) but I don't read posts unless I need info, and I don't feel I know enough to pass info to others. I get the feeling that not many people like the SonMan. Should I be taking his advice - or ? He seems to be very knowledgable on the subject, more so that the service techs at the dealer that I have dealt with. > I've lurked here for a while (I've owned dodge trucks for the past 4-5 > years) but I don't read posts unless I need info, and I don't feel I know > enough to pass info to others. I get the feeling that not many people like > the SonMan. Should I be taking his advice - or ? He seems to be very > knowledgable on the subject, more so that the service techs at the dealer > that I have dealt with. This is a unmoderated newsgroup. Anybody can give any advice they feel like. YOU have to decide who's advice is good and who's is not. Myself, I'm comfortable with advice and info I've received from Tom Lawrence, Denny, Wiley, Mac, Tbone, theguy, beekeep, JS, mac, chris and a couple of others. I'm sure that if you read back over your thread you will figure out who to listen to. Roy |
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