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Old 05-03-2011, 09:18 PM   #3
ritchie lee
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Join Date: Apr 2011
Location: Westminster, Maryland
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Re: speed sensor p0502 no speedometor 1996 suburban

I'm still have an intermitent problem, works hot works cold, won't work cold won't work hot. Lately though the speedo has been more irratic, (a short somewhere?). Anyhow I have tested a new sensor, the terminals appear to be good. I tested the plug, and found the purple/white wire to be careing 4.75 volt, and a tiny bit gets through on the ohms scale when nothing is turned on. The green/black wire passed nothing ohms or volts whether on or off.
Maybe the grn/blk wire bad, this must go to the computer.
Oh and one more thing now I'm getting a P0500 code. Sometimes a P0500 & a P0502 I guess it depends on the moon or stars.
127,000 and no other recent codes.
Thanks for the help.

Last edited by ritchie lee; 05-03-2011 at 09:23 PM. Reason: more info
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