I have a 2004 Grand Cherokee and the engine was cutting out and coming back when driving., the gauges were all going crazy. No check engine lights came on on the dash. Had to have it towed and the mechanic couldn't get it to do this then it did, but still no codes. He then took it to a Jeep dealer and they can't find anything so they are giving it back to me. Like I want something I know is going to screw up again. About 2 months ago we had a simliar problem and they replaced the crankshaft sensor. Any ideas??

I have a 2004 JGC that began lurching and guages bouncing all over the place only at high speeds of 60 or more about 3 months ago. Initally the dealer replaced a deteriorated battery cable, reset the computer, and put in new voltage sensors. Problem came back, They then replaced the PCM (luckily under the emissions warranty,) Problem came back and now the truck dies after going a few miles. Dealer has now had it 3 weeks and still can't figure out the problem also they are not getting any help from Jeep manufacturer. Dealer has since put in a new battery, new transmission sensor and still can't get it to go for more than a few miles without dying. Each time it quits it wipes the computer clean. All in all I have almost $2K into chasing this problem. So far the dealer is not charging me for diagnostics only parts. But still the trade in on this thing is only $6K or so. I have a 2004 JGC that began lurching and guages bouncing all over the place only at high speeds of 60 or more about 3 months ago. Initally the dealer replaced a deteriorated battery cable, reset the computer, and put in new voltage sensors. Problem came back, They then replaced the PCM (luckily under the emissions warranty,) Problem came back and now the truck dies after going a few miles. Dealer has now had it 3 weeks and still can't figure out the problem also they are not getting any help from Jeep manufacturer. Dealer has since put in a new battery, new transmission sensor and still can't get it to go for more than a few miles without dying. Each time it quits it wipes the computer clean. All in all I have almost $2K into chasing this problem. So far the dealer is not charging me for diagnostics only parts. But still the trade in on this thing is only $6K or so.