my wife has a 01 sunfire gt auto with 40,000 KM
With the car is in gear, and the foot is on the brake (car stopped) once in a while the rpms drop a tad then the car wants to surge forward......sometimes the dash lights dim when it happens
any idea
thanks in advance
I dont know, i have the same issue.
Vacuum leak in the master cylinder.
just a shot in the dark tho, my old 79' cordoba 300 did that.
What is manifold vacuum? Should be between 18-20psi at idle. If it isnt you most likely have a vacuum leak.
- 2004 Cavalier - 124k, owned since new
I'm with Rob S....correct.
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you said manifold vacuum should be between 18 and 20 psi well if it's anything other than that or at some point other than that isn't the car going to just stall out entirely.
