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Idle higher after muffler replacement

posted by  brick8 on  Thu Oct 2 16:02 CST 2003
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last visit: Mon Nov 11 07:36 CST 2013
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About a week ago I replaced the rusted out rear muffler on my 1988 740 turbo. An unexpected consequence is a higher idle. It used to idle around 750 rpm (using the car's tach). The tachometer now shows an idle of around 1,500. Is this just coincidental or is there a relationship between the muffler and idle speed? I have read the idle speed adjustment FAQ and see that there is a great risk of me screwing things up (especially because I do not own a tach), so I am not sure what to do next.






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New Idle higher after muffler replacement
posted by  brick8  on Thu Oct 2 16:02 CST 2003 >


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