Jeep dies without applying throttle
11-06-2013, 12:09 PM
#1
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Year: 1996
Model: Cherokee
Engine: 4.0
Jeep dies without applying throttle
Just went to start my jeep at work to drive to a job site and it wouldn't start. It started when I gave it gas, but died immediately. I started it again by giving it gas, and it remains running if I keep giving it gas, but dies immediately without it.
What should I check? Nothing looked like it was disconnected at first glance.
Random things I should mention:
-It was power washed on Sunday - sat until this morning when I drove it to work without issue
-It's parked at an angle up on a curb so I can get under it if I need to.
What should I check? Nothing looked like it was disconnected at first glance.
Random things I should mention:
-It was power washed on Sunday - sat until this morning when I drove it to work without issue
-It's parked at an angle up on a curb so I can get under it if I need to.
11-06-2013, 12:19 PM
#2
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Year: 1999
Model: Cherokee
Engine: 4.0l
My 99 did the same thing. I took out my IAC sensor and cleaned it really well. Try that, it fixed my problem. Here's a "how-to" link:
11-06-2013, 01:30 PM
#3
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Year: 1996
Model: Cherokee
Engine: 4.0
Pulled and cleaned the IAC with a paper towel - don't have any carb cleaner on hand. The metallic part was pretty dirty but that didn't have any effect.
Someone on another forum suggested the TPS could have been damaged by power washing the engine. Just pulled it and I don't really see a way water would get in, but does this sound like a possible cause? NAPA has a TPS for $40.
Someone on another forum suggested the TPS could have been damaged by power washing the engine. Just pulled it and I don't really see a way water would get in, but does this sound like a possible cause? NAPA has a TPS for $40.
11-06-2013, 02:07 PM
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Year: 1996
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Engine: 4.0
No go with the TPS... installed a new one and I still have the same issue. I'll try cleaning the IAC with TB cleaner.
11-06-2013, 02:10 PM
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Year: 1996
Model: Cherokee
Engine: 4.0L
Crankshaft Position Sensor.
Common problem. had the same issue on mine and a new CPS fixed it. Might be good to check your o2 sensors as well.
Common problem. had the same issue on mine and a new CPS fixed it. Might be good to check your o2 sensors as well.
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11-06-2013, 06:02 PM
#8
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Year: 1996
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It was the IAC. The shaft (and mushroom tip... lol) actually fell out whenever I was cleaning it. I had put it back together, but the AAA guy who came to test my battery and alternator said it was hosed if it fell apart while cleaning. Pulled the IAC and turned the ignition to on to test to see if the motor would activate and the valve didn't move. Replaced the IAC and the Jeep lives.
Good call on the IAC.
Good call on the IAC.
11-06-2013, 06:17 PM
#9
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Year: 2001
Model: Cherokee
Engine: 4.0
Mine started doing that....among other things, I cleaned the throttle body and it's running great now. My throttle body was all gunked up.
11-07-2013, 09:11 AM
#12
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Year: 1999
Model: Cherokee
Engine: 4.0l
It was the IAC. The shaft (and mushroom tip... lol) actually fell out whenever I was cleaning it. I had put it back together, but the AAA guy who came to test my battery and alternator said it was hosed if it fell apart while cleaning. Pulled the IAC and turned the ignition to on to test to see if the motor would activate and the valve didn't move. Replaced the IAC and the Jeep lives. Good call on the IAC.
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