I have a 1993 Jeep Cherokee 4.0 litre 2WD. Sorry about the long post, but I wanted to be detailed in the problem and what I have already done. I am having the following trouble:
Engine starts fine. It runs fine for a while. While driving on the highway at about 65 mph for around 10 minutes, the jeep will sometimes buck. It doesn't feel like its losing any power, but it may be. It will only do a little buck for about a second, then it will seem fine. It will buck again a few times during the next 10 minutes or so.
When I decelerate to get off the highway it loses power. If I press the gas, sometimes it will buck and go, sometimes it will stall. Today it did it again, but did not stall right away. I stopped to pay the toll and when I took my foot off the brake to go forward, it stalled.
When I try to start it, it turns over, but won't start. I checked the fuel rail and pressed the valve, and gas spurted out, so I feel there is fuel being delivered.
After about 5-10 minutes I can start the jeep and it will run fine for the remainder of the trip to work (about 5-10 minutes at 45mph city driving). At no time does the temp gauge show the jeep is overheating. It moves from 100 to 200 during the drive, so I feel the guage is working.
The check engine light has come one and gave a code reading of 12, 22 and 55. 12 I believe is the battery had been changed less then 50 starts ago. 22 I believe is the temperature sensor (which I replaced after getting the code, but I cannot seem to reset the check engine light). 55, which I was told is the test completed.
So now I need help from anyone who might have any ideas what is causing this. I really appreciate your assistance.
Tuesday, December 4th, 2018 AT 6:00 PM