Question about 1985 Chevrolet Corvette

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Cooling fan 85 corvette, cooling fan won't come on?

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  • Damian Lyman May 11, 2010

    have you checked the fuse if so you can take the fan out and test it to see if the motor works or if it doesn't work



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I had this same problem with my '85. I wired in an aftermarket cooling fan relay that slides into the radiator. It cost about 30 bucks from the local auto parts store and took about 20 min to install

Posted on Jun 10, 2009

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The esey fix is run a toggel switch make sure it is a meatel one plastic will melt

Posted on Jan 12, 2009


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Cooling fans won't run on high.

The diagram is a little hard to follow, but it looks like on the high fan relay there are 5 circuits like on the hi-low relay.
Pin 86 is power for the magnet, 85 is the ground signal from the module. The module grounds the magnet to move the contacts.
Pin 30 goes to the fan and pin 87 goes to a 50amp fuse.
Pin 87A is a jumper between the two relays.
The fan motor gets power from three different sources and is grounded to the car. The other two wires are return signals to the module. Kind of like a three way light switch in a house.
On the fan control relay, pins 30 and 85 are hot, pin 87 goes to the fan motor, and pin 86 is grounded by the module.
I can send you the diagram in a separate message if you need to see it.

Jul 28, 2012 | 2005 Chrysler 300

2 Answers

I have an 85 corvette. the problem is the air conditioning. I have it on high speed but the air blows out very little like if its on low speed. and the compressor and evaporator is new so what could it be...

If your car has a cabin filter (check owners/service manual) it may be clogged.

You may also have a vacuum leak under the dash causing the vent flaps to not open all the way.

Jun 09, 2011 | 1985 Chevrolet Corvette

1 Answer

1996 corrvette cooling fans do not come on unless u put on ac. Scanner reads same temp as analog reads[ 0 ] Car will overheat other wise. thank you

sounds like the cooling fan isn`t coming on when its suppose to.if you have 2 fans on the car then the one that comes with the a/c only works with the a/c.the other one works with the engine temperature sensor that sends a signal to the computer that turns on the cooling fan.cooling fans are a common problem with gm`s.with jumper wires you can feed the fan directly from the battery if it won`t work then the fan needs could also be the fan relay in the relay box.have you checked the fuses.with it having been on a scanner it should have shown a code for the circuit,as such if there was a problem with the relay,fuse or computer it should have shown i would say its probably the cooling fan motor.

May 09, 2011 | 1996 Chevrolet Corvette

1 Answer

Over heats at adle 1993 corvette where are fuses for the cooling fan in my 1993 corvett

The cooling fan relays are located on the upper radiator support in front of the left front wheelhouse.

you have 2 relays for your fan, primary and secondary
their controled by the PCM according to the temperature

Jun 30, 2009 | 1993 Chevrolet Corvette

1 Answer

1976 chevy corvette stingray cooling fan vibrates

Better check to see if the nuts are still tight on your fan.

May 31, 2009 | 1972 Chevrolet Corvette

1 Answer

1976 corvette cooling fan vibrates

Check to ensure that all the bolts holding the fan to the water pump are equally tight.

May 31, 2009 | 1972 Chevrolet Corvette

2 Answers

1992 corvette - cooling fans do not actuate at temperature.

Do the fans come on when you turn on the air conditioner. I do believe the temp switch for the fan is on the passenger side of the engine above the starter.

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