Thermo fans witha mind of there own

BrennyV · Post by **BrennyV** » Thu Jul 03, 2008 9:44 pm

Ok, my berty seems to be fairly good via the bizar fact my thermos both come on all the time and i cant seem to see any hotwires etc... anyone else had this problem?

its gen1s2 wagon

cheers
brenny

YouTube · Post by **El_Freddo** » Fri Jul 04, 2008 12:27 am

Is the Air Conditioner always switched on? This is the only factory measure that would run the thermos no matter what the temp is...

Bennie

AndrewT · Post by **AndrewT** » Fri Jul 04, 2008 12:31 am

Maybe see if you can find the relay to replace it. I've seen them stick in one position before. Might be stuck on.

steptoe · Post by **steptoe** » Fri Jul 04, 2008 9:55 am

are they ecu controlled ? In some Commodes it is a distress signal that something non related to cooling is wrong (GMH style of error code)

BrennyV · Post by **BrennyV** » Fri Jul 04, 2008 10:12 am

AndrewT wrote:Maybe see if you can find the relay to replace it. I've seen them stick in one position before. Might be stuck on.

i might give that a go. no idea what elese it could be.

and i did check the aircon was one of the 1st things i did

AndrewT · Post by **AndrewT** » Fri Jul 11, 2008 3:12 pm

Ive been researching a similar problem on another forum. it seems its very likely the water temp sensor might be faulty (emitting the wrong resistance). The ECU detects a weird signal and just puts the thermo fans on permanently to prevent the engine overheating. Usually doesn't spit the engine code.

iananita · Post by **iananita** » Fri Jul 11, 2008 3:40 pm

Check engine codes. If the engine temperature sensor is disconnected the fans run even with ignition on. Does this happen now?
Engine temp sensor cheap to buy but looks hard to remove under manifold.
I'm having a go at mine this weekend

AndrewT · Post by **AndrewT** » Fri Jul 11, 2008 4:21 pm

I just changed mine on EJ20G turbo, very difficult but can be done without removing inlet manifold. I've heard it's easier on an EJ22 but can't confirm that myself.

BrennyV · Post by **BrennyV** » Fri Jul 11, 2008 6:31 pm

ahh this could be the key! ill have to chat to you about this