Fan relay location
05-09-2009, 04:13 PM
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Car: 91 Firebird
Engine: 305 TBI
Transmission: AUTO
Fan relay location
I have a single fan setup on a 91 TBI. I replaced the motor but the fan still doesn't come on at all. Is it the relay? If so, where is it located so I can troubleshoot?
05-09-2009, 04:28 PM
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Car: 86 Trans Am, 92 Firebird
Engine: 408 sbc, 3.1L of raw power
Transmission: TKO600, T5
Axle/Gears: Moser 9", 3:70 trutac, 3:23 torsion
Re: Fan relay location
Turn the key to the run position
unplug the fan switch pigtail from he head, between cylinders6 and 8. Ground the pin in the center of the plug to the block and see if the fan turns on.
If it does, the switch is bad, if it doesn't, the relay is possibly bad.
Fna relay in on the firewall by the brake booster.
unplug the fan switch pigtail from he head, between cylinders6 and 8. Ground the pin in the center of the plug to the block and see if the fan turns on.
If it does, the switch is bad, if it doesn't, the relay is possibly bad.
Fna relay in on the firewall by the brake booster.
05-09-2009, 05:26 PM
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Car: 91 Firebird
Engine: 305 TBI
Transmission: AUTO
Re: Fan relay location
There are a few relays that look the same, can any specify which one it is?
05-09-2009, 06:53 PM
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Car: 91 Firebird
Engine: 305 TBI
Transmission: AUTO
Re: Fan relay location
I grounded the switch and it still doesn't kick on. I also tried reseting the ECM. I think the only thing left would be the relay, besides if it was the switch wouldn't it still work with the A/C on? It seems like the relay is what's common in both. I just don't know which relay it is. There are 3 that look the same. Two in the driver's side. One on the pass. side. Does anyone know which one it is?
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