That’s what I thought. But reading up it is an important part of the cooling system. Hot water is always going through the matrix. It’s only the flaps left and right that stop hot air coming into the car and regulated. The water to the matrix is not regulated at all and is constant

Someone has told me that a blocked heater matrix can cause overheating, do you know of this happening?

will do that today, thanks

disconnected the water pipes from the gas system, still loosing water and overheating, so put back together, gas solenoid seems ok Could this be a slipped liner, what would the symptoms be ?

I shut the gas off, took out a rather large bank loan and went for a long trip on petrol, same thing loosing coolant and boiled over, but I did not disconnect the water pipes to the gas regulator, that is now done and about to try again. Also Going to test The gas solenoid valve see if it does...

Could be my Problem !!! At last another avenue to explore. I have just bought a kit to pressurise eAch pot and see if air leaks back to Coolant circuit lines. I did pressurise the coolant system and it’s slowly leaking somewhere. Not on the floor.

If the gas valve solenoid is turned off when engine off. Then how did it pressurise the system overnight ?

Tanks. Wi try all that on Monday. Will let you all know

I had a very small gas leak. Even with the gas solenoid shut off. But Monday I will re direct the water away from The gas regulator. Thanks all

It has been suggested to me that the regulator that is water cooled maybe pressurising the water system because of a gas leak into the water system I don’t know whether this could happen but I am going to isolate the water system next week See if that makes a difference

Yes it does

I have tried 6 different motors on 3 different positions. Even new pots nothing. 2 different control panels. Nothing. Power getting to board in pins 1 2 3 and 8 on white plug. I just don’t know where to go from here

I need this car on the road. As my other one is going into the shop to investigate overheating. I suspect head gasket. As tney were only done a few months ago he is ha big or bavk. He se I need this on the road ASAP. I agree with your comment but I’m only giving up for now what was your problem...

I give up. Spent 4 days on this. So putting switches in There no Rhyme or reason to this everything checked out power where there should be power new potentiometer is I control board from a car I know is working and it still doesn’t work so I’m putting three switches in

I have a fault come up on the nanocom evolution, it reads right blend motor potentiometer feed back circuit has a fault So I swapped out the right blend motor with another one, cleared the fault, ..... same fault came up, so I put another blend motor in there, cleared the fault. same...

Ok, found this out, and some wiring diagrams are confusing in the pin numbers, that's what threw me The correct pin numbers are with the catch facing you and looking down on the wire side 9 10 11 12 13 14 15 16 1,2 3 4 5 6 7 8 1= S Grey 2= RB Red Black 3= Blank Not Used 4= S Grey...

Thanks

I have replaced all the potentiometers in my blend motors BUT as they were taken out WAY before Christmas I cant remember what blend motor goes where. There are three motors as you all know, with the main cables coloured BLUE, BLUE and GREY I did make a note of which went where and even take...

I am giving this a rest for a day, have another problem with the HEVAC on my other p38 2.5 Diesel 1998 I will update this to let people know Thanks to all

ok couple of tests done here, 1 put new thermostat in, after replacing with new, fan clutch, pump, thermostat to top rad hose (as i broke the T) & cap,l go for a drive, boils over within a few miles, get back no water in header tank !! 2 put old thermostat back in and keep it open, just been...