Bit of update, the inside of the car is now dry after removing everything and leaving it out for a week in the fresh air. The sunroof problem is also resolved. As predicted it was easier said than done but the silly little elbows that the pipes had come out of are now in the bin, replaced by well connected and much longer pipes that lead all the way through the firewall and into the wheel well.
That's the good news.
Bad news is that the CEM did show signs of having been wet so gave it a good clean with contact cleaner but on giving the car a test drive after putting everything back, the problem with randomly shutting down is still there.
Logic says the CEM is the root of the problem (I know, I know), but how do you test it? There are many ECU test and repair companies that pop up with a google search, I'm just wondering if anyone has been down this route before and found a company they would recommend?
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