Small Update....
I've had to give up dealing with the Mayo dealer. After many emails and phonecalls they just don't seem to be interested in me. I feel like I'm asking them to change a wiper and they can't be bothered. That's all I'll say about it.
On Gerry's advice, I went to Finnegan's in Ballymahon yesterday. This was a much more satisfactory visit.
Unfortunately, the news is worse.
The compressor (fan) is screwed too. And they also told me that an electrical connector was corroded. The fumes\emissions from the exhaust have made their way back through the valves and corroded the inside of the compressor. Same reason the connector is corroded.
A new compressor is approx 800 + VAT. The two valves are approx 400 and 500, also + VAT.
I left Finnegan's nearly losing the will to live but it's only a car at the end of the day. Finnegan's will do their best on the price of the valves but I'm going to try and source a second hand compressor.
I've also emailed ecutek just to see what they have to say on that side of things.