View Full Version : Vacuum problem

10-28-2008, 02:04 PM
My SC is not idling properly. It usually carries about 15 to 20 inches of vacuum at idle but now will run as low as 5. The A/F ratio guage says lean and the blower bypass valve is oscillating causing a rump rump idle.
When I apply just the slightest accelerator pressure it will climb slightly.
Running along it doesn't want to slow down on its own and will seem to fight braking when coming up to a stoplight. Vacuum leak or just too little gas in the mixture. Most of the time my A/F guage shows about 14.75 but will go to as high as 17/1 at light accellerator pressure.
It does enrichen properly when I stand on it and seems to run well at higher accellerator pedal pressure. She failed Cal smog test yesterday.
George Clarke aka the [email protected] 925-984-3785 cell

12-04-2009, 02:20 PM
old post, but interesting problem. any update?

12-04-2009, 02:28 PM
Mike I used to live on Surfrider Way... I miss San Diego...

12-04-2009, 02:53 PM
I've got a buddy up there. Says the skiing is to die for.