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Early Holden Temperature Warning Lights
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Hi All
Does anybody know off hand at what actual temperature the red warning light as fitted to any early Holden 6 actually comes on at?
I can’t remember whether these come on when you are getting hot or when it is already really hot.
Cheers
Rick
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It should be in I did the maintenance manuals. If you can’t find it there I’ll check the features manual. |
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What model series are you asking about ?
The earlier cars have a lower temp rating than the later cars.
The switch-on temperature increased at the same time the radiator cap pressure increased.
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for the HK the "oops it's to late" light comes on at 239 degree F. Manual actually states when the light comes on the engine is seriously overheated so by the time the driver notices the light it's well and truly cooked.
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Just like the auto trans hot warning on most modern dual cab 4x4 with their fairytale claimed towing capacity. Rather than a temperate warning light they should be called “fluid turned black” light. |
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Originally Posted by: Dr Terry  What model series are you asking about ?
The earlier cars have a lower temp rating than the later cars.
The switch-on temperature increased at the same time the radiator cap pressure increased.
Dr Terry Hi Dr Terry Asking about HQ 202, but interested to know about other models as well. Cheers Rick
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Originally Posted by: HK1837 Just like the auto trans hot warning on most modern dual cab 4x4 with their fairytale claimed towing capacity. Rather than a temperate warning light they should be called “fluid turned black” light. Yep that’s a joke isn’t it. Why they don’t come standard with an oil cooler is beyond me. You couldn’t tow an empty box trailer behind a Hilux in the summer without the trans going into meltdown.
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Doesn’t even have to be summer. When my 2011 was a few hundred km old I fitted a proper trans temp gauge, one that reads the fluid temperature as it leaves the box to the front of the car. I towed my empty 7x5 trailer up my street. Temperature went to 120degC at the top of the street on a 20deg day. Took it home, took the trailer off and fitted a big aux cooler that week. After the cooler fitted fluid never even went over 100 and that was towing 2 tonnes at highway speeds up hills. And this is the good 2011 A750F 5spd auto, not the 4spd rubbish the diesels got.
The only time now I can make it get hot is either towing in D (should never do that) or trying to drive in 4x4H on sand, should always use 4x4L and make the engine work then the tranny stays far cooler as the torque converter isn’t working anywhere near as hard. |
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Yeah mine is the old 4 speed behind a diesel. I fitted a cooler not long ago as I had to tow a car on a trailer back from the Central Coast. It didn’t give me any drama at all, but prior with my bogie trailer loaded it was absolutely useless.
Lack of air flow over the cooler on the sand wouldn’t help.
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If the engine is doing it easy normally the converter is working hard. This is what I find on sand or towing. If the engine is just loping along the gearbox temp skyrockets. Drop it back a gear and make the engine rev and the tranny temp drops quickly. |
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Early Holden Temperature Warning Lights
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