Once Every Few Months My Single Fan Stops Working. I Can't Figure it Out
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Senior Member
Joined: May 2013
Posts: 604
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Car: 1986 Camaro IROC Z
Engine: LB9 305 TPI
Transmission: 700R4
Once Every Few Months My Single Fan Stops Working. I Can't Figure it Out
So I have a 1986 Camaro IROC Z with the single fan with no fan switch. Last year it stopped working. I replaced the fan motor, the pigtail, relay, the CTS, the temp sender, the ac compressor pig tail and the ECM. It never worked. I did buy a fan controller and got it working. Now it's not working again. It was working fine this morning but then it stopped working. I can't figure it out.
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Joined: Sep 1999
Posts: 2,985
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From: Colorado USA
Car: '83 Firebird (T/A Clone)
Engine: 350 with L-69 components
Transmission: 700R-4, 2000 RPM stall converter
Axle/Gears: 10-bolt/3.73 ..
Re: Once Every Few Months My Single Fan Stops Working. I Can't Figure it Out
I would bet the relay is worn out...
Thread Starter
Senior Member
Joined: May 2013
Posts: 604
Likes: 25
Car: 1986 Camaro IROC Z
Engine: LB9 305 TPI
Transmission: 700R4
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Joined: Sep 2010
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From: Georgetown TX
Car: Base 91 'bird
Engine: 3.1 v6
Transmission: 4L60
Axle/Gears: 9-bolt 3.27 & PBR
Re: Once Every Few Months My Single Fan Stops Working. I Can't Figure it Out
Check various ground wire contacts are clean.
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From: Mooresville NC
Car: LOWERED ♦ CRIMSON METALFLAKE
Engine: ► 400 KUBES ◄
Transmission: 765R4
Axle/Gears: EATON POSI 4.56
FanTastic
Troubleshoot before replacing parts.
Apply battery power to the fan to see if it runs.
Use a voltmeter to see if there is power on the
orange or red wire at the relay.
Is there power there?
You can test much of the circuit by having the key in the RUN position then grounding pin B of the ALDL (Assembly Line Diagnostic Link).
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