Erratic Idle and Dimming of Lights - Saab 900 Bulletin Board - Saabnet.com
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Erratic Idle and Dimming of Lights
Posted by ToddF (more from ToddF) on Sun, 9 Dec 2018 16:20:49
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I have a 1991 SE Convertible that has been having issues with erratic idle control when driving around 30-40 mph on local roads; step on the brake and the idle goes way down to where the car almost dies, especially if the headlamps are on. Idle then recovers and swings way north of 2,000 rpm before settling down to 850. Replaced AIC today with new Bosch unit and the battery (two-years old) tested good.Problem still there.Car recently tuned up. Any ideas as to the problem? Bad main ground on the frame by radiator? All vacuum lines look good too.
Thanks!
posted by 73.215.16...
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