Porsche 928 The Porsche 928 was made from 1978 to 1995, during which time it was Porsche's most expensive model.

high idle speed

  #1  
Old 05-01-2008, 08:29 PM
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Join Date: May 2008
Posts: 2
Default high idle speed

my 928 just started idling at 1000 - 1200 rpm all the time. I have cleaned the intake, and made sure the throttle cables were not caught. What else can I check to solve this annoying issue??Also, how hard is it to change a valve cover gasket? This is the 1988 928S4 withautomatic
 
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