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Old 01-03-2012, 06:42 PM   #8
djunkie
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Join Date: May 2011
Location: Lomita. Ca.
Posts: 127
Re: 1987 (Vss)Vehicle Speed Sensor location

Quote:
Originally Posted by chris989 View Post
What was the outcome of your speed sensor issue?

I have a 89 and i feel mine is affecting my timing but i never get any codes.

If i put my truck in neutral while drifting even at 5mph my idle increases to 1500 rpm.
Mine ended up being the speedo cable adapter at the trans. I removed it then went to a speedo shop to have the gear changed in the trans to calibrate it. Been fine ever since.
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