Question about 1991 Isuzu Pickup
Have a 1990 buick with 8oooo miles car wouldnt start replaced ecm ran a couple weeks check engine lite came on, trouble code low/high volts on tps. replaced tps now have low volts code and very high idle have tried to rotate tps but volts dropped to.4 engine requires .5 + - .005. idle rpm slows with rotation of tps, have also disconected battery trouble code still appears
Replace ignition coil make sure by dealer the right mode is used when ordering if not ordered right you will get a difference in engine volts
Posted on Jun 07, 2008
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Posted on Jan 02, 2017
Tips for a great answer:
Aug 06, 2014 | 1992 Chevrolet Camaro
Aug 31, 2013 | 1990 Buick Century
Oct 25, 2012 | 1993 Buick Skylark
1) Maladjusted TPS
2) Defective TPS
3) No +5 volt reference to TPS
4) TPS-return to ECM is shorted to ground or to sensor ground
5) Defective ECM
Good luck, i hope this helps.
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