Engine rpm going up and down-1000-3000
#1
#3
Sorry, I should have put that in the post it is a 2001. Wife had it out of town and when she started it to come home the problem started. She drove it about 150 miles home. This morning I started it and it idled at 1000 for a minute or two then started racing up and down again. Very rhythmic, like it is trying to find where it should be. Can feel it going up and down while driving. Still no codes
#4
I'd buy some MAF cleaner and throttle body cleaner and give everything a good washing. If it continues then I'd remove the IAC and clean it too (you need a new gasket to replace). While doing any of this I'd be looking for any broken vacuum lines. And check the condition of the air filter while you are in there.
Thread
Thread Starter
Forum
Replies
Last Post
waune
Volvo 850
3
03-05-2011 12:26 PM