2 replies to this topic

[JhoffB4]

Hopefully I haven't skimmed past a thread with the same problem. I've been scrolling for a while now and can't find something the same.

 

Ok so here is my little dilemma.

 

02 B4 Liberty

 

Replaced Coolant Temp Sensor (located behind alternator FYI, just in case I can save someone the search like we had)

 

Put everything back on, took it for a quick 3 min drive around the block, did give it a bit of rev's, nothing outrageous.

 

Notices temp gauge sitting near the red (this has never happened, never gone above half, even on a 46 degree day, 3 hour road trip with a/c on whole time)

 

Realised thermo fans not turning on , turn a/c on, fans come on. So I believe it's not a problem with the fans/relays etc. The fans just aren't coming on even when gauge is showing above half (apart from when a/c is on). I can't even think if the fans started playing up before today... but it wasn't getting hot so, I assume they were fine.

 

Any one have any thoughts on what could be causing this? Air bubble(s) floating around somewhere messing with the info being sent to the computer?

Is there a separate sender unit? If so, we didn't touch that, just the sensor. 

 

Yes... I've tried turning the car off and on again

 

Ummmm I'm trying to think if I have missed anything out, the bro did most of it and was the one testing relay's etc.

 

My brain hurts

 

Cheers, Jenna

 

 

 

 

[tmh983]

are u sure u have the correct part number coolant temp sensor?

I think it could be one of three things:

1) faulty or incorrect sensor

2) u have accidently damaged the wiring loom

3) there is an air bubble in the cooling system

[JhoffB4]

Got part number from Subaru and ended up ordering a non Subaru one from else where that was a replacement for part number aa... something (can't remember number off top of my head)

New one looked the same, and fit so I could only assume it was correct.

I think it might be an idea to put the old one back in and see if the fans come back on, then I know if the new part was wrong/faulty.

Then suss the air bubble situation out.

Thanks