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2001 caddy devilie stalls when letting up on gas no code signs


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my 2001 caddy deville stalls sometimes when I start it back up I have to keep foot on gas to keep it running it will sometimes go for weeks without stalling it is usally hot weather when it happens (I think) not sure there are no code warnings thanks fish 4 food

Edited by fish4food
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2001 had issues with the crank sensors.

Go to the bottom of this posting, you will see a link to how to retrieve DTC codes, follow the directions for your year and lets see if you have any telling codes that have set and post them here so we can help

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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The CKP sensors don't always throw a code. If they are original, may as well change them anyway. You'll probably have to sooner or later.

When was the TB last cleaned?

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CKP sensor is the crank position sensor, it is what I was talking about above in my post. When they go bad, sometimes they do not set a code, but sometimes they do. Its always prudent to check for codes as I requested above to see what has been set. No doubt you will at least have a STALL code, but others may show up and help us. Follow the directions at the bottom of this post to retrieve the codes and post them here.

TB is the throttle body, occasionally, the throttle body gets dirty, restricts air because the IAC or Idle Air Control is dirty or its port is clogged or dirty and it will stall as a result. The throttle body has a throat and a throttle plate and they must be cleaned especially the back and edges of the plate. The IAC should be removed and the pindle cleaned and the port cleaned. Do not flood the throttle body with carb or upper engine cleaner. Use a toothbrush, detail brush and rags with GM upper engine cleaner (UEC), the solvent not the spray foam.

How mechanically inclined are you? Are you going to attempt this yourself?

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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