Overheating

[rd61]

Galaxy Mk2 (02) Tdi overheating. (150K) Suddenly overheated on Motorway. No appreciable water loss. Limp home. Checking this further and doesn't overheat straight away. Temp rises to the 90 and sits for awhile - which tells me there is water flow and thermostat working OK - but then climbs higher - especially with any load/acceleration.

First time noted that the radiator fans didn't seem to be running - so checking those out now. Does somone know which fuse covers their operation. If that's not it then I guess there maybe a head gasket problem.

Any help in diagnosis appreciated.

[seatkid]

Possibly water pump failure, I believe your year car the water pumps had the plastic impleller that detaches from the shafts. They still manage to pump a little aided with natural convection so would give the symptoms you describe.

[Scorpiorefugee]

A very common problem on these and many other modern motors is water pump rotor failure. It should be changed every time with the cam belt. With these, it is often possible to travel at low speeds or leave it ticking over without overheating. Perhaps not so in the current warm weather. Sadly, it's much about the same job to change it as fit a new cam belt.

 

Sorry Seatkid. Didn't spot your reply. Not been around for a while. I'm back cos the damn thing is misfiring. trying to find my way round the injector wiring.

Edited August 6, 2011 by Scorpiorefugee