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post #1 of 5 (permalink) Old Feb 4th, 2012, 10:48 PM Thread Starter
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Help!! Issues!!

Hi all! Am pretty new to this but am in need of some advice.
Im having a couple of issues with my 53 plate cooper s jcw. I've looked everywhere for answers but can't find anything.

Issue 1: my water temp gauge doesn't seem to get anywhere past a quarter. Never at the centre like it used to be. The heating in the car won't go hot no matter how far I drive. I had the Radiator replace about 3 months ago and it started happening about two months ago...

Issue 2: my runflat warning came on the other week, unchecked pressures, one was slightly out, so I topped up and tried to reset in the normal way, but the light wouldn't go out, no matter how far I drive. The pressures have stayed fine and I have tried a few time but the warning light never goes out!

Issue 3: when given a bit of a quick acceleration, I'm getting a noise coming from by the front passenger footwell that almost sounds like a gush of water or a crisp packet rattling in the air vents.. I have no leaks anywhere but it spuds really obvious.. Any ideas?


I'm new to the jcw scene, had her just over a year now, no problems till recently. Due for an oil service soon, how much can I expect to be paying? BMW garage scares me! Haha

Thanks
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post #2 of 5 (permalink) Old Feb 5th, 2012, 08:28 AM
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Hi,

I am no expert but can possibly help with one issue as I was having the exact same problems! With regards to temp gauge and heat this is the problem I had and it turned out to be the thermostat that was stuck open causing to much coolant to flow to the engine, you say you had a rad changed, was it ok after this? I just know that it must be bled properly to get all the air out the system, I had an air block and everytime I pressed the accelerator I could hear fluid swooshing .


Hope this helps
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post #3 of 5 (permalink) Old Feb 5th, 2012, 08:54 AM
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As said 1 & 3 sounds like possible airlock in the heater and thermostat stuck open, allowing overcooling of the engine as the coolant will run through radiator under all conditions when this happens. Replace thermostat and bleed system of air.

Runflat light is possibly a wheel sensor problem.
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post #4 of 5 (permalink) Old Feb 5th, 2012, 11:41 AM Thread Starter
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Thanks

Ah okay! That would make sense. I'm pretty sure it's been happening ever since then. Is it best to send it to BMW or back to the other garage who changed the rad? I don't want to get stung by BMW particularly!
Yeh I figured the runflat issue was a bit of a strange one.. Seen one other guy I here who mentioned it but never wrote back with a solution.
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post #5 of 5 (permalink) Old Feb 5th, 2012, 12:35 PM
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The previous garage who swapped the rad should easily be able to change the thermostat but they must bleed the system carefully of all air afterwards, as Mini's are prone to airlocks causing engine overheating and lack of much heat from circulating through the heater matrix.

Thermostat replacement:
Thermostat Replacement (MCS) - Forums
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