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[tunnie]

i meant to say i was confused by it not him lol
is it right though at once the Hg goes once on an engine, its likely to fail again even after a repair? or should the car be fine aslong as i look after the coolant?

If its repaired right, it should be as good as new.

The problem comes if the engine overheated drastically, therefore warped the head. If its not skimmed and HG replaced, then yes it will fail again.

Skimming is only needed if it drastically over heated....

[portomega]

As far as i could tell it hadnt overheated but i was having trouble with my temp needle on the dash , as sometimes it would just sit at 0 and not move for the first 10-15 miles then all of a sudden jump upto 90. He said hes chaging the thermosat on it though, so that should stop any overheating problems in future shouldnt it?

[tunnie]

could be unrelated, and a dash problem. But as its unknown, i would prob have the head skimmed.

[portomega]

yeah he said hes having it skimmed just as a precaution 

[Abiton]

As far as i could tell it hadnt overheated but i was having trouble with my temp needle on the dash , as sometimes it would just sit at 0 and not move for the first 10-15 miles then all of a sudden jump upto 90. He said hes chaging the thermosat on it though, so that should stop any overheating problems in future shouldnt it?

Sounds like a bad connection to the gauge sender.  It's a single wire spade receptacle sliding onto a 'pinhead' type feature on the sender.  Back of the head on the chunk that the EGR mounts onto (and DIS on the 2.0). Very 'unprotected' against the atmosphere IMO.  While the head's off, get your mechanic to give the sender contact a clean-up, and give the spade receptacle on the loom a little squeeze in, and clean-up and vaseline too. 

[portomega]

cheers i'll give him a ring and make sure he sorts that out too