fans not right
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Joined: Oct 2010
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From: Virginia Beach, VA
Car: 1985 Firebird S/E
Engine: SBC 350, mild cam Vortec heads
Transmission: Rebuilt 700R4 vette servo+shift kit
Axle/Gears: 3.73
fans not right
hi my primary fan i think its the primary turns on as soon as you start the car and the secondary never turns on at all what would cause the primary to run all the time? i have changed the two coolant temp sensors the on in the intake and the one in the driver side of the head
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Joined: Sep 2002
Posts: 9,192
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From: Cary, North Carolina
Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi
Re: fans not right
Sounds like someone has straight wired the fan to run always - I'd look at wiring at the fan relays for post-production wiring.
There should only be one CTS on the inatke either on or near the thermostat housing.
The driver side "sensor" is actually just a sender for the temp guage, and has nothing to do with fan operation.
On the pass side, on the head, between #6 and #8 spark plug is the fan switch, which controls the secondary fan - the primary fan is controlled solely by the computer through the CTS on/near the thermostat housing.
There should only be one CTS on the inatke either on or near the thermostat housing.
The driver side "sensor" is actually just a sender for the temp guage, and has nothing to do with fan operation.
On the pass side, on the head, between #6 and #8 spark plug is the fan switch, which controls the secondary fan - the primary fan is controlled solely by the computer through the CTS on/near the thermostat housing.
Thread Starter
Member
iTrader: (1)
Joined: Oct 2010
Posts: 347
Likes: 0
From: Virginia Beach, VA
Car: 1985 Firebird S/E
Engine: SBC 350, mild cam Vortec heads
Transmission: Rebuilt 700R4 vette servo+shift kit
Axle/Gears: 3.73
Re: fans not right
the wiring is back to factory when its doing this so i have have 2 things broken?
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