View Full Version : Jeep Bucks on after start-up
07-15-04, 05:11 PM
First i want to say hi, and that I love my jeep. It is a 98 grand cherokee laredo, with 62,000k. Here is my problem, when I start my truck in the morning I get a very rough idle, then if I give it gas in gear it will buck and pop, then go, then buck again. Then it will go away in about 2 minutes, and will not do it again unless the truck sits a while. I have new plugs and wires, new distrubuter, and cap. I then brought to jeep and 1200.00 dollars later they replaced both o2 sensors, cleaned and replaced thottle body seal, then new fuel pump, and new fuel pressure regulator. I need help!!!!!!!!!!!!
07-15-04, 09:36 PM
Tarrytown, is that someplace where you might have condensation and subsequently water in your gas tank? Try HEET methanol to turn the water into something mildly more flammable?
07-16-04, 08:01 PM
Tarrytown is in New York, and I have tried both dry gas, and fuel injector cleaner.
07-23-04, 11:57 AM
Could be the crank position sensor? Have you tried that yet? How about timing?
07-23-04, 12:12 PM
I had a problem on my 88 Xj similar to that. The CPS had a bad connection and it was sending a bad siginal to the computer. I unplugged and pluged back in the connector a couple times and it fixed it. I dont know if thats the same as your problem, but it might help. I'd also check the TPS
07-24-04, 07:24 AM
the truck is back at the dealer. I told them I will not pay anything more, and dont want it back untill it is fixed. I asked about the CPS, and the tech told me it would throw a code, and my jeep is not.
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