Howling from 2.3


P.L.A.N. - A.

15+ Year Member

Joined
Aug 6, 2009
Messages
22
Points
3,101
Vehicle Year
1995
Transmission
Manual
So, just picked up a '95, 2wd, 2.3, manual for commuting. When it warms up, it makes a varied howling noise from what sounds like under the valve cover. If I loosen the oil fill cap, it goes away. It is being created by excess vaccum in the valve cover but I don't know what to do to make it stop. I have not become all that familiar with the EGR stuff. Has anyone heard of this before? It only happens at an idle and a bit of throttle clears it then it comes back as soon as it idles again.

I have read a bit about a vaccum cleaner noise from the air intake, but this isn't the same thing I don't think.

Any help would be appreciated.
 
wild guess but did you check the hose from the valve cover to the intake? also maybe check the pvc valve in case it's clogged up..
 

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