2004 Chevy Monte Carlo engine shuts off by itself at times,

2004 CHEVROLET MONTE CARLO

43,000 MILES • 6 CYL • FWD • AUTOMATIC

NASCARPAT

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3.8 v-6 supercarged engine,start engine cold after 4 mins it runs rough for a minute and sometimes dies with
smoke,restarts and is fine for awhile then driving for
10 mins or so it shuts itself off-has hard restart but then starts and is fine again.no codes whatsoever.changed
fuelfilter,tps sensor,fuel pump relay ,ign relay,coolant temp sensor.heard some where possible crankshaft sensor bad? anyone heard of this problem?any
suggestions?thanks

Jul 20, 2009 at 12:43 PM

TAKECHARGESARGE

CAR REPAIR CONTRIBUTOR
92 POSTS

Hi nascarpat,

Yes, as a matter of fact, I had the same engine stalling problem with my 2000 Chevy Impala LS,
3.8 ltr, V-6. It would stall when driving and have no indication, except the battery in the message center,
that anything had occurred. After about 10-15 minutes, I could start it and drive as if nothing had happened. The engine computer didn't even see it as a problem. NO CODES AT ALL.

I finally found a mechanic who was willing to work the problem until he fixed it. After about a week he called and told me my car was possessed. He called the following day to tell me the Crankshaft Position Sensor was defective. After it was replaced, the engine has not stalled again. (That was 3 years ago)

I'm pretty sure that the 3.8Ltr. V-6 wasn't changed much from 2000 to 2004. So I'd recommend that you replace the Sensor.

TakeChargeSarge

Aug 28, 2009 at 12:35 AM

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