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Fans.

Posted: Mon Aug 11, 2014 10:09 am
by c0n13oX
Edit:

After about 30mns of driving my car starts to get warm, goes to about 3/4s and then the fans kick in. Not sure why its heating up. Any odeas would be mich appreciated

Re: Fans.

Posted: Mon Aug 11, 2014 12:18 pm
by Shhtuart
Did you top up the coolant after we changed the sensor? Also if that connector has come out it could be causing it.

Re: Fans.

Posted: Mon Aug 11, 2014 12:23 pm
by c0n13oX
Coolants all good, and the sensors all good too.

Re: Fans.

Posted: Mon Aug 11, 2014 12:31 pm
by Shhtuart
Did you bleed any air out of the system? Air can cause issues, just pull the radiator cap off and run the car
If you can see air bubbles coming through then you have a leak somewhere. The only other thing I can think is that the new sensor is sending the correct values to the ECU and it's kicking the fans on. How old is the thermostat is the car?

Re: Fans.

Posted: Mon Aug 11, 2014 12:34 pm
by c0n13oX
Will try air bleed. The thrmostat is only 7 months old.

Re: Fans.

Posted: Mon Aug 11, 2014 12:42 pm
by c0n13oX
Do I just leave it running till I see no more air bubbles?

Re: Fans.

Posted: Mon Aug 11, 2014 12:45 pm
by Shhtuart
Yes but seeing air bubbles is bad. Give it 10 to 15 mins max. If that doesn't clear it then there's a leak. Try raising the revs to 2k for a bit to help clear it.

Re: Fans.

Posted: Mon Aug 11, 2014 12:46 pm
by c0n13oX
Orright cheers. Will let you know how I go

Re: Fans.

Posted: Mon Aug 11, 2014 12:46 pm
by Shhtuart
Also give the radiator hoses a squeeze along the length of them to encourage any air along

Re: Fans.

Posted: Mon Aug 11, 2014 1:52 pm
by c0n13oX
No air bubbles that I saw.

Re: Fans.

Posted: Mon Aug 11, 2014 2:44 pm
by rock_it
Maybe the gauge is not reading accurately..

So when it is reading at 3/4, maybe it is actually 1/2 ... I remember Dan having that problem with his Barina..

Re: Fans.

Posted: Mon Aug 11, 2014 3:00 pm
by c0n13oX
Didnt fix it stuart.

Wouldnt that mean when its at 1/2 it would be cold?

Re: Fans.

Posted: Mon Aug 11, 2014 3:15 pm
by Shhtuart
Halfway is normal operating temperature. Anything over that and you've got a cooling issue. Unless the dash sensor is playing silly buggers.

Re: Fans.

Posted: Mon Aug 11, 2014 3:19 pm
by Shhtuart
The dash sensor isn't related to the the thermostat or the CTS so if the fans are kicking in its not the dash sensor at fault. Was it doing it before we changed the CTS?

Re: Fans.

Posted: Mon Aug 11, 2014 3:26 pm
by Shhtuart
Image

Should sit there

Re: Fans.

Posted: Mon Aug 11, 2014 3:30 pm
by c0n13oX
It was doing before changing the cts, yeah.

Re: Fans.

Posted: Mon Aug 11, 2014 3:34 pm
by Shhtuart
Are the upper and lower hoses flowing properly? Check they're both pressurized when its at normal temp. You could have a blockage. I had the fans kicking in all the time before I got a new radiator and changed the CTS.

Re: Fans.

Posted: Mon Aug 11, 2014 3:35 pm
by Shhtuart
Could be an electrical fault. Dodgy wiring or a stuck thermostat.

Re: Fans.

Posted: Mon Aug 11, 2014 4:07 pm
by c0n13oX
Ill check all that out after work. Cheers

Re: Fans.

Posted: Mon Aug 11, 2014 6:10 pm
by Daniel2019
rock_it wrote:Maybe the gauge is not reading accurately..

So when it is reading at 3/4, maybe it is actually 1/2 ... I remember Dan having that problem with his Barina..
Negative, barina was fine, gauge just went up and down with fan temp and gave accurate reading. I had it tested by local mechanic. Fans kicked in at around 98-100 deg and stayed on until 92 degrees, and gauge followed those temps.

Sounds like problem smurf had. Change temp sensor on gauge side, should do it.

Edit: but could also be blocked radiator/coolant sleeves/hoses, bad water pump, bad thermostat etc. And could also be ECU temp sensor.