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Old 06-03-2008, 10:10 AM   #3
nightmare
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Join Date: May 2002
Location: Hammond, WI
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Re: '91 S-10 blazer idle problem

Quote:
Originally Posted by trailwart View Post
check the cts and there is another 1 i thionks its the iac. also the egr if not properly working can cause eradic running. pull it off and clean it, have a new gasket ready to go on and put a skim coat of anti seaze on the gasket so it can be removed for cleaning next time.
Thanks trailwart. I'll have him take a look at possibly replacing the egr. What is the cts though? Also, if the iac is what I think it is, isn't that the sensor in the air hat, close to the heat riser? I guess that is functioning properly. It does the same thing whether or not the air breather is on the tbi or not.
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Originally Posted by GMCMAX View Post
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