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Radiator Fans Staying On

Posted: Mon May 27, 2019 1:23 pm
by mmm24v
Had to pop into work this am,only a short drive (15 mins)
but after pulling up the radiator fans just wouldn't go off
Unplugged the driver side fan for now but obviously I'd like to solve the problem properly,I checked the coolant levels after work which were fine so I'm guessing it must be a faulty temperature sensor? Thanks people ;)

Re: Radiator Fans Staying On

Posted: Mon May 27, 2019 2:04 pm
by paulinpoole
im no techy,but what ive read before,TPS may need slight adjustment or maybe,or as you said the temperature sensor (not sender) playing up :)

Re: Radiator Fans Staying On

Posted: Mon May 27, 2019 2:06 pm
by jrh
I thought they were meant to stay on until the temp dropped, even if the ignition was switched off ?

Re: Radiator Fans Staying On

Posted: Tue May 28, 2019 4:43 pm
by Scooby
I'm sure they stay on if the temp is too high.

If coolant is OK, was the temp sensor higher than normal?

If not, it could be a relay issue.
24v? If so, both relays at the front by the engine bay fuse box control the fans, so one could be sticking.

Re: Radiator Fans Staying On

Posted: Tue May 28, 2019 4:57 pm
by ICKLE
I think they are all correct above Adam I'm pretty sure the fan stays in untill its cooled......I'm sure Jon g will know and be along soon ..

Re: Radiator Fans Staying On

Posted: Tue May 28, 2019 7:35 pm
by ICKLE
I stand corrected the fans are not supposed to stay on after the the car is turned off ;)

Re: Radiator Fans Staying On

Posted: Tue May 28, 2019 8:01 pm
by mmm24v
Temperature gauge hardly moved in the 15 min trip
As said the fans usually switch off with the engine
Will look into the potential relay issue first,cheers

Re: Radiator Fans Staying On

Posted: Wed May 29, 2019 4:15 pm
by Jon G 24V
Hey Adam.

Just to add that if it is a Sensor that's gone bad it will be the Management Temp Sensor (Plug Connector) and not the Gauge Sensor (Spade Connector) that needs to be replaced ;)

Re: Radiator Fans Staying On

Posted: Wed May 29, 2019 5:17 pm
by cpt black
If you get stuck Adam bring it down Sunday and I will have a look got
some spares
Kev

Re: Radiator Fans Staying On

Posted: Thu May 30, 2019 9:09 am
by mmm24v
Thanks as always gentlemen,with your help I'll get there
Where would be the best place to source the sensor?
(Short of raiding Kev's stash of spares) Cheers