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herc795 · 07-17-2013

My 1990 heats up in traffic. The primary fan was working intermittently. I have changed both fan motors and relays. the secondary is working only when ac is on. When I get to driving speeds the temp returns to normal. I think I need to change the Coolant Temp Sensor. Does this sound correct? Also will I need to pull the plenum to do that? Any help would be great. Thanks

07-17-2013	#1
herc795 Join Date: Jul 2013 Location: Mansfield, OH Posts: 20	Coolant Temp Sensor My 1990 heats up in traffic. The primary fan was working intermittently. I have changed both fan motors and relays. the secondary is working only when ac is on. When I get to driving speeds the temp returns to normal. I think I need to change the Coolant Temp Sensor. Does this sound correct? Also will I need to pull the plenum to do that? Any help would be great. Thanks