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Cadillac STS The newest installation of the performance sedan from Cadillac, having replaced the Seville

runs rough after tuneup

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Old 08-23-2005, 11:22 AM
Seville650's Avatar
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Join Date: Aug 2005
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Default runs rough after tuneup
I have a 94 STS with 101,000 miles on it. After a tune-up(wires, plugs, coils, air filter,pcv valve, and cleaned the EGR valve,I did not replace the EGR valve) it still runs rough at idle(hunts up and down almost quiting) and shakes on acceleration. At cruise rpm it is also rough and fluctuates rpm. Any suggestions?
 
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Old 08-24-2006, 03:24 PM
Join Date: Jul 2006
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Default RE: runs rough after tuneup
I have the same problem.. hope we'll have an answer!
 
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