The car's performance DOES vary with changes in weather as would be expected, even when the a/c if off ( which supports your earlier assumption of the Pod aiding in sucking in more hot/ cool under bonnet air)...Am struggling to come to terms with the fact that the vibration can only be caused by a worn out component or loose fitting (due to wear), and from what you guys say its either a 1. worn clutch, 2. loose/worn belt, 3. Worn bearing..am hoping the problem ends there as fixing an a/c can be quite costly.. I'll check for any other fault signs and let you know...do you know of any good a/c specialists (not necessarily subaru ones)... cheers

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Aint no stupid like right-wing stupid.....