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Old 11-02-2010, 01:57 AM   #1
Pepi69
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Default AU2 thermo fans not functioning

Hi,

Cooling fans have stopped working - checked fuse not problem - fans works off battery - and I'm not that bright, would appreciate some advice.
Thanks

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Old 11-02-2010, 02:02 AM   #2
disco frank
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have u checked the relay ?

there are 2 iirc in the fuse holder if u turn the fuse holder cap upside down u should see a diagram telling you what relay's and fuses are what

bit hard to explain how to check relay's best bet is go get 2 new ones should be about $20
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Old 11-02-2010, 08:31 AM   #3
aufairmontghia
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As Disco frank has said, if the two 40amp fuses are ok...

Check the relays??? There are three of these!!!

Two 4 blade 40amp relays white in colour & one 5 blade 40amp green relay.
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Old 11-02-2010, 12:32 PM   #4
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Thankyou for your prompt response gentle men - actually that would have been my next question 'which relay N#?'......

in the immortal words of Meatloaf...."2 out of 3 aint bad"...... :togo:

thanks
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Old 12-02-2010, 01:10 AM   #5
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Quote:
Originally Posted by aufairmontghia
As Disco frank has said, if the two 40amp fuses are ok...

Check the relays??? There are three of these!!!

Two 4 blade 40amp relays white in colour & one 5 blade 40amp green relay.

hmm i thought they went from 3 relays in e series down to 2 in the AU

being a long time since i looked LOL
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Old 12-02-2010, 10:09 AM   #6
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Make sure they are plugged in!!!!!
Might sound silly, but they come loose.
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Old 12-02-2010, 10:38 AM   #7
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Might be a long shot - isn't there some sort of temperature sensor that kicks them in when the engine gets to a predetermined heat? Any chance it could be that sensor if its not the relays or fuses?
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Old 12-02-2010, 04:31 PM   #8
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Sensors to computer, computer controls fans. Hi and low function fans run in series.

My high was working low wasnt and engine was over heating.

Replaced fans $100 from wrecker. all ok now.
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Old 14-02-2010, 02:14 PM   #9
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Hi all,

took car to auto spark and he is stumped.......can't resolve problem - still not working.
I was thinking, can I just hardwire the thermo fans to the battery and let them run when ever the car is operating, even rig a toggle switch back to the cabin. I don't see why this would be a problem. My main question is do these thermo fans for au2 run at different speeds or on/off. I think the hardwire option is the best way - cost enuff already......:(
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Old 15-02-2010, 12:35 AM   #10
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[QUOTE=illusivedreams]Hi and low function fans run in series.

QUOTE]
Quoting myself.

They are a 2 speed high and low : Again run in series. Fom what I can understand you can loose low speed and high still works.

So check that you have both/// Im not sure how its wired. Alternatively come to the wreckers and give the $20 and borrow the fans for 5 minutes there are only to bolts holding the fans in place and bottom slotts in.


See what happens you might be lucky./
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Old 15-02-2010, 08:19 AM   #11
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R u blowing fuses for the fans... check fuses again!!!
Then....
Check with a multimeter or aligator clips with a globe at the plug before the thermos. That way you can check for current when the low speed thermos r suppose to kicks in... just above operating temperature, between n/o on temperature gauge.
When the a/c is turned on, the thermos should come on straight away.
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Old 15-02-2010, 12:47 PM   #12
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Check the 10A fuse in the dash, fuse 7 on the top row from the left
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