Engine Performance problem
2003 Chevy Venture 6 cyl Front Wheel Drive Automatic 75000 miles
Was under the hood today with the car on and when I pull up a medium amount on the accelerator I hear two distinct phases:
Phase 1. Sounds like a vacuum hose being plugged up - if you can imagine you hear a sucking sound and then the sound of it being plugged up by putting your finger over it. Also during this phase, the engine sounds like it simply cuts out. This process lasts about 1/2 second.
Phase 2. The engine revvs up normally.
What I would expect to happen is simply phase 2 without phase 1.
My question is what could that phase 1 process be? Is that simply the sound of the engine cutting out momentarily, or does this convey information about the part that is malfunctioning - causing the car to hesitate when I accelerate from idle?
have the same problem?
Monday, May 25th, 2009 AT 8:25 AM