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DOES THE ECM HAVING PROBLEMS CAUSE THE TACH AND ...
1990 Pontiac Grand Prix
January, 2, 2013 AT 1:22 AM
Does the ecm having problems cause the tach and speedometer to read twice as high and make the car rev and stall when warm and restarted.
FOUND 909 RELATED QUESTIONS
Rpm Guage Fluttering At Constant Rpm
Rev Counter And Fan
January, 2, 2013 AT 1:23 AM
Yes, try tapping on it while running and it may faulter. Common failure
January, 2, 2013 AT 1:33 AM
Thank you. We have changed so many things trying to find problem. The only thing we have not changed is the map sensor.
January, 2, 2013 AT 1:34 AM
Do not get a used one the new ones are about 100 bucks
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