Rough Idle Due to EGR Valve Sticking Open on Cadillac DeVille

Problem Description and Possible Solution

The EGR valve may stick open, causing a rough idle and/or the Check Engine Light to illuminate.

Problem Data
RepairPal Verified
Average mileage: 112,518 (35,800–220,000)
Engines affected: 4.6L V8, 4.9L V8
13 model years affected: 1992, 1994, 1995, 1996, more1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
81 people reported this problem
Viewing 1 - 16 of 16 comments
My engine idles high when I start and idles down after a few minutes what may be the problem
rough idea when stoping at lights oor just ingaged into drive
Car idles roughly and ocassionally stalls.
rough idle ony when first start engine
When at a stop the engine idols very high trying to move forward when put in park it reves very high
sometimes my car will cut off wile i;m warming it up or try to choke out at a stop light
ran rough till i got it repaired at dealership. very expensive
Rough idle. Just started after a 2 hour drive. Run fine until I stop the it seems to chug.
car was idling at 1325rpm idle control motor was not open and closing like supposed to.
having this problem right now. its hard to control the car when this happens and the mechanic can't fix it unless I can get it there so he can see/hear it. it usually dies down by the time I get there, but it returns randomly.
egr valve replaced
about the EGR i have the same problem.... the EGR is 150.00 200.00 never buy used from a junk yard or clean them i did both and lost money. you have to buy new!
I had the throttle clean new Egr new idle control valve new plug
Harsh start egr sticking open can't solve disfunction. I did a parsidic draw test and found out it was my comfort fuse draining my battery. Well, I started pulling it every night and everything was working good new egr valve and battery give or take 2 months car starts acting up even with fuse pulled.
Dies at any stop or normally when I 1st put it in drive
Rough idle at start, then stalls.