Engine temp too low? - MINI Cooper Forum

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post #1 of 4 (permalink) Old Dec 10th, 2012, 10:20 PM Thread Starter
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DIY Engine temp too low?

OK so I've read loads of threads concerning the cooling system and people either having issues with their Mini overheating or suspecting problems as the gauge doesn't move just seems to sit half way all the time.

BUT

None which describe what our R50 is showing.... I must admit its been like this for months but I thought after a recent service I'd look into it a bit more ANYWAY.... The temperature gauge now never seems to get to half way, usually sits about a quarter of the way sometimes creeps up to half when idle standing and when pulling off after a couple of minutes its back down to a quarter. Admittedly its better than its over heating, only adverse thing my missus has said its that it takes the heaters a little longer to come up to temperature but that's about it.

Any ideas?

Anything I should worry about? Thermostat issues?

thanks!


His: BMW 320D M Sport | Hers: 2001 R50 MINI Cooper
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post #2 of 4 (permalink) Old Dec 11th, 2012, 05:37 PM
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The standard gauge is not very accurate but it is possible to read the exact coolant temperature in the menu system of the speedo digital display or via a Scangauge or similar:
Odometer/Mileometer Digital Display information
Odometer/Mileometer Digital Display information - Forums

Scangauge 2
ScanGauge2 ScanGauge II Code Reader

Once you have the true temp readings, if the dash temp gauge and its sensor are confirmed correct, it may be down to something like thermostat or trapped air in the cooling system.
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post #3 of 4 (permalink) Old Dec 11th, 2012, 07:19 PM
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I fitted a scan gauge because the oem temp gauge is pants. Took about 5 mins to fit. I have velcro'd it to the controls under the stereo, the windows, door lock, etc, etc.

Now I know the exact temp of the coolant and in sitting traffic you know when the low speed fan kicks in. You never actually reach 106 degrees, when the fan is designed to kick in, because as soon as the fan kicks in it drops like a countdown timer to high nineties.

Peace of mind, after one blown head gasket and one new cylinder head.

Oh, I also fitted an aftermarket low speed fan resistor as mine had failed, like many others. Cost about 4.79 instead of the quoted 400 to replace the fan.
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post #4 of 4 (permalink) Old Dec 11th, 2012, 08:11 PM
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Me thinks Thermostat. Not expensive or difficult to replace
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