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”