Three problems related to check engine light on have been reported for the 2002 Jeep Grand Cherokee. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2002 Jeep Grand Cherokee based on all problems reported for the 2002 Grand Cherokee.
Was driving and all of a sudden the air bag light and check engine light came on. Now they wont go off. Check engine light has been hooked up to computer but all it says is that there's an emissions leak but no one can find it. The air bag light wont go off.
On Sunday August 20 I noticed that my vehicle was shaking at certain speeds. On Monday August 21 I took my vehicle to a mechanic who diagnosed that we needed new spark plugs. The spark plugs were replaced. On Tuesday August 22 when I was leaving with my vehicle it was still shaking and the check engine light was on. The mechanic diagnosed the problem as a bad 02 sensor. On Wednesday August 23 he called and told me that the O2 sensor was not the problem and that I needed to take it to the dealership. On Thursday August 24 I took my vehicle into the dealership. They told us that they couldn't figure out what the problem was and that they were going to have to take the engine apart. They called me on Friday August 25 and said that they were going to have to replace the camshaft and lifters because of "carbon build up". When asked what caused the build up the mechanic said that he did not know. When asked if this was a common problem with Jeeps the mechanic said yes.
My wife & I were driving on I-95 south when my Jeep Grand Cherokee's check engine light came on but before we could do anything it shifted from drive to 2nd gear and went from 60mph to around 25mph while we were still in the 3rd inside lane of a 3 lane hwy so we proceded to pull off the hwy and check out the truck and also let it sit for awhile and in doing so the lite went off so we proceded to get back on and go straight home but as we tried to get on the hwy it happened again but this time we went from drive to 1st gear and we almost got rearended by an 18 wheeler but he moved over at the last second, where we got on there was no break down lane so we had to go for about a mile and in the process we started to loose the brakes do to problems ariseing from the abs and also the engine was acting funny it started to shut off then it would speed up and it did it 3 or 4 times so when we got off we had the Jeep flatbeded to "greenwich Jeep" in greenwich,CT. Soon as it's fixed I'm getting rid of it but I did want to note the problem with you!.