Question about 1993 Jeep Grand Cherokee
We had our jeep in the shop 4 months ago and they replaced the dist.cap and rotor, and gasket and checked the spark plugs. We drove it on the freeway home and it was still shaking occasionally when holding a constant speed between 65 and 75mph (more like a hiccup/jolt). We were told to just ignore it because the car doesn't recognize that it has a problem yet. Now after driving it for 3 hours on the freeway this week it no longer does that but now it runs heavy, it shimmies at idle and when accelerating. what could it be and can we fix it ourselves?
I don't know if you can fix it because you don't know what "it" is yet!!! It is my opinion that any shop that would release a vehicle without verification that a problem had been repaired is not worth returning to. To do any testing, you will need d decent digital volt/ohmeter and a manual to guide you through tests. Most larger parts stores do scan tests free and also carry either haynes or chilton vehicle specific manuals. If you have a specific question, I may be able to help you.
Posted on Jul 18, 2009
Also check your pcv valve and the hose that's on the valve( about a foot long) I had a small tear on the base of mine and it caused just enough of a vacuum leak to shake at idle
Posted on Feb 29, 2012
You need to have the ignition secondary output checked, even if the spark plugs look good they may not be. Also the ignition wires may have to be changed that is where the testing of the ignition comes into play. Also you have not mentioned if there is a check engine light on or if it works at all. Does the light come on when you turn your ignition key to the run position post starting RE: before you start or engaged the starter? You have stated runs heavy is this a loss of power?
Posted on Jul 18, 2009
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Posted on Jan 02, 2017
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