Cooling fan problem
01-10-2011 | 07:14 AM
#1
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From: Buckley AFB, CO / Crestview, FL
Car: 83 Z-28
Engine: LG4
Transmission: 700R4
Axle/Gears: 02 WS6 Rear w/3:42
Cooling fan problem
Car is a 92 RS with the 305 tbi. It has the single fan setup. The fan does not turn on when checking for codes. The fan does work while the AC is engaged. What could the problem be?
01-10-2011 | 11:52 AM
#2
Joined: Aug 2009
Posts: 1,821
Likes: 39
From: Central California
Car: 92 Camaro RS
Engine: LO3
Transmission: T5
Axle/Gears: stock
Re: Cooling fan problem
Fan switch on passenger side of head. Lots of threads on this topic with a wide variety of solutions can be found by doing a search on "fan switch" Or the connector could be faulty. Ground the wire going to the switch with the key on. If the fan works, that's the problem.
01-10-2011 | 11:58 AM
#3
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Supreme Member
iTrader: (17)
Joined: Feb 2003
Posts: 2,182
Likes: 0
From: Buckley AFB, CO / Crestview, FL
Car: 83 Z-28
Engine: LG4
Transmission: 700R4
Axle/Gears: 02 WS6 Rear w/3:42
Re: Cooling fan problem
I thought it could be the fan switch but wasn't sure if that still controlled the fan while in diagnostic mode. Will check out your suggestions.
Fan switch on passenger side of head. Lots of threads on this topic with a wide variety of solutions can be found by doing a search on "fan switch" Or the connector could be faulty. Ground the wire going to the switch with the key on. If the fan works, that's the problem.
01-10-2011 | 12:07 PM
#4
Joined: Aug 2009
Posts: 1,821
Likes: 39
From: Central California
Car: 92 Camaro RS
Engine: LO3
Transmission: T5
Axle/Gears: stock
Re: Cooling fan problem
Yeah, on the single fan system you have, the only things that control the fan are the switch and the relay. Computer has nothing to do with it
01-10-2011 | 01:04 PM
#5
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Joined: Sep 2002
Posts: 9,192
Likes: 17
From: Cary, North Carolina
Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi
Re: Cooling fan problem
Fan not supposed to come on when checking codes. Only time fan comes on is when A/C is on, or when coolant temp gets to up to the fan switch temp.
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