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Car Forum / Jeep / April 2004XJ 4.0 loses power on left turns
96 XJ 4.0 AT loses power when you make hard left turns. The seller was *very* upfront w/this detail long before I did a test-drive. What do you all think? Shamus > 96 XJ 4.0 AT loses power when you make hard left turns. The seller was > *very* upfront w/this detail long before I did a test-drive. What do you > all think? > > Shamus Loses electrical power, as in dash lights etc., or loses power like the engine wants to stop running but the lights etc. keep working? Chris Sorry, engine loses power. You gotta give it a little more pedal and almost feather it to get any ooomph. > > 96 XJ 4.0 AT loses power when you make hard left turns. The seller was > > *very* upfront w/this detail long before I did a test-drive. What do you [quoted text clipped - 6 lines] > > Chris OK, obviously it is fuel injected, so that rules out float levels, lol. It could be something that is causing the fuel supply to stop, or something that is losing electrical contact due to a lose wire, bad ground, etc. I would check for any lose connections. My gut feeling though is that it might be a fuel issue. The fuel pickup in the tank may not be "right" and may be sucking air when you make a left turn. You could probably test this by jacking the left side of the vehicle up as high as possible (safely of course) and see if it does the same thing. Chris > Sorry, engine loses power. You gotta give it a little more pedal and almost > feather it to get any ooomph. [quoted text clipped - 10 lines] > > > > Chris Shamus in CO did pass the time by typing: > 96 XJ 4.0 AT loses power when you make hard left turns. The seller was > *very* upfront w/this detail long before I did a test-drive. What do you > all think? Long shot. Check the motor mounts to see if the driver's side is broken. Check all the throttle body links and hoses for anything that could be binding up. Not so long shot. Crank the steering to full lock left plus just a touch more (don't keep it there, it's hard on the pump) see if that lag is caused by a binding steering system causing more drag on the PS pump and therefore on the engine. Try the same thing to the right. Should put the same lag on the engine if everything is normal. Another. Pop the cap off the distributor and see if there is oil in there. That shouldn't be causing any problems unless there is a lot. (there should be none) If there is oil in there you need to replace the distributor. (easy job) Hard to tell for sure, there could be all sorts of things even down to bad diffs (but you should hear that easily). I'm guessing here (as if you can't tell) :) mmm.. Guinness. :D  SignatureDougW "DougW" <post.replies@invalid.address> wrote in message : Hard to tell for sure, there could be all sorts of things even down to bad : diffs (but you should hear that easily). : : I'm guessing here (as if you can't tell) :) : : mmm.. Guinness. :D LOL!!! I will archive this message for the next time my XJ is running rough... "Honey, look here, it might be the diffs. Why don't I swap in those 44's... just in case!" -Brian Cherokee-LTD did pass the time by typing: > "DougW" <post.replies@invalid.address> wrote in message >> [quoted text clipped - 8 lines] > rough... "Honey, look here, it might be the diffs. Why don't I swap in those > 44's... just in case!" You never know when that rough running is being caused by having too small a tire or the cabin noise from being too close to the road. Now you can justify larger wheels and a lift kit. :) SignatureDougW : Cherokee-LTD did pass the time by typing: : > "DougW" <post.replies@invalid.address> wrote in message [quoted text clipped - 14 lines] : : Now you can justify larger wheels and a lift kit. :) Ahh yes... I found that my Astro was too light in the rear for the snow... the addition of three amps and 2-12" subs has really planted those rear tires in slippery conditions. -Brian Just a question on the dist cap....how would oil get in to that except by an crack on the outside that had oil dumped on to? I'm not all that engine savvy but thought that the dist cap just sat on top of a spindle with a gear on the end of which poked down in to the motor somewhere..... sb > Shamus in CO did pass the time by typing: > > 96 XJ 4.0 AT loses power when you make hard left turns. The seller was [quoted text clipped - 23 lines] > > mmm.. Guinness. :D SB did pass the time by typing: > Just a question on the dist cap....how would oil get in to that except by an > crack on the outside that had oil dumped on to? The