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2000 mini cooper S overheating

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Joined:Thu Oct 24, 2019 9:19 pm
Whats your location?:Cork
What Minis have you?:Classic Mini Cooper s 2000 reg
Bmw Mini cooper 2008
2000 mini cooper S overheating

Post by Terrybrennan76 » Tue Jan 11, 2022 12:13 pm

I have a problem trying to get to the root of this problem.
i have an unmodified mini cooper s 00 G 23 and it overheats and bubbles after a few miles driving .

i have
changed the thermostat
up graded the coolant .
replaced the water pump
checked the electrics on the fan and all ok .

oil is clean and fresh so i am not suspecting a head gasket. any ideas or anybody in the south of the ountry that might take a look .?


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Joined:Mon May 09, 2005 12:49 pm
Whats your location?:Roscommon
What Minis have you?:1967 Morris Cooper, 1967 Austin Mini auto, 1968 Wolseley Hornet x2, 1981 Clubman Estate

Re: 2000 mini cooper S overheating

Post by Billy » Tue Jan 11, 2022 1:27 pm


Long time no hear and great to see that you still have the Cooper. I've had a few Mpi's and there are two known problems with overheating:

1. The filler cap on the reservoir not maintaining pressure. A lot of overmarket caps were crap;
2. Part of the wiring loom was upgraded in later years but perhaps your 2000 already has that fix.

Try the filler cap first and see how you got on.


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