Over heats at idle cools off while driving

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08-19-2015, 08:39 PM

Jack88cannon

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Join Date: Aug 2015

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Over heats at idle cools off while driving

99 Chevy blazer 4x4 4.3l vortec. Over heats when sitting at idle for a few mins and cools down after driving for a little bit.

08-19-2015, 08:49 PM

Bolbol

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Join Date: Aug 2014

Location: Glendale, CA

Posts: 195

not exactly sure but maybe it could be a bad sensor? or maybe the fan kicks in only when you are driving? Just a thought

08-20-2015, 07:28 AM

rxjimmy

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Join Date: Oct 2014

Posts: 119

Check out your fan clutch. If the blades are free-wheeling with the engine off, then that could be your problem. Fan clutches do go bad occasionally. overheat at idle is a common symptom.

08-22-2015, 05:39 AM

newguy

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Join Date: Feb 2012

Location: Easthampton, ma.

Posts: 4,205

Or a partially plugged radiator

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