1990 Chevy Lumina v6 3.1, mileage: 100,010. It labors badly after changing into drive and overdrive. I have no codes; my scanner showed incorrect volts at map and barometric sensor, the spark plugs are burning a touch rich. I used a vacuum pump on the map sensor, I didn't hear any change In the Rpms when I applied 20 inches of vacuum to it, but when I let the pressure off the Rpms did change.
have the same problem?
Tuesday, January 18th, 2011 AT 6:43 PM