Quote:
Originally Posted by MEX
I think your problem is that the air recirculation flap is stuck in the closed position.
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Absolutely - first thing to check.
http://www.sjmautotechnik.com/troubl...ac.html#recirc
Also remove the cover from the waterbox and check the drains aren't blocked with leaves.
I think I've known about a dozen people over the years who've assumed it's the heater matrix, girded their loins (bastard of a Job on a Type 44) and found the drains were blocked.