Re: slight shaking when idling
Key to listen for is a buzzing or humming from under the car once you have turned it off.
For all of your ideling problems just remember the word TIPM. It starts with the ideal and ends with you not being able to crank the car. It is actually your fuel pump shorting out. There's a lot of threats on that and jeep is issued a recall for that computer system. Jeep will not touch your car when he comes to recall until it just stops running altogether. In my case my wife was driving and it died on the interstate at 70 miles an hour. That was before the recall and I got rid of the car due to the $1200 price tag and no guarantee of it being fixed due to them not upgrading the system even though they know it has an issue.