Close
Cadillac
Seville STS
20

Rough Idle Due to EGR Valve Sticking Open on Cadillac Seville STS

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: 132,521 (105,986–151,100)
11 model years affected: 1993, 1994, 1995, 1996, more1997, 1998, 1999, 2000, 2001, 2002, 2003
20 people reported this problem
Comments
Viewing 1 - 3 of 3 comments
rough idle and missing on take off and when i press gas
Idles up and down constantly
Idles up and down at times. Sometimes hard starting when cold, msut press gas when starting like one of my "old" carb. cars.