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Car Forum / Driving, Maintenance, Tuning / Maintenance and Repair / August 2007'97 jeep wrangler hesitation in the morning...
1997 Jeep Wrangler SE 4 cyl, 2.5L, 5 spd, 87K miles It seems every other time I start my 97 wrangler after sitting over night or longer, I get erratic idling at startup and the first time I shift into 2nd gear when taking off, i get a hesitation and loss of power for about 2-3 seconds.. then the power kicks back in and it runs fine the rest of the day. Any opinions/ideas regarding what might be causing this would be appreciated. Thanks! Nate have you tried puting in some sea foam in your gas? whens the last time you done a une up??  SignatureScrapper http://www.automotiveforums.com On May 29, 5:01 pm, Scrapper <Scrapper.2rd...@no-mx.nodomain.com> wrote: > have you tried puting in some sea foam in your gas? > whens the last time you done a une up?? [quoted text clipped - 6 lines] > > http://www.automotiveforums.com just added fuel system cleaner but no sea foam specifically. i'm not sure when the last tuneup was performed.. just purchased the jeep 3 weeks ago. do you suggest changing plugs, wires, etc..? > 1997 Jeep Wrangler SE > 4 cyl, 2.5L, 5 spd, 87K miles [quoted text clipped - 9 lines] > > Nate If it has a cap and rotor I would start there, then I would check the plugs out. One check for leaky wires is to spray mist the plug wires with water in the dark to see if you get a light show. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pictures.html?id=2115147590 (More Off Road album links at bottom of the view page) Changed out the plugs, wires, cap, & rotor. Still have the problem on occasion. When I first purchased the vehicle, I swapped out the air filter with a fram air filter. I wouldn't think this would cause the problem, but I don't recall having the problem before I changed the air filter. Unfortunately, I just thought of it now.. thoughts? The air filter looks clean. Nate > > 1997 Jeep Wrangler SE > > 4 cyl, 2.5L, 5 spd, 87K miles [quoted text clipped - 22 lines] > Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590 > (More Off Road album links at bottom of the view page) I would take some spray electronic contact cleaner and open and spray down the connection on the throttle body. There is an idle control and a throttle position sensor there that can and do get dirty connections and can cause strange cold running issues first, then get worse. There is also a CPS on the top drivers side bell housing that also can get a dirty connection, but that one, when dirty usually causes stalls. Mike > Changed out the plugs, wires, cap, & rotor. Still have the problem on > occasion. When I first purchased the vehicle, I swapped out the air [quoted text clipped - 27 lines] >> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590 >> (More Off Road album links at bottom of the view page) Will do that. Thanks for the tip. I'll follow up here if it fixes the problem. > I would take some spray electronic contact cleaner and open and spray > down the connection on the throttle body. There is an idle control and [quoted text clipped - 37 lines] > >> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590 > >> (More Off Road album links at bottom of the view page) followed your advice. seemed to run fine for a while but today when I took it out, i started off it lost most of it's power, knocked 3 or 4 times, then we were good to go again. drove fine the rest of the trip. i think this is the first time i have ever heard knocking... > Will do that. Thanks for the tip. I'll follow up here if it fixes > the problem. [quoted text clipped - 40 lines] > > >> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590 > > >> (More Off Road album links at bottom of the view page) maybe i shouldn't have said "knock".. maybe it was a misfire... sound was like boom boom boom..then it started running ok again when i got off then gas waiting a second or two, then accelerated again. > followed your advice. seemed to run fine for a while but today when I > took it out, i started off it lost most of it's power, knocked 3 or 4 [quoted text clipped - 45 lines] > > > >> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590 > > > >> (More Off Road album links at bottom of the view page) The fact it changes after a simple connection clean implies maybe more sensors also need a clean or maybe a different cleaning solution is needed to me. Mike > followed your advice. seemed to run fine for a while but today when I > took it out, i started off it lost most of it's power, knocked 3 or 4 [quoted text clipped - 38 lines] >>>>> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590 >>>>> (More Off Road album links at bottom of the view page) Sounds like fuel problem to me have you check your fuel filter? > Sounds like fuel problem to me have you check your fuel filter? Not many folks want to drop the fuel tank and replace the pump and filter unit just for a wild guess that doesn't match the symptoms. Bad fuel pump filter mean no top end normally..... Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's - Gone to the rust pile... Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pictures.html?id=2115147590 (More Off Road album links at bottom of the view page) It was not a guess I have a old mercedes I been working on for the last few years and it use to take 30 secs to a 1 minute before it will fully start up and the problem was the fuel filter and it starts right up and it has a lot more power I did not know the fuel filter was in that bad of shape. Sorry if I gave any of you the wrong idea Thanks Jamie It's my understanding that the 97 wranglers have the filter built into the fuel tank.. so yea, it would be a bigger undertaking than usual to swap out the filter on the jeep.. otherwise I probably would do that. Hey Larry.. that is exactly what I do to quickly fix the issue.. otherwise i just wait about 5 seconds and things clear up and i'm ok. If you have been working on this for at least 5 yrs.. I'm not too confident that I will fix the issue now.. darn. I'll keep trying things and post if I do find out something. What do you guys think about a bad (or going bad) oxygen sensor? How about a bad fuel pump? I wouldn't know how to test either one..probably would have to take it in. Thanks, Nate > It was not a guess I have a old mercedes I been working on for the > last few years and it use to take 30 secs to a 1 minute before it will > fully start up and the problem was the fuel filter and it starts right > up and it has a lot more power I did not know the fuel filter was in > that bad of shape. Sorry if I gave any of you the wrong idea Thanks > Jamie Do you think there is a TSB out on this.. i know I have heard of the same problem from quite a few people. No solutions yet though. > It was not a guess I have a old mercedes I been working on for the > last few years and it use to take 30 secs to a 1 minute before it will > fully start up and the problem was the fuel filter and it starts right > up and it has a lot more power I did not know the fuel filter was in > that bad of shape. Sorry if I gave any of you the wrong idea Thanks > Jamie > 1997 Jeep Wrangler SE > 4 cyl, 2.5L, 5 spd, 87K miles [quoted text clipped - 9 lines] > > Nate Hi Nate.... I have had the same issue with my 97 TJ with the 4.0. It comes and goes and I've never found the problem yet. The quick work around on my TJ has been to put the clutch in ... rev the engine a bit and you are good to go for the day. No real help I realize but it gets around the issue. I've been looking for the problem for over 5 yrs. Good luck!! Larry Hey did you ever fixed this problem? Signaturemigilin http://www.automotiveforums.com nope, not yet! > Hey did you ever fixed this problem? > [quoted text clipped - 5 lines] > > http://www.automotiveforums.com You you could always take your Jeep in to a shop. That is what I had to do when the death wobble got to bad even for me. That has to bad to. 99 wrangler TJ 2.5 lift 31 inch Good year MTR tires and a ton of lights Warn M8000 winch and more toys to come. Some people have an addiction to drink... Some people have an addiction to drugs.... I just have an addiction to Jeeps and their accessories.... |
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