Hi People noticed a lot of people have had problems with overheating. This
Doblo had the same and a new head fitted then promptly revved out of control and caught fire. anyone else had the same problem.
:devil:
Sounds more like a control fault. Over-revving is usually caused byt eh failure of the governor, or whatever bit of electronics replaces it. I suspect the fire was the result of that, not the overheating
There must be some sort of actuator, sensor or control that's around the head area, or an area that needs to be accessed for head replacement that gets damaged. Rather worrying though don't you think? With a vehicle that has an ECU surely there should be a rev limiter anyway?
Like T says the usual way for a diesel to overrev is for it to burn oil stuck in air trunking and so not run off the diesel at all. Its the only way the engine can remain running when the ignition is switched off. A fuel cut solenoid would cut the fuel if the ignition was switched off. If this failed the engine would simply run at max safe revs held there by the governor.