imwoodhouse
NAXJA Forum User
- Location
- Des Moines, IA
Morning. Having trouble keeping my Jeep running.
1990 Cherokee 4.0 Auto
I can start it, but then it high idles then dies. If I gas it it dies immediately.
It cranks for a longer than normal time (while fuel pressure tester on it, the pressure slowly builds up), then finally fires, high idles then falls flat on its face. The fuel pressure plateaus at 15 PSI if I have the vacuum assist on or not. But as noted before, the fuel pressure builds, peaks and drops. I can keep it running with ether ( I know its bad to do but I wanted to make sure it was not another problem). Also if you can see from the pictures that the vacuum lines are a NIGHTMARE!!!! I got this Jeep from a kid that used it as a mud runner so most of everything non-essential was removed (including vacuum lines), which could be causing or adding to the problem. From what I have read so far that the starting then dying may be a vacuum problem. The fuel pressure tester booklet and my Haynes manual were less than helpful on how to hook the unit up so here are the pictures of how I did it. Let me know if I left something out. Thanks in advance!
http://s1232.photobucket.com/albums/ff363/imwoodhouse/
1990 Cherokee 4.0 Auto
I can start it, but then it high idles then dies. If I gas it it dies immediately.
It cranks for a longer than normal time (while fuel pressure tester on it, the pressure slowly builds up), then finally fires, high idles then falls flat on its face. The fuel pressure plateaus at 15 PSI if I have the vacuum assist on or not. But as noted before, the fuel pressure builds, peaks and drops. I can keep it running with ether ( I know its bad to do but I wanted to make sure it was not another problem). Also if you can see from the pictures that the vacuum lines are a NIGHTMARE!!!! I got this Jeep from a kid that used it as a mud runner so most of everything non-essential was removed (including vacuum lines), which could be causing or adding to the problem. From what I have read so far that the starting then dying may be a vacuum problem. The fuel pressure tester booklet and my Haynes manual were less than helpful on how to hook the unit up so here are the pictures of how I did it. Let me know if I left something out. Thanks in advance!
http://s1232.photobucket.com/albums/ff363/imwoodhouse/