AC not cold

[Ziggy1621]

I've got a 92 NA 2+2 that I'm fixing up to sell (bought it from a kid who wasn't showing it any love). I've got the AC juiced, compressor is working and its blowing. The ac lines under the hood are freezing cold all the way to the firewall, but the air is warm. When I increase the temp (it is an auto temp setup on the dash) to max, it doesn't get warmer either. I'm guessing there is a door stuck for the warm/cold ratio. Any advice?

[BigTDogg (MA)]

Sounds like a heater core door issue. Have you checked the FSM section detailing the operation of the climate control system? It's rather lengthy, but detailed enough to help you out.

http://www.nicoclub.com/FSM/300zx/

[Ziggy1621]

I'll check it out! Thanks!