Fan On Full Speed When AirCon Is On

4.2 V8 40v biturbo - 450 bhp
4.2 V8 40v biturbo - 480 bhp (plus)
steve2003rs6
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Re: Fan On Full Speed When AirCon Is On

Post by steve2003rs6 » Mon Feb 05, 2024 12:52 pm

If you need the fan £100 delivered in the uk.
I know it’s working fine as I ran it on Vagcom before we removed it.
The new one I bought was £250.
The large fan which I bought at the same time was over £1200.
If you need the small fan just Let me know.

Fingers crossed for you it’s your fuse that’s blown.

lewp
1st Gear
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Joined: Wed Apr 01, 2015 9:06 am

Re: Fan On Full Speed When AirCon Is On

Post by lewp » Mon Feb 05, 2024 1:51 pm

Thanks chaps i will have a look and report back..

JESUS on the price of the big fan that makes me feel sick
Daytona Grey C5 RS6
MRC Stage 2 550BHP 850nm - Bilsteins - Hotchkis ARBs - Tubular Manifolds - Wagners - Apikol Intake - Custom Exhaust With Anti Drone - X-Carlink - 3rd Gearbox :oops:

steve2003rs6
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Re: Fan On Full Speed When AirCon Is On

Post by steve2003rs6 » Mon Feb 05, 2024 2:04 pm

Yes I felt sick as well. It also has its own built in controller
Had to purchase it from Germany along with some other stuff.
Had to use a freight forwarding company in Germany. Audi Tradition wouldn’t post direct to the UK. So I incurred additional costs to get it delivered to the uk.


Large Fan
IMG_0394.jpeg

Small Fan
IMG_0351.png

lewp
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Re: Fan On Full Speed When AirCon Is On

Post by lewp » Mon Feb 19, 2024 11:34 am

Okay so i did some testing after sorting my headlining out and the output test did make the fan spin after clipping it back in the housing properly which is good.

What are the parameters for the aux fan to work though as with the A/C on it still does not seem to spin!
Daytona Grey C5 RS6
MRC Stage 2 550BHP 850nm - Bilsteins - Hotchkis ARBs - Tubular Manifolds - Wagners - Apikol Intake - Custom Exhaust With Anti Drone - X-Carlink - 3rd Gearbox :oops:

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Shoppinit
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Re: Fan On Full Speed When AirCon Is On

Post by Shoppinit » Mon Feb 19, 2024 12:20 pm

ECU decides based on coolant temp and ambient temp.

Also the HVAC can ask to activate the fans via the ECU.

Does your AC blow cold?
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."

lewp
1st Gear
Posts: 55
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Re: Fan On Full Speed When AirCon Is On

Post by lewp » Mon Feb 19, 2024 2:14 pm

Yes the AC blows nice and cold the only thing ive noticed is with the AC on the main fan sounds like a Jet and is spinning at what sounds like almost full speed
Daytona Grey C5 RS6
MRC Stage 2 550BHP 850nm - Bilsteins - Hotchkis ARBs - Tubular Manifolds - Wagners - Apikol Intake - Custom Exhaust With Anti Drone - X-Carlink - 3rd Gearbox :oops:

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Shoppinit
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Re: Fan On Full Speed When AirCon Is On

Post by Shoppinit » Mon Feb 19, 2024 2:22 pm

Wouldn’t worry about it then.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."

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