temperature going up to redline in 2006 S - MINI Cooper Forum

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post #1 of 6 (permalink) Old May 12th, 2014, 04:17 AM Thread Starter
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temperature going up to redline in 2006 S

Hi Guys!
So I recently just bought a 2006 MINI cooper S (as in recent I mean just paid my first car payment yesterday). I am loving this car, but I have been having a bit of trouble with the coolant system. I noticed the other day that the temperature went to redline when I parked my car. I looked at the coolant the next morning and it was extremely low. I took it to precision tune and had the coolant flushed and refilled and they kept it overnight for leaks and weren't able to find any. I took it home and all was well until I was driving home tonight and even with it being cool out the temperature went almost to redline when I was driving (before it was only in idle and parked). I am so confused as to what this problem may be and I am really hoping its nothing serious. The fan was kicking on high before when the car was off for about 30 seconds to cool it down so I'm not really thinking that. I filled up the coolant and had that taken care of...so any ideas? I am new to MINI and a car dummy and I really am not looking to pay any expensive repairs on my first new(ish) car.
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post #2 of 6 (permalink) Old May 12th, 2014, 08:39 AM
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So has it's lost coolant again?

Check the condition of all hose, as at idle a split hose might not totally show itself until the engine is working at higher rpm's. Is there any tell tale signs of water lose around the header tank? Again at idle this might not show until the engine is working and the water system pressurises, also work checking the header tank cap.

You really need to make sure that the fans are kicking in properly and for long enough. Doubt it would be the thermostat as they are designed to fail in an open state.
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post #3 of 6 (permalink) Old May 12th, 2014, 09:16 AM
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Could be the water pump, common fault.
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post #4 of 6 (permalink) Old May 12th, 2014, 03:01 PM
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Hi ya

If could be a few things causing the problem with out seeing the car it's very hard to tell
Is it still loosing coolant that's the first thing if so how's much ?

You must make shore the system is bled properly and in car heater on full heat when bleeding the cooling system on these minis, or you will have problems. The right type coolant is a must to

If it's not loosing coolant but getting hot and over heating

You could have a bad thermostat
First stage cooling fan not working at 105deg c which would not be helped but the thermostat.
Totally shot supercharger belt or tensioner.
A bad supercharger, the water pump drive gears wear out and it does not run the water pump properly causing it to over heat.

If you are loosing coolant good places to look are
coolant expansion tank around the bonded joint
The gearbox case just below the thermostat housing the housing crack and leak.
Remove the engine under tray to check around the rad properly.

If you carry on driving the car and it keeps over heating you are going to damage the engine. My advice would also get a hydrocarbon check done on the coolant and keep an eye on your oil make shore it does not look like yogurt

This should give you some where to start
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post #5 of 6 (permalink) Old May 13th, 2014, 04:23 PM Thread Starter
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Hi Guys!
I was pretty worried about the car and was able to find a place nearby that does work in MINI. They immediately found the problem... thermostat housing was leaking coolant everywhere. They are fixing today and its going to be about $300 total. Sigh. Guess this is a pretty common problem with MINI which is relieving that it isn't just my car. Upsets me that the other place I took it "pressurized" it and couldn't find a leak. Will not be taking it back there!
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post #6 of 6 (permalink) Old May 13th, 2014, 04:32 PM
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Quote:
Originally Posted by caskey09 View Post
Hi Guys!
I was pretty worried about the car and was able to find a place nearby that does work in MINI. They immediately found the problem... thermostat housing was leaking coolant everywhere. They are fixing today and its going to be about $300 total. Sigh. Guess this is a pretty common problem with MINI which is relieving that it isn't just my car. Upsets me that the other place I took it "pressurized" it and couldn't find a leak. Will not be taking it back there!
Hi ya glad you found the problem :-)
Unfortunately I do not understand how these so called garages can miss these things, they must just panic when they see a mini and go blank.

Anyway when you get the car back just keep an eye on the coolant it may take a day or so for it to settle down and get the remaking air out the system.
Glad to here it's on the mend :-)
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