possessed fans!
possessed fans!
Hi guys and gals, looking for anybody that may help with a pair of possessed fans!, thing is once ave been driving and switch the ignition off, all is well, then 5 minutes later the cooling fans will start up and continue to run until the battery is flat..., so far have changed the cooling fan module but no joy, local garage is starting to think it may b dodgy ecu but a have mah doubts, any help? Thanks
Re: possessed fans!
...check your ecu box for water...
If you can't go to the track, bring the track to you.
Mugello Blue C5 RS6 Avant
Viper Tuning ECU/TCU
MTM Bimoto wheels 9,5 x 19 ET 30 LK 5x112 with 275/30/19 tyres
MTM exhaust system cat back 4-pipe with throttle valves in 2 pipes, control
Yellow Koni's
Porsche 959, gone but not forgotten.
Fight ALS disease https://www.youtube.com/watch?v=wGFDWTC8B8g
Mugello Blue C5 RS6 Avant
Viper Tuning ECU/TCU
MTM Bimoto wheels 9,5 x 19 ET 30 LK 5x112 with 275/30/19 tyres
MTM exhaust system cat back 4-pipe with throttle valves in 2 pipes, control
Yellow Koni's
Porsche 959, gone but not forgotten.
Fight ALS disease https://www.youtube.com/watch?v=wGFDWTC8B8g
Re: possessed fans!
Fan module wouldn't explain why both fans are running. The fans are independent and each has its own module.
Could be a dodgy temperature sender which is telling the ECU to keep the fans running. They can stay running for about 6 minutes after the engine is shut off. If your battery is weak, this could explain why it's being drained. If they both stay running longer than 10 minutes then you need to start investigating to see if the ECU is still powered up 15 mins after switching the engine off. If so then possibly there's a dodgy J271 relay, but I'm grasping at straws.
Could be a dodgy temperature sender which is telling the ECU to keep the fans running. They can stay running for about 6 minutes after the engine is shut off. If your battery is weak, this could explain why it's being drained. If they both stay running longer than 10 minutes then you need to start investigating to see if the ECU is still powered up 15 mins after switching the engine off. If so then possibly there's a dodgy J271 relay, but I'm grasping at straws.
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."
///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."
Re: possessed fans!
Thanks folks I'll keep u updated for others info in the future
Re: possessed fans!
If the fans stay running when you put the ignition back on run Vagcom and it will tell you the duty fan cycle and what is telling them to run. Oil temp and water temp and possibility air temp will run them with ignition off
Re: possessed fans!
Ok peeps this is where we are, j271 replaced and at present all is behaving but will keep u updated for future reference, but on the initial fault, all fans would stop if ignition was switched on and reset and the last time they did start up on there own was just a shade longer than 15 minutes after switching off so thanks for all the help and am off putting thrash it within an inch of its life for misbehaving, thanks again
Re: possessed fans!
Ok chaps and chapettes this s where I am, all has been well until tonight, switched off the car and all went silent bug yet again after the 15 minutes the fans fired up and ran full belt until I introduced the ignition and at which time they stopped, pulled the keys out and left it, again 15 mins later they restarted, so currently just disconnected the leads until further investigation, and further advice would help Ta:-)
Re: possessed fans!
any update on this...?
If you can't go to the track, bring the track to you.
Mugello Blue C5 RS6 Avant
Viper Tuning ECU/TCU
MTM Bimoto wheels 9,5 x 19 ET 30 LK 5x112 with 275/30/19 tyres
MTM exhaust system cat back 4-pipe with throttle valves in 2 pipes, control
Yellow Koni's
Porsche 959, gone but not forgotten.
Fight ALS disease https://www.youtube.com/watch?v=wGFDWTC8B8g
Mugello Blue C5 RS6 Avant
Viper Tuning ECU/TCU
MTM Bimoto wheels 9,5 x 19 ET 30 LK 5x112 with 275/30/19 tyres
MTM exhaust system cat back 4-pipe with throttle valves in 2 pipes, control
Yellow Koni's
Porsche 959, gone but not forgotten.
Fight ALS disease https://www.youtube.com/watch?v=wGFDWTC8B8g
Re: possessed fans!
My eyes hurt.
previous- Pug 205 gti, 306 gti, 309 gti Goodwood.
Audi S3, S4 V8 avant.
Porsche Macan Turbo.
Gone but NEVER forgotten - C5 RS6 Misano red avant.
Now - Empty garage
If you don't know where you're going, any road will take you there!
Audi S3, S4 V8 avant.
Porsche Macan Turbo.
Gone but NEVER forgotten - C5 RS6 Misano red avant.
Now - Empty garage
If you don't know where you're going, any road will take you there!
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