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Hilux Turbo Diesel Overheating 1KZ-TE

Tech talk for Hilux

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Posts: 33
Joined: Fri Dec 03, 2004 9:21 pm
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Hilux Turbo Diesel Overheating 1KZ-TE

Post by wosat »

2002 3L TD Dual cab 1KZ-TE

While driving home today from camping(lightly loaded with aproxx 600Kg Camper),
the temp gauge was basicly going up and down like a yo-yo.
As soon as I hit any hills of any reasonabe length, the engine temp crept from 1/2 way on
the gauge to the red line.
It seems that as soon as the engine was asked to work, the temp climbed.
Coolant looks nice and red. No oil evident and no bubbles. Levels in the radiator and
overflow tank are fine.

I have only had this vehicle for three months and this was the first time I have towed with it.
This can't be normal can it?

Any ideas?

Cheers,
Brett
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Post by J Top »

Checks
1/ viscous fan hub, slipping when hot?
2/clogged radiator fins, leaves - dust - pollen - mud
3/clogged radiator tubes, when you overheat you stir up crap from the eng. block which can clog the rad.
4/head or gasket
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Post by Surfin Alec »

Not an auto is it? PM if it is as it may be the same probs as in Surfs with the 1KZ-TE and towing. It has to do with the auto cooler in the radiator being so dam efficient and blocking most of the outlet in the bottom of the radiator.

Alec
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Post by wosat »

Surfin Alec wrote:Not an auto is it? PM if it is as it may be the same probs as in Surfs with the 1KZ-TE and towing. It has to do with the auto cooler in the radiator being so dam efficient and blocking most of the outlet in the bottom of the radiator.

Alec
Nope. Manual :?
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Post by Zeyphly »

i was told by my friends down at the local jap import yard that on 1 kzt motors used for towing they always drill a few extra holes in the thermostat to help it cool under load
03 turbo twin cab hilux + 85 xtra cab 253, Have i ever said i love lockers?
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Post by sarg »

Not something simple like a stuffed radiator cap??. Start with the easy things first.
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Post by Slayer »

could be high boost levels?? ie a sticky waste gate on the turbo??...
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overheating

Post by CHILLI 2 »

Check the easy things 1st thermostat,fan,radiator if under normal load it stays cool but under harder conditions it doesn't it has to be 1 of the above probs if timing and fuel mixture is correct !!! could also be a hose collapsing!!!
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Post by dumbdunce »

local or import? how many km? does it smoke noticably under load? do you have boost and EGT gauges fitted? it is common for small, indirect injected engines with higher km to run hot under load because they overfuel very easily. It's not a great towing motor to start with, don't expect too much from it.
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