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[YZ250]

Changed the stat  and a 100% positive that its not leaking but im loosing coolant if I use the heating. But if I freeze my nuts off and dont use the heater I dont loose anything.... so am I right in thinking its the HBV

This was exactly what mine did when HBV went on it. I set the heater temp to low just to get me home. If I turned the heater up the water gushed out. 

I definately didn't have aircon on to stop it leaking. It was minus 4 outside when mine went and nearly minus 4 inside without the aircon being on. I turned heater to low setting to reduce water loss.

[skyblue]

i wouldnt go for a cheap one, they arent that expensive anyway tbh.

They are when you are skint  but thanks all , just needed to assure myself I was thinking the right way on the problem

[The Red Baron]

not just me then. ^^^

[The Red Baron]

i wouldnt go for a cheap one, they arent that expensive anyway tbh.

They are when you are skint  but thanks all , just needed to assure myself I was thinking the right way on the problem

have a look on vauxhallworldparts site.

[2woody]

don't understand the logic there - nothing happens to the HBV until yu turn the heating right down both sides AND turn on hte aircon. But even then the heater is still filled with coolant at 15psi or so.

[skyblue]

not just me then. ^^^

No mate but its that time of year I suppose and we all go spending crazy for some reason 

[skyblue]

i wouldnt go for a cheap one, they arent that expensive anyway tbh.

They are when you are skint  but thanks all , just needed to assure myself I was thinking the right way on the problem

have a look on vauxhallworldparts site.

There is a lad in farnbourgh ( that Ive used before) that has one for 12 quid posted but Im off to collect one in the morning now

[The Red Baron]

just looked on vauxhallworldparts, they dont even have them listed now.

[skyblue]

Local dealer wants 40 quid so I may just strech myself to one from there as its payday next wk

[YZ250]

don't understand the logic there - nothing happens to the HBV until yu turn the heating right down both sides AND turn on hte aircon. But even then the heater is still filled with coolant at 15psi or so.

Found this out by accident on my previous Omega V6. Used the car on a summers day and all was fine. It got chilly at night so the heater went up and water gushed out. Next day the sun was out so heater was set low. Very little water loss. Evening came, heater went up and water gushed out so it had to be heater related. Setting to low temp may slow down water loss until it goes completely but it does sometimes give you a fighting chance of getting the car home.

[skyblue]

don't understand the logic there - nothing happens to the HBV until yu turn the heating right down both sides AND turn on hte aircon. But even then the heater is still filled with coolant at 15psi or so.

Found this out by accident on my previous Omega V6. Used the car on a summers day and all was fine. It got chilly at night so the heater went up and water gushed out. Next day the sun was out so heater was set low. Very little water loss. Evening came, heater went up and water gushed out so it had to be heater related. Setting to low temp may slow down water loss until it goes completely but it does sometimes give you a fighting chance of getting the car home.

Thanks to you for taking the time to help me out... Thanks all... I will get this sorted and let you all knowhow it went with the new one fitted

[skyblue]

Update for this  question....... Changed the HBV  this morning and I now have a nice hot car with no leakage whats so ever... best thing thats happened for us this wk for sure 

Thanks again people