I bought my 911 about seven years ago. After a couple of years I
noticed that the heating, while fine in winter, wasn't shutting off
properly in the summer. I'd have all the fans off, or set to cold, and
all the cockpit vents closed, and still I'd get hot air pouring in
from the engine (which is impressive given the engine's in the boot).

I took it to a garage and they shook their heads, sucked their teeth
and said "sorry guv, the flaps which control the heat flowing into the
cockpit from the engine have stuck, and the lines which control them
are broken. To fix all that you'd need to take the engine out, so
we've just closed them for now."

This is all very well in the summer (no heat coming into cockpit), but
a nightmare in winter (no heat at all, whatever I do).

Were they right? Do they really need to take the engine out (quote
about a thousand pounds) just to fix the heater flaps?? Does anyone
know another way to fix this?

Many thanks,

CC