Normal Coolant Temperature on a TDI300 - Defender Source
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  #1  
Old November 22nd, 2007, 02:20 PM
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EDWARD BAHAW
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Normal Coolant Temperature on a TDI300

Anyone knows what range is normal coolant temperature on a TDI 300.

I'm in trinidad where midday temperature is around 32 degrees celcius. The cyclinder head temperature at midday is arround 97 degrees in traffic with the A/C on.

Is this normal?

Some buddies of mine told me that 97 degrees celcius is within the normal range. I just want to know for sure.

The in dash temperature gauge stays in its normal position ie just under half.

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  #2  
Old November 22nd, 2007, 02:40 PM
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Mine runs 185-190 f most of the time unless I really flog it. I've got an actual gauge. Sounds like you temps are normal, especially for a hot climate.
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Old November 23rd, 2007, 07:20 AM
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I also thought that I'd mention that with the AC off the temperature would stay below 88 degrees celcius... even in traffic!

Both AC fans work but I was thinking of changing the stock fans and putting on two more powerful ones.

Has anyone tried this before?

I am even thinking about using some used fans from the Japanese salvage yards here. I know the radiator extractor fans at back of the radiator in Japanese cars are quite powerful. I was thinking about using them in front the AC condensor to achieve greater air flow and cooling. Of course I'll set it up so that the fans will be sending air inwards.

Does this sound like a feasible solution?

Or before I do all of that, I think I'll try using a water wetter!!!
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Old November 23rd, 2007, 07:55 AM
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Wait - whats the problem? Why are you trying to fix something which is normal?
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  #5  
Old November 23rd, 2007, 08:57 AM
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Point Taken! ... I'll keep monitoring the temperature though!
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Old November 23rd, 2007, 10:12 AM
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Of course, though I recommend getting a guage which has numbers on it!
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Old November 23rd, 2007, 12:50 PM
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Ok! I just went out for lunch at a nearby food court with the AC on and the temperature reached 105 degrees celcius ( I have a digital temperature sender and gauge installed). The analog in dash gauge remained on normal though!

Coolant was flowing out from the expansion tank. I'm sure there is something wrong now.

I switched her off and let her cool. Then I toped it off with water and bled out the system.

Its running fine again with the AC off but I haven't tried it with the AC on as yet.

I can't understand how the AC could cause this as both condensor fans are working.

Any thought guys?

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Old November 23rd, 2007, 02:02 PM
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Is it bled properly?

Anyone else care to chime in?

There are more diesel owners over at lr4x4.com.
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  #9  
Old November 23rd, 2007, 03:27 PM
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It is bled properly!

I was also wondering if this problem could be due to the thermostat which is set to open at 88 degrees celcius.

I think that's a bit on the high side!
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Old November 23rd, 2007, 06:57 PM
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Flush your radiator and system, put new quality coolant.
If it does not work, put a bigger radiator (there is a
recent thread about bigger radiator).
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  #11  
Old November 24th, 2007, 12:13 AM
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Bigger radiator. External oil cooler. If you send me a core I will have a radiator built for you.

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