Vehicle & Technical > Defender

Help with Overheating problems!

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vicskyline:
Hi all i have a 300tdi 90 last week the car overheated on m1 with a horse in back of trailer  :shocked: any way to cut a long story short the engine was cooked! so got another engine put it in at weekend, with new radiator, water pump, thermostat, and all new coolant etc, we have check for airlocks and she is still over heating, it only does it under load (ie with trailer or hard driving) we also checked the rad and that is stone cold after hard driving, are we missing something? we cant find any leaks and we have normal heat into cab, any help would be really appricated and we are stuck!
Thanks

Saffy:
was it really a brand new rad? because if internally block they stay stone cold liek you describe and if engine needs to use rad (up hill etc) it cooks instead.

vicskyline:
Yes it was a brand new rad we were told that you can get cheaper crappy ones, so we got a half sharp one and paid extra money!, this is what i dont understand to me it sounds like air lock not circulating and doesnt seem to pressurise either but no leaks and have check for air locks!

bogie:
Was the new lump any good?????????????

vicskyline:
Yes i can asume so, it is out of a 300tdi disco, i cant say its the lump as it was doing the exact same with last engine and old rad! its really strange :?

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