A/C system on 2001 Nissan Quest

I did recharge the refrigerant, check the pressure is OK. But only work for the back of the van, not in the front. What could be the problem.

1 answer
My van did the same thing, only the front stopped working and the back was ok. Upon advice of a friend I added more freon and it took a certain amount to get the front to start working again.....looking at the repair manual, the front has a valve that the rear does not so it seems the front requires more pressure to work properly. I would suggest you try adding some more freon.