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Rough idle fixed!!! Pre-pump was the culprit 200

posted by  pittroj on  Sun Mar 29 12:33 CST 2009
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last visit: Mon Oct 20 07:18 CST 2014
[RELATED]


I have a few post running a few pages back on a rough idle I have been chasing. I searched the archives for many hours and tried most everything, and of course all the no brainer stuff first like plugs, cap, rotor, idle ICM, clean throttle body, etc, etc. Then,
I ran the test for the prepump and the main pump, and found the pre-pump was dead in the water. I replaced it today (my God, what a nightmare job without the IPD bung hole nut toll, I will NEVER do this job again without it.) and my idle is smooth as silk, and the main pump noise/hissing has stopped.

Yeah, I thought I ain't paying 24.00 for that stinkin tool, now I think otherwise.

If you are having an idle issue, jumper power from the left of fuse # 5,6,7,or8 to the right of fuse#4 (with fuse removed of course) and lister at the gas filler, or remove the access plate in the trunk and lister to see if you hear it running. If all is quiet, your pre-pump is DOA.

Thanks to everyone for all of the help with my idle.






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