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Regina problems 700 1990

posted by  Sumerduckman on  Wed Jan 18 01:41 CST 2006
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last visit: Tue Aug 21 11:31 CST 2007
[RELATED]

What are the code number/s being set? Pull the number/s ( check for more than one code ,as per the 700/900 faq), then clear the memory, start the car and let it run a few minutes, shut off then check for codes again.
Off the top of my head, I would say that you somehow lost O2 signal ground when the head pipe was replaced.
You can check that if you have a DVOM. Check for continuity between O2 sensor base ( with signal plug from o2 sensor to ECU disconnected), and the ECU ground connection at the intake manifold.
--
Gary Gilliam Sumerduck VA, '94 940 Regina 165k '86 240 195k, 93 Camry 4cyl 5spd 245k






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