2002 Chevrolet Monte Carlo Stalls

2002 CHEVROLET MONTE CARLO
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NEWBORN
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Car has 90,000 miles, takes three to four times to start, cranks but doesn't turn over until a little help by taping the accererator.. Once running, the car runs fine until I slow down or go into a slow turn then the car stalls, starts right back up.. Only happened now and then, but it seems to be happing more and more... I've changed the fuel pump, fuel filter, air filter, pvc valve, plugs, wires and oil change... What else could it be?... Nothing shows up on the computer either!... Possible pressure senor?... :?
Aug 28, 2006 at 3:56 AM
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MIKEYBDMAN
  • ✓Experienced Mechanic
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[quote:e424739fa8="newborn"]Car has 90,000 miles, takes three to four times to start, cranks but doesn't turn over until a little help by taping the accererator.. Once running, the car runs fine until I slow down or go into a slow turn then the car stalls, starts right back up.. Only happened now and then, but it seems to be happing more and more... I've changed the fuel pump, fuel filter, air filter, pvc valve, plugs, wires and oil change... What else could it be?... Nothing shows up on the computer either!... Possible pressure senor?... :?[/quote:e424739fa8]

I would start off by testing the fuel pressure system. This include pump, regulator, and injectors. Other things could be dirty throttle body, crankcase vent, and EGR system.
Aug 28, 2006 at 7:23 AM
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TOP_NOTCH
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I have the exact same problem on my 2002 MC SS.

I replaced the IAC and cleaned the throttle body and throttle bore. It helped, but did not cure my problem.

Just tonight I pulled the vacuum tube from the fuel pressure regulator and it is leaking. I suspect you have the same problem. I will try to swap it out tomorrow and think this should end my problem.
Feb 7, 2007 at 1:52 PM
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TOP_NOTCH
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Just as a follow up, a new regulator fixed all the problems I had including stalling @ idle, on decel, and difficult starting.
Feb 9, 2007 at 6:47 AM
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Suggested Repair

Test the fuel pressure system, including the pump, regulator, and injectors. Inspect the fuel pressure regulator for a vacuum leak and replace it if leaking. Also check for a dirty throttle body, crankcase ventilation issues, and EGR problems; cleaning the throttle body and replacing the IAC may help but may not fully fix it.

Conversation Summary

A 2002 Chevrolet Monte Carlo with 90,000 miles was hard to start and stalled when slowing or turning, then restarted. The fuel pump, filter, air filter, PCV valve, plugs, wires, and oil had already been replaced, with no computer codes. An expert recommended testing fuel pressure at the pump, regulator, and injectors, and checking the throttle body, crankcase vent, and EGR. Another owner with the same symptoms found a leaking fuel pressure regulator; replacing it fixed hard starting and stalling after throttle-body cleaning and an IAC replacement had only helped.

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