I am having a problem with my Delica Starwagon Diesel Turbo. When the engine is kept at a fairly low rev range (around 2000rpm) the temperature stays fairly low. However, when I put the foot down a bit further and the turbo kicks in the water temperature starts climbing rapidly towqrds the top of the scale. I then have to pyull over, let the steam pressure decrease andf add more water to the system. There is no smell of diesel when I release the pressure (VERY carefully), no sign of oil on top of the water in the expansion tank and no mayonaising of the engine oil.

Am I right in assuming that this indicates that there is a problem somewhere around the throttle body? Is it an easy fix or am I looking at big bucks for the repair.

Hi just wondering if you have checked the obvious is there any fluid leaks? is the fan working? how about the thermostat?

Done all that. The van has sat in a barely moving queue for over 1/2 hour over the weekend without any temperature problems. I was also able to drive over 100km without overheating by keeping the revs below 2000 (speeds around 80-90kph). The fan is pushing plenty of air through and there are no leaks as i was able to drive for 3 days at local road speeds without losing any coolant. The thermostat is working as there are visible changes in the temperature needle indicationg the thermostat opening and closing.

it sounds like the radiator take it of and get it cleaned or get a new one if
it gets too hot you will need a new thermostat they go out of there range or worse