distributor sits down in the block and its gear gets oil from the engine. There is a seal (bushing) pressed into the shaft that keeps oil from getting up to the cap and rotor. As that bushing wears, oil can work up into the base of the distributor and start to foul the internals. Generally the dist gets so much slop it throws the timing off or starts damaging the posts. Long time back this was more important because the points sat low enough to get crudded up with oil. > I'm not all that engine savvy but thought that the dist cap just sat on top > of a spindle with a gear on the end of which poked down in to the motor > somewhere..... It does. There is also a small blade on the end of that shaft that turns your oil pump and the little gear is turned by your camshaft. This is my experience. http://members.cox.net/wilsond/distributor/ SignatureDougW I've never held it in my hands so I'm trying to picture it....but I guess I could see how it'd get up there....but inside.... I don't have one on my '02 (coils??/ignition module??). sb > SB did pass the time by typing: > > Just a question on the dist cap....how would oil get in to that except by an [quoted text clipped - 18 lines] > This is my experience. > http://members.cox.net/wilsond/distributor/ When the top seal fails on the oil pump, the distributor can get filled up. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's > Just a question on the dist cap....how would oil get in to that except by an > crack on the outside that had oil dumped on to? [quoted text clipped - 41 lines] > > -- > > DougW : 96 XJ 4.0 AT loses power when you make hard left turns. The seller was : *very* upfront w/this detail long before I did a test-drive. What do you : all think? : : Shamus Hey Shamus, A friend of mine (Mo) went through this years ago with an Dodge van (318 w/carb) and the obvious solution was stop making left turns. When that joke got old he brought it into a friends shop (Garry). Garry replaced many, many components ($400+) and Mo was getting a little pissed off so he took it to a well equipped shop where they said "Oh, it's your coil... $60.00". Mo and Garry don't get along very well anymore. The moral of the story: a: check the coil b: before you start guessing and throwing money into it, you may be wise to shell out a few bucks to have it checked by a qualified, well equipped shop. Good of the seller to be forthright, maybe they have tried a few things and could pass on some more info. -Brian I would be looking for a wire on the exhaust manifold or on the pipe that is 'almost' touching. Turn a corner and gravity does it's thing. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's > 96 XJ 4.0 AT loses power when you make hard left turns. The seller was > *very* upfront w/this detail long before I did a test-drive. What do you > all think? > > Shamus Mike Romain did pass the time by typing: > I would be looking for a wire on the exhaust manifold or on the pipe > that is 'almost' touching. Turn a corner and gravity does it's thing. Heh.. Like this one for my O2 sensor that was burned. http://members.cox.net/wilsond/temp/damage.jpg That happened down on the engine just forward of where the O2 sensor harness clips to the oil pan. There is a bolt and clip that holds it to the engine block. Seems it can get a _tad_ too close to the header or get pinched in the clip. The excess heat also makes the wire brittle, I had to clean and strip about 4" of wire and re-inusulate it with rubber tape. (splicing is optional) To reroute it I used the upper rear PS adjustment bolt to hold the clip in and ran the wire way clear of the header. Sorry, no pics. :( I need to clean up some space on the ol website. SignatureDougW DougW did pass the time by typing: > Mike Romain did pass the time by typing: >> I would be looking for a wire on the exhaust manifold or on the pipe [quoted text clipped - 4 lines] > Like this one for my O2 sensor that was burned. > http://members.cox.net/wilsond/temp/damage.jpg Missed one. This is the clip. http://members.cox.net/wilsond/temp/holddown.jpg Or it could be your infamous ground strap and the engines making a ground somewhere else and on left turns the engine tilts away from that connection. God Bless America, ßill O|||||||O mailto:LWHughes3rd@aol.com http://www.billhughes.com/ > I would be looking for a wire on the exhaust manifold or on the pipe > that is 'almost' touching. Turn a corner and gravity does it's thing. > > Mike > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > 88 Cherokee 235 BFG AT's |
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