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ef twin thermo fans not working 

 

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 Post subject: ef twin thermo fans not working
Posted: Sun Nov 30, 2008 11:40 pm 
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Location: melb
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l have a ef twin thermo fans and they do not come on ever. l have tested the fans and they work fine, can someone help me?????????????
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Posted: Mon Dec 01, 2008 9:36 am 
Smokin em up
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dunno only one of mine comes on i tested em they both work i found i got a dodgy earth so its off to the auto sparky for my car

 

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Posted: Mon Dec 01, 2008 9:45 am 
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mine stoped going on high. it was a relay
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Posted: Mon Dec 01, 2008 2:33 pm 
Getting Side Ways
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First check the engine bay fuse under the black cover next too the coolant over flow bottle. Should be labelled. The other black cover down next too the battery is relays for headlights, horn, starter, so don't go opening that one.


If that's ok you need to test the thermo fan relays behind the passenger headlights. Removing the airbox makes access alot easier. There is a 5pin relay and 2*4pin relays under the cover.

Use a multimeter to test the relays or just remove a working relay from under the dash( rear window demister will do) and swap them over. Set a/c too high as both fans should come on.

Process of elimination.....

 

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Posted: Mon Dec 01, 2008 5:52 pm 
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l have tested fuse and relays that was ok
Set a/c too high as both fans come on yes they did. but still it will not come on when the motor is hot. so what next?
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Posted: Mon Dec 01, 2008 6:57 pm 
Oompa Loompa
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Location: gold coast
QLD, Australia

replacing the temp switch on the thermostat housing????
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Posted: Mon Dec 01, 2008 10:18 pm 
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A faulty Coolant Temperature sensor can cause thermo fan faults. With the car at idle unplug the sensor plug at the thermostat housing and the thermo fans should both come on at high speed.

Hows the temp gauge and is the car been running rich, other signs of a faulty coolant temp sensor.

 

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97 EL Fairmont 4l OHC .Silver.
Exhaust: Pacemaker's, 2.5" exhaust and Hiflow cat
Intake: FRAM AIRHOG , EL GT snorkel
XR6 300kpa fuel reg Stg 2 Auto Shift Kit.6DJA ECU
PM in Qld looking too buy Toyota 4*4 SR5 Dualcab Hilux 91-97 with 2.8l diesel engine/5spd manual

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 Post subject: fans
Posted: Wed Dec 17, 2008 5:41 pm 
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Location: melb
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hi there

l unplug the sensor plug at the thermostat housing and the thermo fans should both come on at high speed yes they did! l have replace Coolant Temperature sensor, l have check all relays. and still not working , the only thing l have not replace is themostat... :oops: :twisted:
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 Post subject: Fan Working Now
Posted: Wed Dec 24, 2008 3:34 pm 
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hi there everybody

l replace all the relays and it is working

thank you for all your help :) :D 8-)
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