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2001 Pontiac Firebird Engine Stall

Tiny
TRIPPN
  • MEMBER
  • 2001 PONTIAC FIREBIRD
  • 3.8L
  • V6
  • RWD
  • AUTOMATIC
  • 85,000 MILES
I had a thermostat stuck open, so I replaced it. Now my car stalls while driving. Never at idle or when cold. The trouble codes I have indicate a bad fuel cap, and a bad O2 sensor. The car drives fantastic when it isn't stalled and it always restarts easily after a stall. The question is this, Can an O2 sensor malf cause this, or do I need to reset the ECM after the cooling problem? I really don't think it's a fuel pump at least I hope not. (Very expensive) Any thoughts or suggestions on this issue are appreciated.
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Sunday, April 13th, 2014 AT 4:55 PM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
You don't need to reset a n ecm after a tstat change only when engine light is on and when part is fixed most scanners can do that. Scan for codes an dcheck fuel pressure with a gauge for your stalling problem if that stuff is ok then clean throttle plate on both sides and iac hole with choke cleaner. Autoparts rent the gauge
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Thursday, April 17th, 2014 AT 1:19 PM

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