So recently I have been having issues with my 2004 Jeep Grand Cherokee and it seems as if it has something to do with the transmission. About 4 months ago, i was merging onto the freeway and once it hit 60mph, it began to have issues. First it dropped the gear, and kept slipping in and out of gear and shortly after stalled dead on the freeway.
I restarted it and then once again got it up to 60mph and it stalled again, not restarting so i had it towed into the shop.
Shop took it out and discovered it was the crankshaft position sensor. This was replaced and the problem seemed to go away....until today. On the way home from work (about 30mins away freeway) it started to slip again, and could not stay in gear. This time it was when I was going 55mph, however it did not stall. I decided to drive it home anyways. I also noticed once stopped at a light, when i take my foot off the brake, it lurches forward about 3 feet before stopping.
I am not sure what the issue might be, possibly transmission? Anyone else have these issues?
4.0L I6 96,xxx miles.
transmission belts adjusted 4 months ago, at sign of initial problem.