'95 Cherokee Runs for a few minutes then dies. Tried everything...seemingly - JeepForum.com
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Unread 05-04-2012, 04:35 PM   #1
Registered User
1991 XJ Cherokee 
Join Date: Jul 2009
Location: Mililani Mauka, HI
Posts: 14
'95 Cherokee Runs for a few minutes then dies. Tried everything...seemingly

I've been fighting with this Jeep on and off for over a year now. Bought it for $200 (not running) gave it a tune up and new fuel pump and got a couple thousand miles out of it before it started having problems again. It is a 1995 Cherokee Sport, 2WD, Auto (bought as daily) with only 120k on it. When it runs, the engine in very strong and quick.

It would have issues where, once hot, it would begin to sputter, backfire and not react to throttle input by bogging down and quickly dying - just to restart almost right away after. This problem would seemingly be gone once it cooled down and would drive fine for a while longer.

It now will only run for a minute or two before dying. It will do this over and over, back to back.


- Bogging, sputtering, backfiring (when it would actually drive)
- Starts fine but will die within a couple minutes
- Will restart directly after and continue doing so over and over
- Have never had a no start (except when I forgot to reconnect fuel pump harness after testing, haha)
- Idles high - 1100rpm constantly
- After running for a minute, will start to run rough
- No fuel pressure (gauge works) - maybe 1 or 2 psi
Seems like there is a quick spike in pressure at ignition for < one second
- Tailpipe lightly spits water while running - spits more 10secs or so before engine dies.
- Exhaust tip has heavy carbon buildup - may be normal, not sure


IAC - Swapped w/ running Jeep (Cleaned connections and TB)
TPS - New
02 - New
FPR - Swapped 2 or 3 used in and out
Plugs - New
Rotor - New
Coil - New
Wires - New
Battery - New
+ Terminal - New
Fuel Filter - New 2x
Fuel Pump - New 2x
Fuel Rail w injectors - Swapped from running Jeep
Air Filter - New
Auto Shut Down Relay - New
Fuel Pump Relay - New


Spark - All plugs produce spark

Air - Has air - no blockage to TB - run w/ box removed to TB

Fuel - Starting from Pump: Replaced pump twice w/ filter. Blew compressed air through Out line from tank to fuel rail. Sprayed and soaked WD40 in line to help clean any blockage. At connector near fuel filter, I measured 132ohms and .5ohms on large and small ground, respectively, with the key out. 11.87V and 4.3V on large and small ground w/ key in "on" position. Swapped FPR and fuel rail (w/ injectors) from another running Jeep.
Injectors - (1) 15.0ohms, (2) 15.3ohms, (3) 14.9ohms, (4) 14.9ohms, (5) 14.9ohms, (6) 14.9ohms

Compression - Dry (1) 144, (2) 140, (3) 142, (4) 142, (5) 146, (6) 150

This is all I can think of. Please help! :-)

Last edited by mtbikemarc; 05-04-2012 at 05:28 PM..
mtbikemarc is offline   Reply With Quote
Unread 05-04-2012, 09:29 PM   #2
Registered User
1996 XJ Cherokee 
Join Date: Jan 2008
Location: Queens, New York
Posts: 677
your fuel pressure needs to be at 32 psi. 1 or 2 psi just wont do it. all your other numbers sound good.
blue96jeep is offline   Reply With Quote

dies , fuel pressure , fuel pressure regulator , fuel pump , high idle
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