While driving engine shuts off if I take my foot of the accelerator

1996 CADILLAC DEVILLE CONCOURS
118,236 MILES
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ANONYMOUS
  • MEMBER
  • 1 POST
My car wont stay running ounce i take my foot off the gas it shuts off on me. i just replaced the IAT sensor on it and it was running just fine. now it's doing it again. what could it be?
Jan 10, 2013 at 6:44 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Good evening,

A common issue for this is the EGR valve. When the valve does not close fast enough, it creates a massive vacuum leak and will stall when it comes to a stop. It will start right back up and drive normal until the issue happens again.

I would replace the EGR valve and make sure the passages are clean of all carbon.

I attached the procedure and location of the valve for you.

Roy
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Apr 27, 2020 at 11:26 AM
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RSTATEN
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  • 1 POST
V8 100,000 miles.

Car stalls at stops.
Apr 27, 2020 at 11:30 AM (Merged)
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BUDDYCRAIGG
  • ✓Experienced Mechanic
  • 2,262 POSTS
does it only do it after you have been over 45mph?
could be the torque convert lock up solenoid.
Apr 27, 2020 at 11:30 AM (Merged)
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FACTORYJACK
  • ✓Experienced Mechanic
  • 4,159 POSTS
Egr valve sticking open, fuel regulator leaking, high secondary resistance(plugs/wires). Can you keep it running with some throttle, and does it run poorly at that time?
Apr 27, 2020 at 11:30 AM (Merged)
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