why does my 2010 Kia Rio L S, accelerate when I hit the brakes? It has done this either when backing out of my driveway or when shopping at lights. I hit the brakes and the car accelerates.

Asked by Jan 05, 2016 at 07:18 PM about the 2010 Kia Rio LX

Question type: Maintenance & Repair

I was being out of my driveway,u hit the brakes and my car accelerated with
the engine revving up.I had to put it in neutral and pull the emergency brake

1 Answer

23,150

Check the brake booster check valve. If this valve is bad will allow air from brake booster to be pushed back into engine when brakes are applied

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