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Mat Becroft
Newbie
Nsw
Uzz30 Soarer

Posts: 1
Reg: 10-2013

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Sunday, November 10, 2013 - 07:25 am, by:  Mat Becroft (Xeight) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Ok, so I have a uzz30 and I am having overheating issues... I have never had it hit H on the gauge however it has come close. I always pull over and cool it down ASAP.

The car seems fine unless there is a bit of heavy acceleration or extensive high speed driving (30-40km on the freeway at 110kph-120kph)

so far I have done a radiator flush, replaced the thermostat with a new genuine Toyota item, and filled it with Toyota red coolant.

After finding out that when I bleed the system I was in fact doing it wrong... From what I can figure out is the 17mm bolt is where it needs to be filled from when the overflow is empty. This will push out at much air from the system as possible and fill the overflow to the correct level... Is this the correct way to do it? Is it best to do it first with the engine off then start it to get the last bit of air out? Or keep it running the whole time?

Other issues I think May cause the problem is possibly the radiator cap not holding enough pressure, water pump not pumping adequately, radiator partially blocked or head gasket... (Not showing any signs of head gasket issues that I can see). Any info or advice would be greatly appreciated.
Daniel Marshall
DieHard
QLD
V8 UZZ31 X6 jzz30x1

Posts: 526
Reg: 07-2011

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Sunday, November 10, 2013 - 03:07 pm, by:  Daniel Marshall (Ydass) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Yes crack the 17mm nut bleed through there.
Make sure heaters are on max.
Top up regularly.
Running you should notice a current with the water flow so you have an idea the water pump is working.
You can put a bottle in the bleed hole with the bottom cut of like a funnel and check for bubbles found this a great way of making sure nones in the system.

I've heard of many stories of soarers not being bled properly and giving these symptoms.

It could be the auto not cooling enough as well I'd be getting the radiator tested as I think you'll find this your problem. Which will lead to other failures.
Paul Drane
Goo Roo
QLD
V8 Limited

Posts: 1347
Reg: 07-2005

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Sunday, November 10, 2013 - 08:14 pm, by:  Paul Drane (Paulwd) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

mine had similar symptoms a while back, run normal, give it a bit and would get hot, radiator seemed to flow OK, but was blocked enough to reduce the flow and not allow enough cooling and would get hot, then would come back to normal temp. New radiator same way of driving, never had another issue.
Ross Pesina
DieHard
Vic
Soarer V8, Soarer T, Soarer TT, Supra TT.

Posts: 813
Reg: 08-2006

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Sunday, November 10, 2013 - 10:24 pm, by:  Ross Pesina (Ross79) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I had similar problems, took me two weeks of topping up messing around to get it right. Follow Daniel's instructions and it should stop your overheating problems.
Mat Becroft
Newbie
Nsw
Uzz30 Soarer

Posts: 2
Reg: 10-2013

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Monday, November 11, 2013 - 06:23 pm, by:  Mat Becroft (Xeight) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

How do I know if the water pump is not working correctly?
Tom Richards
Goo Roo
nsw
V8

Posts: 1740
Reg: 08-2005

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Tuesday, November 12, 2013 - 06:29 am, by:  Tom Richards (Tomr) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

as daniel has said above, you can see the water flow when the 17mm bolt is removed. Follow daniels instructions to fill/bleed the system
Rob Charles
Tinkerer
Victoria
v8

Posts: 7
Reg: 07-2014

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Thursday, July 24, 2014 - 03:44 pm, by:  Rob Charles (Pearl_white) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Take it to a radiator shop.
Your garden hose is not strong enough for flushing rads - in general.

O_o

$100 bux and have a proper flush and they will even know what the issue with temp gauge is :-)


- went through this last year with Ford. Flushed radiator 3-4 times and bled the thing over n over.
Took rad to shop, was totally knackered - eventhough I thought it was flushing with garden hose.
The rad shop uses high pressure water - garden hose is weak.
Also - buy a new radiator cap - it's 20 years old now afterall , and only costs $10 -

Good luck :-)
Rob Charles
Tinkerer
Victoria
v8

Posts: 8
Reg: 07-2014

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Thursday, July 24, 2014 - 03:48 pm, by:  Rob Charles (Pearl_white) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Also, you say you filled it with red coolant...
Did you use a 100% red mix, or a 50/50 water mix ?


O_o

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