2001 Chevy Impala Engine stops without warning

Tiny
BLUEEAGLE65
  • MEMBER
  • 2001 CHEVROLET IMPALA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 122,000 MILES
My 2001 Chevy Impala LS w/ aprox 122K miles recently began to stop when I'm driving. No sputter or other warning - almost like switching the key off. It starts right back up after coming to a stop and putting it into Park. It has done it several times in the last week, however, not at the mechanic's where it spent Tuesday. I thought maybe bad gas and tried a gas additive, but that wasn't the solution. Hot, cold, idling, running - nothing in common to the problem. No check engine lights, etc. It doesn't matter if it is hot or cold, running or idling.

If this is a repost, I apologize - also had some minor computer problems (when it rains - it pours).
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Thursday, May 29th, 2008 AT 7:01 AM

6 Replies

Tiny
RHALL77
  • MEMBER
Did they scan the vehicle? Did they find any codes. Is it hard starting (a longer crank then normal) we you restart it?
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Thursday, May 29th, 2008 AT 7:20 AM
Tiny
BLUEEAGLE65
  • MEMBER
As far as I know they didn't scan. One tech told me that if the problem didn't exist at the time of the scan they couldn't see anything any way. The car failed to fail for them so I guess a scan wouldn't have shown anything. But I'm not the pro, so I don't know if this is true or not. Is it?

Also, there is no hessitation with the restart. Bring the car to a full stop, put in Park, turn the key and it starts right up again and off we go till.
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Thursday, May 29th, 2008 AT 7:34 AM
Tiny
RHALL77
  • MEMBER
If you take it to a dealer the can put a vehicle recorder in it and see what it is doing when the car stalls. It sounds like a possible bad connection some where or a theft system problem. I think they should scan all the modules in the car and see if there is any codes. I dont under stand why they didnt. When I worked for a dealer, that was the first thing I did.
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Thursday, May 29th, 2008 AT 7:52 AM
Tiny
BLUEEAGLE65
  • MEMBER
The main problem is that I'm not close to a GM dealer and have relied on an independent garage that has done well in the past. I'll see if they are able to do the scan and if not I may have to limp to a dealer which I really hate to do for several reasons ($).

Thanks - I'll be back.
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Thursday, May 29th, 2008 AT 8:14 AM
Tiny
RODRIGOB
  • MEMBER
Have you any answers on How could be the problem and how to fix it?
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Friday, June 27th, 2008 AT 10:33 AM
Tiny
BLUEEAGLE65
  • MEMBER
It is NOT the Ignition Control Mudule and it is NOT the Crank Sensor - however, after changing the Mass Air Flow Sensor the car has not stopped on me yet. I've put over 50 miles on it so far and it has yet to fail, so I hope that is the cure. A post on another board noted identical problems with the Mass Air Flow Sensor having been the problem/cure. Keep your fingers crossed for me. Thanks.
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Friday, June 27th, 2008 AT 1:32 PM

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