Renault 19 with gas and without heating

Hello, I have an R 19 with compressed natural gas and since they installed it, the heating does not work no longer pulls the air if the air forzator is but does not come hot, and when I see there is a cut hose, my question is if they have the water circulation system of R 19 to see where each hose goes

Hi Lucas, what they have done in the workshop where compressed natural gas were installed is to use the car heating circuit to avoid freezing of the gas regulator (that's why you have seen the trapicheo in the tubes).

The compressed natural gas just like the LPG, when it loses violently pressure in the regulator, reaches temperatures between -30ºC and -78ºC, when the regulator is cooled both, freezes the regulator membrane and begins to fail, creates frost and the same gas can come out in the form of liquid towards the engine causing a bad mixture and an engine failure.

What is done to avoid the freezing of the regulator and all these problems is to derive hot water from the engine to the regulator, on the one hand it is beneficial for the engine because it lowers about 10ºC to 15ºC the temperature, so even if you are in a jam it is difficult for the electrventillars to jump. And on the other hand it is good for the regulator because hot water prevents the system from freezing and fails.

Now, the fact of deriving hot engine from the engine, should not cancel the heating of the car, so we would have to go to the workshop and explain what the problem is and make the necessary modifications in the circuit to be able to heat the regulator without prejudice to the heating.

All the best.

Nothing more to say the teacher I already speak, tell him to go the hose to pass on both sides and have heating again, Hojo with the quality of the hoses in this case are very important.