ras97XJ
NAXJA Forum User
- Location
- Houghton, MI
Okay, so I've search just about everything I can find regarding this issue, and I can't seem to find anything that matches my particular problem. Hoping you folks can help out.
I've got a 1997 XJ, 4.0, 5 speed, 168xxx miles. The only engine mods I've done include a new-style intake swap from a 2000 grand cherokee, rusty's air tube and cone filter, new fuel rail and injectors from said intake, and new cap/rotor/wires/plugs.
When I start the Jeep, there are some instances where it will fire, then sputter out and die. When I got to restart it, it will crank indefinitely unless I depress the gas pedal a little bit. At that point, it will stumble to life, but will only remain at idle if I keep the gas pressed. If I release the gas very slowly, I can usually get it to catch and hold idle by itself (after ~10 seconds of holding it at idle myself). At this point, it will idle just fine.
Now, once I start driving and then remove the load from the engine (such as clutching in coming up to a stop sign), the revs will drop WAY down, usually around 50-80, and the Jeep will usually stall out. Restarting procedure is the same as above, although usually takes a lot longer to get it to fire.
Once the Jeep is warmed up, this problem seems to go away. It only seems to be there when the Jeep is in a semi-warm state. I've tried unplugging the coolant temp sensor to bypass it to see if it's the problem, but this didn't fix it.
I've replaced the idle air controller in the last month, so that part is good. Any ideas what might be problem?
I've got a 1997 XJ, 4.0, 5 speed, 168xxx miles. The only engine mods I've done include a new-style intake swap from a 2000 grand cherokee, rusty's air tube and cone filter, new fuel rail and injectors from said intake, and new cap/rotor/wires/plugs.
When I start the Jeep, there are some instances where it will fire, then sputter out and die. When I got to restart it, it will crank indefinitely unless I depress the gas pedal a little bit. At that point, it will stumble to life, but will only remain at idle if I keep the gas pressed. If I release the gas very slowly, I can usually get it to catch and hold idle by itself (after ~10 seconds of holding it at idle myself). At this point, it will idle just fine.
Now, once I start driving and then remove the load from the engine (such as clutching in coming up to a stop sign), the revs will drop WAY down, usually around 50-80, and the Jeep will usually stall out. Restarting procedure is the same as above, although usually takes a lot longer to get it to fire.
Once the Jeep is warmed up, this problem seems to go away. It only seems to be there when the Jeep is in a semi-warm state. I've tried unplugging the coolant temp sensor to bypass it to see if it's the problem, but this didn't fix it.
I've replaced the idle air controller in the last month, so that part is good. Any ideas what might be problem?
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