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Old 31st January 2020, 10:50   #2
clf
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MG ZT CDTi

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Quote:
Originally Posted by mgj11 View Post
Hi wondering if anyone has had this problem and found out why. I set the heat to say 24C it get hot then after about 30 minutes blows cold air, this happens on all settings Aircon, Econ, man and auto. The aircon runs cold when needed and seems to work fine.
The engine temp is steady at just under half way.

2.5 V6 190+
are all the vents cold or just the driver's upper ones. This is normal after the interior has reached its desired temp.

An airlock (or sludge) could cause this, has it been flushed/refilled recently? Or have you had any coolant loss?
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