Question about 2002 Jeep Wrangler

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Check Engine Light / Jarring

So, the check engine light comes on and goes off at random. Generally, when it comes on, the car stutters pretty hard and it will continue to do this intermittently. Then, the light will go off. This can range from hours to days. It's been like this for months and we hadn't put any effort into diagnosis/repair but inspection time is around the corner. It seems to act up more in the cold but it's hard to say really. I haven't checked the codes yet but I was wondering if anyone had seen this sort of issue before on these. It's a 02' Jeep Wrangler Sport with approximately 85k miles.

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It probably needs spark plugs. with that mileage and if they havent been done it is very likely. the are 30k mile plugs. it may also be injectors clogging up which will need injector cleaner. when you remove the coil pack off the plugs, be very careful that piece is like $500.

Posted on Feb 12, 2009

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The next day, the car wouldn't come on at all. It sounded as the battery was dead. I couldn't even jump start the car. So, I got a new battery from Costco ($59) and put it in. It took 15-20 seconds of cranking to get the car started. Once it was started, the engine sounded fine and the RPM normal. The "Check Engine" light was off. However, the "Trac Off" was still on. I cleaned the gas tank cap one more time.

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