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98 Blazer 4.3 with high idle?

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Old Mar 26, 2011 | 09:37 AM
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Default 98 Blazer 4.3 with high idle?

I recently had the intake gasket replaced.And a tune up.wires/plugs/dist.cap/rotor.And now on start up it idles at 900-1000 rpm.It starts sputtering if you drive off.But if you let it idle for 5 minutes the rpms slowly drop to around 600 and then it runs fairly smooth.
Any ideas?Whats the proper idle speed?
Thanks all

Almost forgot,Its not throwing a CEL code.
 

Last edited by BipolarExpress; Mar 26, 2011 at 09:44 AM.
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