heater doesn't work anymore

[jinos]

my 911sc's heater doesn't work anymore. It worked fine but now it doesn't even heat up at all. Does anyone know what the problem is? Thanks.

[tonythetarga]

Are you saying that when you pull the levers on the center tunnel that no heat comes out?? Does the fan blow cold air?
That is pretty odd as the heat is generated in the heat exchangers. You might have a broken cable that opens the doors that let heat in or the hose between the exchanger and the car has fallen off.
You need to look under the car. If the ducting is there, have someone move the levers and see if the door opens.

[5speed]

jinos, like we need alittle more detail on the problem. Is the car fully warmed up? Moving down the road or idling? Two heater levers by parking brake pulled up? If this is your SC do you have manual heat levers or auto heat? If manual heat does the heater booster fan come on when you pull the heat levers up?

[afterburn 549]

you need to be under car and have some one pull the levers and see if the cables are moving the air valves open and closed

[acapella8]

Flapper boxes can also be stuck in closed position. Also check heater relay in rear engine fuse compartment. If levers up, and no blower operation, check relay.