Thread: Thermo fan Constantly on

Originally Posted by Sharpie

Hi All,
The other day my TD5 D2 over heated beacuse of a hole in the alloy outlet on the engine block where the temp sensor sits and beacuse of that lost a fair bit of fluid from the system but the temp sensor didn't register a overheating problem (mainly because there was no fluid only steam passing the sensor . So upon replacement of the outlet flushed out the system and replaced with antiboil/antifreeze. Now here is the problem the thermo fans are now constantly on, there are no leaks anywhere or broken head gaskets, so should I asume the computer has been tripped in some way and has put the fan on all the time, and is the only way to reset this is to take it into LANDROVER for a reset?

Any help would be fantastic.

Oil in the injector harness will cause them to stay on, try your own reset by disconnecting the battery for 1/2 an hour, then reconnect and see if that helps.

Purge the system again, i had a similar problem and like you had the head gasket checked, there maybe still air in the system.

It could be a fault logged in the ECU, but from my experiences only 2 reasons they will be on is, air still in the system or oil in the injector harness, these are the only reasons that i know of, there maybe more but i haven't come across them as yet

Baz.

I had to get my ECU reset after headgasket/possible overheat/oil in the ECU.
Unfortunately its a stealer/specialist task needing the rovacom computer.
Andrew

Can anyone update this thread, my fans runs constantly after an overheat. Everything survived but the fan problem. No Rover techs in Kalgoorlie so I can only get it fixed if I go to Perth. Generally go the opposite way in this car.

Try CraigE via PM.
He has a Nanocom.
He is in Esperance,soon to be shifting to Newman.
He MAY be able to help.
Ive done 2,just a matter of clearing the fault register in the engine ecu with the Nanocom,2 min job.
I can do it but Im not local to Kal.
Andrew

Will the ECU clear if you disconnect the battery for a while?

Thanks Andy, I may just invest in one myself. 7 years old now and never had a puter plugged into it. Probably bursting at the seems with fault logs.

Originally Posted by Slunnie

Will the ECU clear if you disconnect the battery for a while?

I dont think so Slunnie.
Dirty130,try Craig,he is the type of bloke who will help you out if possible.
Andrew