Question about 1990 Subaru Legacy

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Auxiallry fans on radiator dont seem to come on. how do they work

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Hi, They are controled by a thermo-fan switch, when coolant reaches a certain temperture fan switch turns on radiator fans and brings temperture back down. Thermo-Fan switch is located bottom of radiator.

Posted on Dec 03, 2008

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I have a 94 plymouth sundance 6 cylinder the fan that cools he radiator is not working what is he problem


3liter 6cyl? (5 or 6 engines used, 2.2L up to 3.8)
in all cases (engine rad cooling fan) (seems not)
clutch fan failure? (if old mech. type fan) replace it.
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  1. bad control sensor.
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what we do is get it hot and see if fan works at the FSM stated trip temperature. (225F is a guess, ) alldata.com has this number too.
if the fan is dead, we check voltage the fan, 12v ? fan is dead.
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the work backwards from here, finding true cause. easy huh?
any cheap voltmeter made works .

the ECT is for the engine. EFI system. TBI?
but the Fsm states.
All models equipped with electric cooling fans use this sensor to control the cooling (radiator) fan operation.

i dont have the wiring set for this car.
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Why does my mitsubishi lancer always seem to over heat


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2006 kia optima overheating, no apparent leaks, top radiator hose gets hot lower never heats up, fans dont come on


I would be looking at the radiator fans themselves, especially if the fans are open
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Having issues with a 2000 chevy impala overheating have changed the radiator and the thermostat fans seem to be working ok but overheats at idle in stop and go traffic, after a certain amount of time it...


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My pulsar in overheating put new coolant in no change fans dont seem to be working but engine was hot and gauge showing only halfway, cant find the thermostate is it in the housing the top hose is...


Make sure the fans are coming on or it will over heat. If the fans come and the gauge is reading hot check the thermostat. Follow the top radiator hose to the engine block it probably has 2 bolts holding the thermostat housing on.

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The fuel pump relay is located on the engine driver's side of the firewall. It is held by a bracket with two other relays-primary and auxiallry fan. The fuel pump relay is between the 2 relays. It should have a test lead extending from the connector.
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Electrical fans don't work


Several things can cause this. I'm 99% sure the sensor for the fan control is in the radiator its self. 3 wires if I remember correctly, This is the most common problem. If you dont know how to test it I recomend taking it to a garage. Is antifreeze full? Above the level of the sensor? The fans themself could be bad. Do either of them come on when you turn on the A/C? if so, that fan is good for sure. Either way, welcome to the wold of VW, time to test some wires. That gets a bit to involved to detail in here. Best bet for the D.I.Y.er is buy the dealer manual. Expensive but woth every penny!

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Radiator overheating


could be a number of things
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also inspect your radiator cap and the overflow
let me know if you need further assistance

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