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Helmsy Helmsy is offline
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Join Date: May 2008
Location: South Australia
Posts: 281
I have been having problems with CP's and scratching my head checking lines and blaming the WUR however one of the symptoms is that during warmup and cold startup it idles low (about 400-500rpms) but idles perfectly when warm/hot.

I am now thinking that I should check the vacuum solenoid and dizzy advance/retard module for malfunction and air leaks.

I also have the thing is your #9 pic but there is a 3rd variation. See Euro vacuum diagram:

Is there something else which could cause the revs to be really low until the engine is hot then idle fine (about 900rpm).

The other symptom is mild bucking at slight throttle and the occasional small miss when accelerating after maintaining throttle position but this will entail a whole new thread so I won't hijack this one.
'85 930 - Black on Black
'95 993 Turbo - Silver

Last edited by Helmsy; 11-09-2008 at 10:00 PM..
Old 11-09-2008, 09:45 PM
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