Weird heater issues

[Mannyg60]

Hi everyone

wondering if anyone can shed any light on my issue. I had an issue before of losing coolant slowly and I thought I had solved it by replacing a pipe that has some coolant seepage. All was okay and I didn’t use the heater in summer, anyway, now it’s getting colder, I switched the heater on and cranked up the temperature so warm air blows out and it smelled a bit weird in the car and the windscreen started to mist up. I figured it may have been a bit of damp in the car and thought nothing of it, however the coolant level had dropped over a week or so, making the low coolant light come on.

my question is, whilst it’s blowing out cold air, it’s fine but when I turn it up so its warm air, it smells funny and the windscreen mists up. Is there a valve or something that opens up to the heater matrix allowing hot water to come through causing a leak in the heater matrix?

Really strange

Thank you in advance

 

[rafletcher]

Yes, the meater matrix has hot engine coolant fed through it for heating purposes, and it's possible the matrix, or the diverter valve (just like you have in a central heating system) has sprung a leak.

I actuall had that happen whilst driving an old Lancia, felt a sharp pain in my clutch foot, turned out to be coolant dripping from the diverter valve into the footwell. That, being winter in Aberdeen, meant a VERY rapid misting up os my car!

 

[Mannyg60]

Yes, the meater matrix has hot engine coolant fed through it for heating purposes, and it's possible the matrix, or the diverter valve (just like you have in a central heating system) has sprung a leak.

I actuall had that happen whilst driving an old Lancia, felt a sharp pain in my clutch foot, turned out to be coolant dripping from the diverter valve into the footwell. That, being winter in Aberdeen, meant a VERY rapid misting up os my car!

Thank you. Sounds like it’s going to be dashboard out job