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[fred117]

i have change main parts but car get hot on short runs but ok onlong ones 200 gls omega 98

[Neil (Cardiff)]

Maybe head gasket starting to fail. Is the car loosing water at all?

[fred117]

on she not head bee change heater switch change and the state change

[Welung666]

When was the waterpump last changed?

[fred117]

about 9 month new one put on

[Welung666]

Is the coolant clean?
Does it smell of anything other than coolant?
When it's overheating are the radiator hoses hard as if pressurised or as normal and easily squeezed?

[fred117]

yes it clean and dose not smell and pipes are softbut not to soft

[Welung666]

Ok then, next.....

If stationary and it starts to get hot does the fan kick in... low speed first then a higher speed as it gets close to the 100 on the temp gauge?

[fred117]

fan kicks in 95/110 but dose not sped up on revs

[Welung666]

fan kicks in 95/110 but dose not sped up on revs

It won't, it'll come on slow speed then high speed as the temp gets close to 100°. Are the top and bottom radiator hoses both hot?

[fred117]

no just top bottem warm but when fan comes on temp goes write up then goes back down to 95

[Welung666]

no just top bottem warm but when fan comes on temp goes write up then goes back down to 95

Blocked rad then..... Back flush it a few times.

Take both hoses off and run a hose in one till it runs clear out of the other, swop over and do it the other way and repeat until the water is clear all the time. Reconnect the hoses, refill the system and try it again

[fred117]

done that but on joy got wers  not better

[tunnie]

done that but on joy got wers  not better

If it got worse, that suggests the rad is at fault, and it just moved the blockage along.

Take the rad out, put it on a level surface and fill with boiling water, then feel by hand on the rad for any 'cool' spots

[fred117]

i will try that thanks  fred