m20 idles high when warm?

Need technical Q/A then you're in the right place

Moderator: martauto

bmw9818
E30 Zone Addict
E30 Zone Addict
Posts: 2561
Joined: Tue Aug 11, 2009 11:00 pm
Location: Croydon

Post Mon Dec 10, 2012 8:06 pm

got a small issue the m20 idles at 1300 ish when it gets to temp, (manual 2.5)

when its cold its high then drops after 10 seconds to 6-700, it stays there then after it warms up it bounces a bit and settles at 1200,

i cleaned the icv blew it out with air, tps clicks when shut, intake pipe looks good as well, and i take it if there where vacuum leaks it would do it even when cold?
steve_k
E30 Zone Team Member
E30 Zone Team Member
Posts: 8044
Joined: Fri May 23, 2008 11:00 pm
Location: in the vale of mansfield

Post Mon Dec 10, 2012 8:17 pm

just a thought but have you tested the blue temp sensor as per the guide in the wiki?
i had this type of problem myself once & after following the guide i managed to get it sorted.
if it's got t*ts or wheels it's bound to be trouble...............prove me wrong.
getting oral sex off an ugly person is like rock climbing.....don't look down ;)