Question about 1985 Pontiac Firebird

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1985 pontaic trans am/fire bird cooling fan doesn't work

I have replaced the fan and the relay switch

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  • Pontiac Master
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What engine? Possibility of coolant temperature sensor comes into play here as well.

Posted on Jun 27, 2009

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Cooling fan on 1987 pontiac fire bird 2.8 v6


The computer grounds the fan relay when the fan is needed.
You would check the relay for power and a ground signal from the computer when the engine reaches 220 degrees.

Apr 14, 2013 | Cars & Trucks

1 Answer

Fans only kick on when I run my ac. I replace my coolant sensor still nothing. I have checked the fuses. Where do i go from here?


Sounds like this may be a faulty fan motor, the low speed in these fan assemblys go bad, but the hi speed works when the a/c is turned on. I would check for the cooling fan relay first... you can usually switch this relay with another relay of the same and see if that makes the fan kick on, if it doesn't then i would go with replacing the electric cooling fan motor. Hope this helps

Oct 27, 2012 | 1998 Plymouth Voyager

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Cooling fan(s) wiring diagram


Its either t Cooling Fan Switch ABCDEFGHIJKLMNOPQRSTUVWXYZ Inspect/Test/Replace

To find the RADIATOR COOLING FAN MOTOR RELAY, we need additional information about your 1995 Oldsmobile Aurora 4.0L SFI DOHC 8cyl.
Please select one of the following:

The Radiator Cooling Fan Motor Relay is located: Under hood, passenger side, upper firewall, mounted in corner in relay block
When testing a cooling fan switch, first test it with the engine cold, then test it when the engine reaches a specified temperature. Check your vehicle's service manual for more directions.
To check a switch, disconnect the connector at the switch. with an ohmmeter, check for continuity between the terminals of the switch with the switch moved to the on position and to the off position.

To find the RADIATOR COOLING FAN MOTOR RELAY, we need additional information about your 1995 Oldsmobile Aurora 4.0L SFI DOHC 8cyl.
Please select one of the following:

The Radiator Cooling Fan Motor Relay is located: Under hood, passenger side, front side of wheelwell, mounted in relay panel
The continuity through a switch can be checked with an ohmmeter. With the switch open, there should be infinite resistance. With the switch closed, there should be zero resistance. With the switch off, there should be no continuity between the terminals. With the switch on, there should be good continuity between the terminals. If the switch is activated by something mechanical and doesn't complete the circuit when it should, check the adjustment of the switch. (Some switches are not adjustable.) If the adjustment is correct, replace the switch. Another way to check a switch is to simply bypass it with a jumper wire. If the component works when the switch is jumped, a bad switch is indicated.
Voltage drop across switches should also be checked. Ideally, when the switch is closed there should be no voltage drop. Any voltage drop indicates resistance and the switch should be replaced.
he fan motor,the fan switch,or the coolant temp.sensor.

May 02, 2012 | 1995 Oldsmobile Aurora

1 Answer

I took my 2001 pontaic ateck to emissions and didn't pass it fail.due to the cooling fan 2 control curcuit what do I have to buy for this problem?


My guess would be a fan relay or it could be a short in that circuit somewhere.Replace the fan relay with one that has the same part number in the fuse box to see if its the relay that is faulty.

Feb 24, 2012 | 2001 Pontiac Aztek

1 Answer

MY 85 STANZA FAN WONT KICK ON AND I REPLACED THE THERM AND THE RADIATOR FAN SWITCH. STILL OVERHEATING AND NOW THE A/C WONT BLOW OUT VENTD


Possibilities include blown fuse due to too much fan current draw, faulty wiring, faulty cooling fan relay, check the cooling fan relay in underhood fuse box. the contacts may be burnt and sticking.

Jul 07, 2011 | 1985 Nissan Stanza

1 Answer

4.1 engine. cooling fan wont come on.How can I test the fan motor? Or is itthe sensor?


disconnect the fan and plug it direct to battery using some jumper wires(speaker wires do fine) and if it runs then there is a problem with a coolant sensor or a cooling fan relay. If it doesn't run, then u need a new fan.

Jun 27, 2011 | 1985 Cadillac Fleetwood

1 Answer

I need to find out why there is no power to my cooling fans for a 1985 honda accord


I would check the fan relay and fan fuse. Also the radiator fan switch mounted in the motor could be bad. The fan switch is usually the problem.

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May 24, 2010 | 1985 Honda Accord

1 Answer

1985 nissan sentra new alternator and battery wont hold charge fan on toggle switch having electrical issues


that may be the problem, if the relay is activated it will drain the battery, try removing the fuses for the cooling fan to see if this is the problem, start with that, remove power to fans, even remove the fan relay or relays,

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Location of the fuel pump relay switch 1985 Ford F150


Its under the hood drivers side on the upper firewall.

Apr 13, 2009 | 1985 Ford F150

1 Answer

Cooling fan not coming on. 1985 chevy cavalier 2.0L


I'm not familiar with your exact car but a friend of mine had a similar problem the solution was to replace the electrical relay for the cooling fan. Consult a wiring diagram to see if there is a relay (there should be) and replace it.

The other possibility off the top of my head is a short in the wiring somewhere. Power the fan directly and ensure it works fine. If the fan is OK then the problem is likely in the wiring or wire connectors somewhere. That should help narrow down the problem. Good luck!

Dec 14, 2008 | 1985 Chevrolet Cavalier

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