2003 Chevy Monte Carlo

2003 CHEVROLET MONTE CARLO
82,652 MILES • 6 CYL • FWD • AUTOMATIC
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TRUCKINMAN
  • MEMBER
  • 1 POST
My car falls flat on its face when I try to accelerate. It almost fells like it is starving for fuel but it is reading 50 psi at idle and over 60 psi while driving. If I acclerate slowly it picks up fine but if I mash the pedal it feels ilke it loses 3 cylinders. I just completed a complete tune-up and there is no change in its perfromance. What could it be?
Feb 9, 2008 at 12:25 PM
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M8TRIX01
  • MEMBER
  • 36 POSTS
It could be a coil pack going bad or it could be a Mas Air Flow Sensor, or a Throtle position sensor. Do you have a check engine light or anything?
Feb 9, 2008 at 1:00 PM
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2CARPRO JACK
  • CERTIFIED EXPERT
  • 11,533 POSTS
Try loosening the exhaust befoe the cat converter and driving it. Loud, but if the cat is bad it will run ok
Feb 10, 2008 at 8:02 AM
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