Idle problem. Gets really shaky after warming up.
#1
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Location: Texas
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Year: 1993
Model: Cherokee
Engine: 4.0 I6
Idle problem. Gets really shaky after warming up.
Ok, so I have this problem. My idle drops after warming up and everything gets really shaky when it drops. It starts fine, and idles fine. But after driving it around, parking it, it starts to drop to around 600. It normally idles right at 1000. It kinda acts like it's going to die, but then saves itself. And when I say shaky, I mean the engine is shaking. I can feel it in my AX15. The shaking carries through about 2000 rpm, after that it seems to level out.
Also the same day I had a problem with this, I had trouble getting gas. I was almost empty, but when I tried to fill it up, the pump clicked as if it was full. I managed to get in a gallon and drove home. Yesterday I filled up just fine.
I've read things about this possibly being the o2 sensor? Possibly fuel pump? Not too sure about this one.
Also the same day I had a problem with this, I had trouble getting gas. I was almost empty, but when I tried to fill it up, the pump clicked as if it was full. I managed to get in a gallon and drove home. Yesterday I filled up just fine.
I've read things about this possibly being the o2 sensor? Possibly fuel pump? Not too sure about this one.
#2
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Ok, so I have this problem. My idle drops after warming up and everything gets really shaky when it drops. It starts fine, and idles fine. But after driving it around, parking it, it starts to drop to around 600. It normally idles right at 1000. It kinda acts like it's going to die, but then saves itself. And when I say shaky, I mean the engine is shaking. I can feel it in my AX15. The shaking carries through about 2000 rpm, after that it seems to level out.
Also the same day I had a problem with this, I had trouble getting gas. I was almost empty, but when I tried to fill it up, the pump clicked as if it was full. I managed to get in a gallon and drove home. Yesterday I filled up just fine.
I've read things about this possibly being the o2 sensor? Possibly fuel pump? Not too sure about this one.
Also the same day I had a problem with this, I had trouble getting gas. I was almost empty, but when I tried to fill it up, the pump clicked as if it was full. I managed to get in a gallon and drove home. Yesterday I filled up just fine.
I've read things about this possibly being the o2 sensor? Possibly fuel pump? Not too sure about this one.
there's a Idle Air Solienoid in the side of the throttle body... pull it out, clean it up with some carb cleaner and a rag, and reinstall.. (hopefully this can help)
#3
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Year: 1997
Model: Cherokee
Engine: 4.0
Yup - this cured mine which had the same symptoms. Just be careful with that pintle when cleaning!
#6
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Year: 2001
Model: Cherokee
Engine: 4.0L
Possible causes:
Clogged air filter
Dirty throttle body
Dirty IAC valve
Dirty IAT sensor
Clogged fuel injector
Corroded electrical connections
Corroded ground wire connections
Bad spark plugs
Dirty points in distributor
Cracked spark plug wires
O2 sensor/s
Vacuum leak
That's just off the top of my head, not an all inclusive list per say. But some things to check out for sure.
Clogged air filter
Dirty throttle body
Dirty IAC valve
Dirty IAT sensor
Clogged fuel injector
Corroded electrical connections
Corroded ground wire connections
Bad spark plugs
Dirty points in distributor
Cracked spark plug wires
O2 sensor/s
Vacuum leak
That's just off the top of my head, not an all inclusive list per say. But some things to check out for sure.
Last edited by ss427ci; 03-22-2013 at 03:18 PM.
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