One day I found a nice puddle of coolant on the passangers side door :rant:

I ring my mechanic, he says its the heater coil and the dash needs to come out and the heater unit taken to get fixed/replaced.

Ive pulled the dash out and are up to removing the heating unit (I ****ing pray I can put this all back together)

Anyways look at this diagram

http://www.members.optushome.com.au/hyper24/pic.GIF

See number 12? I just pulled that off and it had a puddle of radiator coolant in it, so I can safely say its def' the heater unit thats buggered?

There is a tiny chance its running in from a loose hose fitting but i'd say 99% you've got a stuffed core (part 17) on your hands. Just be patient putting it back together and work slowly and it should all just fall into place. Fun aint it. :D

I had a guy test driving the car who was probably going to buy too when the problem happended.

Dont think ive ever been so frustrated with this car, thank god its going soon!

hmm sounds like a lack off coolant changes or wrong coolant good luck

CHeck out this link from the www.diamanteowners.com from the US

http://www.diamanteowners.com/forum/index.php?showtopic=3615


Will give you LOTS of info about this problem.