Heater problem - MINI Cooper Forum

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post #1 of 12 (permalink) Old Oct 12th, 2012, 01:22 PM Thread Starter
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DIY Heater problem

Hello guys

im new in this forum, and i know there is alot of old post about this heating problem, but mine is a little bit different

A few days ago i bought this mini cooper jcw 2003 and the car is running perfekt, everything was working just fine until it got night and the temperature was falling, then i turn on the heater and it was blowing cold air.
then i went to the mechanic he said it was the thermostat.

he changed the thermostat and also bleed the system. still no heat!
next thing he said, it must be the head gasket, but there was no oil in the water, no water in the oil. no smoke out of the exhaust.

when the car is driving on the highway for alonger period, then the heater is blowing a small amount of semi hot air out but it gets cold within a few minutes.

so my question is :
should i change the Head gasket or do you have any idea what might be the problem ?
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post #2 of 12 (permalink) Old Oct 12th, 2012, 04:41 PM
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I doubt it will be the head gasket.......what symptons makes them think it is?
More likely bleeding is still required, it takes time and patience, or heater matrix may be partially blocked inside (sse below)

Maybe worth reading this link:
2002 Cooper S lukewarm heater
http://www.mini2.com/forum/first-gen...rm-heater.html
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post #3 of 12 (permalink) Old Oct 12th, 2012, 04:41 PM
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A cooling system pressure test will tell if theres any leaks and the head gasket.
Air can be very hard to get out of a MINI cooling system, so thats the more probably cause?
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post #4 of 12 (permalink) Old Oct 17th, 2012, 02:56 PM Thread Starter
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thanks for your replies

some mechanics just dont know that heater problem could be other things than a broken thermostat or a bad headgasket

i think i will try to bleed the system more efficient this time!

do you guys have any good advice how to do it proper ?
apparently it's more complicated than other cars.

thanks for your time
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post #5 of 12 (permalink) Old Oct 17th, 2012, 04:56 PM
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Proper way is like the factory do it by using a vacuum machine, ha not a Dyson by the way.
Just keep trying using the bleed screws in the system, the air will probably find its way out after a few attempts.
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post #6 of 12 (permalink) Old Oct 17th, 2012, 06:41 PM
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There are some links on bleeding the Mini cooling system here:
Solving MINI Cooling Problems.......... - Forums
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post #7 of 12 (permalink) Old Oct 18th, 2012, 02:57 PM Thread Starter
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Haha
im acutally using a dyson at home, it works fine by the way


i will try to bleed the system one last time!
I hope it succeeds this time

thanks for the link it seems very helpful
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post #8 of 12 (permalink) Old Oct 28th, 2012, 07:44 PM
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I'm having the same problem with my r56,new thermostat coolent also bleed the system 4or5 times,the heater matrix does get very hot,should i change it??
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post #9 of 12 (permalink) Old Oct 29th, 2012, 10:54 PM
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I'v got hot air againnew heater matrix....
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post #10 of 12 (permalink) Old Nov 13th, 2012, 11:12 PM Thread Starter
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At last i found some time to fix the heating problem and yes its the damn Heater matrix again !

Thanks!
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post #11 of 12 (permalink) Old Mar 22nd, 2013, 09:10 PM
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how easy was it to change the heater matrix guys ? Did you inspect the old matrix after removal and see anything obvious as to why it wasnt heating up ??
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post #12 of 12 (permalink) Old Mar 23rd, 2013, 10:27 AM
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Quote:
Originally Posted by Schakal View Post
how easy was it to change the heater matrix guys ? Did you inspect the old matrix after removal and see anything obvious as to why it wasnt heating up ??
Heater Matrix Swap
Heater Matrix Swap - Forums

getting at the core!
http://www.mini2.com/forum/maintenan...ting-core.html
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