Hello,
I have:rolleyes: a leaking of antifreeze that goes inside my car in the passenger side. The strange thing is also that it leaks when the engine is on while it doesn't when is off!:confused:
Can somebody help me with this mystery?

It's very possible that the heater control valve needs replacing.

Hello,
I have:rolleyes: a leaking of antifreeze that goes inside my car in the passenger side. the strange thing is also that it leaks when the engine is on while it doesn't when is off!:confused:
can somebody help me with this mistery?
So why is the antifreeze leaking into the cabin? And my heater doesn't work either

On many cars, when the heater control valve fails, the antifreeze simply leaks on the passenger side. It's a mass produced item that is just prone to doing this. What year and make car do you have?

Its most likely the heater box or its just cloggred go to the port where the water comes out and stick a wire clothes hanger in the hole and see if its clogged