Hi everyone,
My '87 320i had a problem with a high idle speed (about 1100 rpm). I decided to remove the throttle body and clean the switch contacts in the casing below it. When I got the throttle body off the manifold I found quite a lot of oil lying in it and a lot had run down the throttle spindle and into the switch casing, causing the switch not to work and hence the high idle speed.
My question is; how did the oil get into the throttle body in the first place? The motor has done 190 000km but doesn't burn an excessive amount of oil but does use about 2 pints in 10 000km. However I think most of that is from a leak that comes from the rear crank seal...
I thought it might be a blocked engine breather or something. Does anyone have any suggestions as to what might be the cause?
Thanks in advance.
A J
My '87 320i had a problem with a high idle speed (about 1100 rpm). I decided to remove the throttle body and clean the switch contacts in the casing below it. When I got the throttle body off the manifold I found quite a lot of oil lying in it and a lot had run down the throttle spindle and into the switch casing, causing the switch not to work and hence the high idle speed.
My question is; how did the oil get into the throttle body in the first place? The motor has done 190 000km but doesn't burn an excessive amount of oil but does use about 2 pints in 10 000km. However I think most of that is from a leak that comes from the rear crank seal...
I thought it might be a blocked engine breather or something. Does anyone have any suggestions as to what might be the cause?
Thanks in advance.
A J