Sorry about the late response people, my computer had a sicky and i've had to reregister under 'ova 300' instead of rip it. my mechanic has found the cause of the problem, so he gets the coronas. he had checked all of the above suggestions and everything was fine. it is a problem in the wiring loom in engine bay. probably caused by 10 years of twin turbo heat. he hopefully will have it back to me next week. unfortunatley i will miss the cruise in Brizbane on sunday so i hope everyone has a top day. cheers Chris