Over heats at idle cools off while driving

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Aug 19, 2015 | 08:39 PM

Jack88cannon

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Joined: Aug 2015

Posts: 1

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.

Aug 19, 2015 | 08:49 PM

Bolbol

Starting Member

Joined: Aug 2014

Posts: 195

From: Glendale, CA

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

Aug 20, 2015 | 07:28 AM

rxjimmy

Starting Member

Joined: 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.

Aug 22, 2015 | 05:39 AM

newguy

BF Veteran

Joined: Feb 2012

Posts: 4,205

From: Easthampton, ma.

Or a partially plugged radiator

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