Thanks for the reply JasperJasper5 wrote:The tension has to be set wrong in the first place. Heat could alter the tension making it too tight then eventually the water pump bearing fails from being under too much pressure.
I've repaired this situation a few times over the years.
Some people do not allow the tensioner pulley to turn after tensioning the belt...you must set it so that the tensioner pulley can be turned with slight resistance from the belt....if you can't turn the tensioner pulley after tensioning it's too tight!
I've done more than 60 of these timing belts.
It makes a lot of sense now, since the belt was the first time it had been done for a long time, as well as water pump. If they just did the tension and then didn't allow for that, explains why first water pump died and for all this trouble. I'll see what they say when I head there tomorrow. Failing that, will need to find somewhere that could help out, as a job to do on the car... how complicated will it be? I understand that the timing belt be be hard to get access too, just thinking if I go to another garage they may end up asking stupid prices just to actually "diagnose". I will see what original garage say first and take from there.