Over heating 300tdi

Jon C · Oct 2, 2011

Hi everyone.

At long last signed up as I need your help please.

Got a 300tdi that over heats under load

Any ideas???

This is what i have done so far (in order).

New water pump & stat
Flushed system (including the rad)
New electric fan
New head gasket!!!

And now I have just had a recon engine fitted and still it starts to cook up under load????

Any ideas anyone.please?

Thanks

sible88 · Oct 2, 2011

Have you got any kinks in your pipework?
What condition is your rad?
Is the rad blocked with mud not allowing air to pass through?

Does she smoke under load?

Jon C · Oct 2, 2011

Thanks for the reply.

Pipes are all good.
Rad is in good condition, flushed through and cleaned on the outside.
No smoke either.

jamesmartin · Oct 2, 2011

you can only say rad is good after feeling its hot all over core when engune up to temp ,if its not hot all over engine will overheat

wiltshire landyman · Oct 2, 2011

take a good look at yr rad again clean with a hosepipe and make sure water passes thru all over

i cleaned and cleaned my rad and thought it was spotless but still ran very hot

this is what i found when i moved the oil cooler up a bit to look

Jon C · Oct 2, 2011

Thanks guys.

Will take another look but I took the rad out to clean it so I'm quite sure I didn't miss any dirt.

I will try the hot touch over it tomorrow as that is something I've not tried.:doh:

wiltshire landyman · Oct 2, 2011

Jon C said:
Hi everyone.

At long last signed up as I need your help please.

Got a 300tdi that over heats under load Any ideas???

This is what i have done so far (in order).

New water pump & stat
Flushed system (including the rad)
New electric fan
New head gasket!!!

And now I have just had a recon engine fitted and still it starts to cook up under load????

Any ideas anyone.please?

Thanks

could it just be a faulty guage and not actually heating up that much

sible88 · Oct 2, 2011

I have a brand new rad and mine isn't hot all over!?!?!
Can't remember which way round but it's hot at top/bottom and cooler at bottom/top

jamesmartin · Oct 2, 2011

may well be cooler at bottom but cold parts indicate no coolant flow ,300 rad,is well known problem especially as fills and empties on same side

Jon C · Oct 2, 2011

Don't think its the gauge as the last time it boiled up it really boiled up, new engine needed.

Jon C · Oct 4, 2011

Checked out the rad and a cold spot found:doh:

Looks like a new rad will be on its way to me.

Thanks for the help people, will let you know if it fixes the problem

elsie · Oct 4, 2011

rad issue , for sure .

Over heating 300tdi

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