Question about 1992 Toyota Corolla

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How do i test the fan if i already replaced the relay and the fan switch and it still doesn't work? What else could be the problem?

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HOT WIRE FAN SEE IF FAN MOTOR IS WORKING.IF NOT REPLACE FAN,IF FAN WORKS WHEN HOT WIRING.IF COOLANT TEMPERATURE SENSOR WORKING.YOU HAVE FAULTY FAN WIRE CONNECTOR OR PCM FAULTY.

Posted on Mar 24, 2011

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You could apply 12v battery power directly to the fan itself...there should be 2 wires coming from the center of the fan, follow these and you should come to a plug that you can un hook as if to remove the fan. on the fan side of the wires, hook them to 12v power, one wire + one to - if the fan does not turn, switch the wires polarity and test again. ( the fan should run either way, polarity just dictates direction of rotation) if the fan spins, the problem is on the car side. if not the fan itself is suspect. test vehicle side with known good fan or test light.

Posted on Mar 24, 2011

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: 01 grand cherokee fan relay/oil pressure

I don't know if this will help anyone, but i had a issue with my jeep running hot and check engine light coming on as well. After alot of trips to different shops - the last one found that there were two senors in the engine for the fan that need to be changed. Everyone would aways fine the one up top but not the second one. After that, have not had any other problems like it since.

Posted on Mar 23, 2009

leetamara
  • 702 Answers

SOURCE: Cooling fan wont work

The water temp sensor is located near the thermostat housing. This sensor is what tells the ECM to turn the fan on/off. The water temp sending unit is located near the same area. You know you have the correct sensor is because the water temp sensor has a 2 prong plug. The water temp sending unit only has 1 prong.

Posted on Sep 27, 2008

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SOURCE: Heater Fan/Blower does not work.

what you need is a blower motor resistot

Posted on Dec 04, 2008

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SOURCE: 1997 lexus es300 over heats all of the sudden when

Reference to Lexus getting hot after engin run for a short time: Replace the sensor behind the engin radiator cap on engin.

Posted on Oct 16, 2009

cragdon
  • 166 Answers

SOURCE: my 1991 honda accord radiator fan wont turn on i

there is a temp sending unit in bottom of radiator that you need to replace my car did the same

Posted on Dec 28, 2010

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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.
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