have been reading about recomendations on getting water pumps changed at 100k's service.
is this a good idea?
has anybody had any problems with a water pump on 3rd gen 3.5l?

If the waterpump fails at a later date, the timing belt will have to be removed again. This is fairly labour intensive and where the majority of costs lie in getting the timing belt changed anyway.

Yeah would be wise to get it done. As dave said, if it goes later then you have to take timing belt off again. Some people never have any probs at all with them but they have been known to fail or start leaking around the 100k mark.

They arn't expensive so better to do it now for peace of mind.

i had to replace mine in my old wagon (3L)

yes, is is a big job. i recomend getting it done when you get your timing belt done, you will save a stack of labour

thanks for the opions :)

not yet touch wood. But a taxi has done 421 thou i timing belt 12 spark plugs and few fuel pumps (pet only no gas) but the engine still goes like it had 120 thou or even less