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Diagnostic jump won't retard timing

Old 10-24-2007, 07:17 PM
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Question Diagnostic jump won't retard timing

Ok I just rebuilt my 22re in my 87 4r. My issue is that when I jump the terminals E1 to T to set my timing it doesn't retard the timing. So I can't set it to 5deg BDC with the jumper. It makes no difference in the timing whether it is jumped or not.
I've checked the routing of all my vaccuum lines and electrical connections several times and cannot find anything out of place.
Any ideas would be appreciated.
So what am I missing??

Thanks
Old 10-24-2007, 07:19 PM
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Originally Posted by poolmarty
Ok I just rebuilt my 22re in my 87 4r. My issue is that when I jump the terminals E1 to T to set my timing it doesn't retard the timing. So I can't set it to 5deg BDC with the jumper. It makes no difference in the timing whether it is jumped or not.
I've checked the routing of all my vaccuum lines and electrical connections several times and cannot find anything out of place.
Any ideas would be appreciated.
So what am I missing??

Thanks
Throttle Position Sensor IDLe adjustment is likely off:
- http://www.4crawler.com/4x4/CheapTri...roubleshooting

Symptoms of a bad or mis-adjusted TPS include:
Inability to correctly set base ignition timing
i.e. you jumper the timing check connector and the idle and timing don't change
Old 10-24-2007, 07:23 PM
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Tps...Yea I didn't check that since I didn't disturb it. I'll check that 1st chance tomorrow.
Thanks for the fast reply.

That was the problem
Thanks again

Last edited by poolmarty; 10-25-2007 at 03:31 PM. Reason: update post
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