Cadillac Seville STS Problem Report

Cadillac Seville STS Rough Idle Due to EGR Valve Sticking Open

(16 reports)

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

rough idle and missing on take off and when i press gas -
Idles up and down at times. Sometimes hard starting when cold, msut press gas when starting like one of my "old" carb. cars. -
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