HELP won't stay running without gas

Kejtar · Aug 6, 2004

OK, would it be potentially related to the fact that the battery is really low or something else? I have swapped harnesses inside and one of the wires goes to the fuel pump. Now it ran fine before, but now unless I got one foot sitting on gas it drops RPM to 0 and dies.

BUCKYXJ · Aug 7, 2004

Kejtar said:
OK, would it be potentially related to the fact that the battery is really low or something else? I have swapped harnesses inside and one of the wires goes to the fuel pump. Now it ran fine before, but now unless I got one foot sitting on gas it drops RPM to 0 and dies.

well put some gas in the tank when the fuel is empty it wont run
DIG IT

but to answer your question it sound like it your TPS might need adjusted.

Kejtar · Aug 7, 2004

BUCKYXJ said:
but to answer your question it sound like it your TPS might need adjusted.

Hmmm it ran fine last week and I didn't drive it since then. Also I thought tps is nonadjustable

tchase · Aug 7, 2004

we ve had the exact same problem with our 91 , whenever we came to a stop it wouldnt idle. the tps is repaired by replacement. the iac motor is our problem. we ve helped it alot by cleaning the motor as well as the intake with throttle body cleaner.

jneary · Aug 7, 2004

what usually happens is the pcm loses the memory when the battery dies and has to relearn. if you keep your foot on the accelerator to keep it running and slowly lower the idle, it will eventually stabilize.

Kejtar · Aug 7, 2004

jneary said:
what usually happens is the pcm loses the memory when the battery dies and has to relearn. if you keep your foot on the accelerator to keep it running and slowly lower the idle, it will eventually stabilize.

Ahh..... I do have the battery unplugged most of the time while I"m working on various items. I hope that's it

Do you know how long does it take for it to relearn?

jneary · Aug 7, 2004

it depends, it can be a minute or two. just be patient and slowly let it slow down. it helps if the throttle body and iac motor pasages are cleaned though

Kejtar · Aug 7, 2004

jneary said:
it depends, it can be a minute or two. just be patient and slowly let it slow down. it helps if the throttle body and iac motor pasages are cleaned though

I cleaned them about 3 weks ago before getting it smogged so I'm good there..... I'll guess I'll play with it tomorrow again.

Cliff · Aug 7, 2004

same thing happend to mine when i repaced the battery cables took about 5 mins to stabalize had me a bit freeked.

old_man · Aug 7, 2004

This is the classic symptom of a faulty IAC. That is what actually sets the idle speed on the engine. Pull it and clean it and the throttle body where it mounts. Don't get anything on the TPS.

tchase · Aug 8, 2004

old_man said:
This is the classic symptom of a faulty IAC. That is what actually sets the idle speed on the engine. Pull it and clean it and the throttle body where it mounts. Don't get anything on the TPS.

exactly, that what we did it, we put up with weeks of stalling but after was like a different jeep.

Kejtar · Aug 8, 2004

Actually it turned out that the battery was too dead to keep the idle up! I charged the battery overnight and dropped it in next morning and it started fine.

Thanks for all the suggestions though.

HELP won't stay running without gas

Kejtar

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BUCKYXJ

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Kejtar

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tchase

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jneary

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Kejtar

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jneary

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Kejtar

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Cliff

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tchase

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