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Help Engine reving its nuts off

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Old 03-24-2016, 09:11 PM
max1960's Avatar
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Default Help Engine reving its nuts off
Hi 95 blazer 4.3vortec engine idles at 2500 even from cold replaced all the airIntake sensors ie:- intake temp, throttle position , iac, map, checked for vacuum leaks all ok changed fuel filter any ideas
 
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Old 03-27-2016, 07:12 AM
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The valve in the center of the intake runners, is it fully seated?
 
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