Tag: High Idle

2002 Buick Century, Idles High

This 2002 Buick Century came in with the complaint that the idle speed was higher than it was supposed to be and sometimes it was very high. I looked the car over and saw that a new IAC valve and and new TPS had already been installed on the engine. I did a quick check … Continue reading “2002 Buick Century, Idles High”

1997 Cadillac Deville, Erratic / High Idle, Code P0507

This 1997 Cadillac Deville came in with the complaint that the idle speed would sometimes be okay but most of the time as the engine warmed up it would get progressively higher and higher until the engine would run at about 3000 rpms on its own with no throttle input. The following picture shows the … Continue reading “1997 Cadillac Deville, Erratic / High Idle, Code P0507”