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Slighty surging idle at running temp

784 views 1 reply 2 participants last post by  Uboater 
#1 ·
Hi All,

I have a 300CE '88' model, 131k miles on the clock.

The car is great, and gives me such joy to drive. yet i has develped a slightly surging idle only when the gear lever is in Neutral or Park, in drive its not as bad.
What i have noticed is that with the slight surge, the economy gauge moves also, which would indicate a vacum leak. I have changed one of the pipes to the ICV (also cleaned), as it was cracked, and will change the other one, leading to the manifold this weekend.

My question is that, have i missed any other pipes which may require checking?
like the breather pipe for the tranny (where is it?), or brake hose? or could there be another reason for this?

Many thanks for your help in advance.

H:confused:
 
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