Guys,

I've just bought my first Audi, an A4 Avant 1.9 TDI Sport, which I love. Anyways, the day after I picked it up the Emission Control System light came on but went back off after about 3 or so hours and hasn't been back on since.

A mate of mine has access to a handheld diagnostic tester (Bosch KTS 200 if that helps) which came up with the following faults:

464a Solenoid valves for engine mounting. Short to B+
4500 Coolant temperature sensor open circuit/positive short.

I understand the coolant temp sensor is pretty common and easy enough to sort. My local garage has offered to fit one free while they do the cambelt and water pump.

My question's about the engine mount.....I understand its a hydraulic mount. Is there only one? If not, how do I know which one it is? (or is there only one that has a sensor fitted?? )

Also, as the lights now gone off.....is it worth bothering at all?? Could it just be a 'glitch' and there isn't actually anything wrong. I'm half tempted to have the work done anyway as the garage I bought it from has offered to pick up the bill!!

Thanks in advance