Mar 022018
 

1992 Cadillac Fleetwood

My car is idling too fast. I have a red light “inflation” button, and then also check engine light on and off. The idle will go fast, sometimes I can kick it down and then it increases again. What is the likely cause?


High Idle Casue

Vacuum leak.

Anytime there is a vacuum leak you can expect the rpms at idle to increase. The engines sensors know there is an increase of air and it compensates by adding extra fuel. Also with the check engine light on it is a good idea to check the codes. Since this vehicle is older than 1995 the codes can be read without a scan tool.

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