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fan switch not working??

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Old 07-19-2011, 06:40 PM
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Car: 86 IROC Z, 92 RS
Engine: 305 4bbl, 305 TBI
fan switch not working??

I have the green w/white stripe grounded so I can turn the fan on when I want to. I left the switch off while idling, and it was getting too warm, and the fan wouldn't come on till I turned it on w/the switch. Could the fan switch be bad? Would the fan come on w/ground switch if the fan switch was bad?
Any input would be appreciated.
Old 07-20-2011, 11:56 AM
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Car: 92 Camaro RS
Engine: LO3
Transmission: T5
Axle/Gears: stock
Re: fan switch not working??

Those fan switches are famous for short lives , and as long as you provide a ground through either the fan switch OR your manual switch to the relay, the fan should go on
Old 07-20-2011, 12:45 PM
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Re: fan switch not working??

Originally Posted by henryd3
Those fan switches are famous for short lives , and as long as you provide a ground through either the fan switch OR your manual switch to the relay, the fan should go on
I remember now when I blew a relay the fan didn't come on when I grounded the green/whit stripe wire. It didn't occur to me till after I posted the thread. So grounding the switch is the same a bypassing it?
Old 07-20-2011, 12:59 PM
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Re: fan switch not working??

Yeah, All the fan switch does when it reaches it's temperature is ground the wire
Old 07-20-2011, 01:12 PM
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Re: fan switch not working??

Makes sense.
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