Car is 4wd wagon, 1.8 TBI engine, it revs very low when first started then idles very high after it warms up, 1500 rpm, normal is about 700.
Q&AAsk Your Question
1992 Subaru Loyale
Question: How do I lower engine idle speed,or what part needs replacing? Rpm is 1500
Answer #1pushrod September 05, 2012, 13:48Master
Check for vacuum leak.
Replyrotifer, September 06, 2012, 08:03Rookie
Thanks for your reply. I have checked for that using a can of starting fluid and spraying around vacuum lines to no avail. But, I will try again as that has been suggested a couple times. I live in a remote area with no mechanics that can deal with this so I'm groping in the dark. I thought of unplugging certain components when its running to see if that shows me the component problem.
Replypushrod, September 06, 2012, 08:07Master
Try cleaning throttle body and idle air control with carb. cleaner.