E38 climate suddenly heating

[fandor]

Hi,
Can someone help with a good advice ?

Stry when I use the Climate control after some time (and not always the same), the climate with no change of temperature settings starts to only blow very hot air in the car. it disapears only if I leave the car off for an hour or so and then goes back to normal.

When the car's climate work normaly I have the impression that a strong acceleration helps activate this strange phenomena (but I am not sure whether this is always the case)

Any one would have an idea where that could come from ?

Thanks a lot in advance

Best regards

[shogun]

Do a search or ask here, most E38 drivers are on this board
http://www.bimmerboard.com/forums/e38/