hi, i have a problem with my heating, firstly the gauge in the car doesnt register when driving, only when sat still, and then it take ages to move, and secondly when driving the heaters are only ever warm, not hot, even after 30 mins driving, the expansion tank doesnt seem to hold much pressure either, it gets hot, but i can still unscrew cap and no steam etc...it doesnt use any oil or water, but i think mpg is down tho.....any ideas please?

 

thermostat?

 

could/does this sound like the oilcooler 1? or the other....obviously oil cooler 1 is cheaper!

 

If the temperature goes up when in traffic, then drops off again when moving, 100% thermostat.

 

there is 2 isnt there??? dya know which 1 it is most likely to be and the location please?

 

No idea i'm afraid, change the easiest one first then see what happens. I've got an inkling that its the later tdcis that have 2 stats, might be wrong though!

 

cheers il av a look....its a tddi though

 

As said sounds like thermostat (Stuck Open) to find the convential thermostat simply follow the top radiator hose back to the housing which is on the head. Don't know about the secondary thermostat on the Tddi, I should think it's something independant from the cooling and does something to the fuelling on the diesels?

Martin

 

sounds like that's right to me,thanks. the mpg is slightly down, il av a look once weathers a bit better, thanks

 

sorted new thermostat and housing fitted (as it was done!) 10 min job, lovely n warm now!!!