Overheating problem

Post by **Wanderer** » Fri Dec 29, 2006 2:41 pm

cruising in the '93 1.6 G16b Vit wagon coming back from Gingin the other day, sitting on 100km with headwind (OK struggling) & aircon going & the temp gauge got up to 3/4!

the next day, checked all hoses & the radiator for leaks, replaced the thermostat, back flushed the cooling system & topped up with new coolant.

all sorted, i thought - drove down to Freo, aircon pumping & the temp gauge went straight back to 3/4!

i'm thinking the thermo fan isn't working maybe blown fuse but when i checked the owners manual it doesn't mention a specific fuse for the thermo fan.

any suggestions?

Post by **nicbeer** » Fri Dec 29, 2006 3:22 pm

There wont be a fuse as its a viscous fan - no electrics and also check your aircon fan whilst u are there. Leave it idling and it should start spinning when it heats up.

Nic

Post by **Wanderer** » Fri Dec 29, 2006 9:21 pm

thanks for the advice on the radiator fan, by aircon fan do you mean the factory fitted electric thermo fan attached to the front of the radiator?

Post by **nicbeer** » Fri Dec 29, 2006 10:00 pm

Yeh thats the one. if u need one i dont think i will need mine for the conversion.

Also may have a rad available.

Nic

Post by **Wanderer** » Sat Dec 30, 2006 9:47 pm

thanks for the advice & the offer!

spent about an hour today, checking all connections & cleaned all the bugs & crap out of the radiator & the aircon fan.....& all works fine now.

cheers

Post by **josh9465** » Thu Apr 12, 2007 7:47 pm

i am getting overheating problems too. i have air con too. it only really over heats when driving at 100km/h or 4wd crawling and when the temps are
35C +

i wonder if the stock sierra radiator isnt meant for having an air con in front of it and should be upgraded to a 3 core.

plus i have spotties infront. not sure if thats reducing the air flow even more.

Post by **built4thrashing** » Thu Apr 12, 2007 9:39 pm

pull it out and get a profesional to clean out the rad. You'd be suprised how much crap builds up in a rad over time.

My work ute was doing the same thing and it was all from a slight blockage in the rad. . water doesnt stay in rad long enough to cool.

Post by **Pep** » Fri Apr 13, 2007 7:35 am

Hey all

Had the same problem a couple of weekends ago at cruiser,
thought i'd done a head gasket, but turned out that the radiator was
over 60% cloged up, cost $90.00 to get it flushed out, now with new thermostat and cap it barely makes it to 1/4.

Pep

Post by **josh9465** » Fri Apr 13, 2007 8:30 pm

new radiator, new water pump, new thermostat, new head gasket.

Post by **Wanderer** » Sat Apr 14, 2007 4:29 pm

"radiator flushed" - do they use any chemicals or use high pressure water

are the cooling system cleaners avaliable at auto shops any good?

Post by **built4thrashing** » Sat Apr 14, 2007 6:18 pm

the ones you buy from auto shops are an in engine flush too and can damage welsh plugs and some will even eat at the alloy engine. best to have someone do it for you.

Post by **Wanderer** » Sat Apr 14, 2007 7:51 pm

thanks for the advice!

Post by **Pep** » Mon Apr 16, 2007 7:45 am

Wanderer wrote:"radiator flushed" - do they use any chemicals or use high pressure water

are the cooling system cleaners avaliable at auto shops any good?

Hi Wanderer
(Sorry for the late reply, not online over weekends)
They pulled my radiator apart and pushed all the shit out
using a wire than put it all back together again.

Pep

Post by **Wanderer** » Wed May 02, 2007 9:08 am

dropped the Vit off at Natrad in Osbourne Park yesterday to get the radiator serviced - 60% blocked!

noticed the difference driving home

Post by **Sandgroper71** » Wed May 02, 2007 6:03 pm

how much did that cost at natrad mine might also be blocked

Post by **Wanderer** » Thu May 03, 2007 6:27 pm

including pulling radiator out of Vit, replacing top tank, cleaning radiator, flushing system, testing thermostat & new coolant - $250.80

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