no air or heat....help!
 

on my 87' supra the air conditioning doesnt get cold enough to do anything in the summer and also the heat doesnt get hot in the winter. does anyone have any idea what might be causing this problem? i'm geting worried, in the summer i could just roll the windows down, but now in the winter i might be in trouble! lol

for the heater....replace the thermostat

as for the air conditioner....you might be low on freon

i was thinkin about changine the thermostate anyway so that will be good if it helps the heater. when i bought the car the guy said that there was a hole in one of the a/c lines so how would i go about testing that. that would probly be the reason that i would be low on freon.

find the line with the hole in it and replace it

anysugestions on how to find the line with the hole in it?

your heater problem is a broken valve that can be by-passed . i forget the details right now . the valve is passenger side (U.S) on the firewall it's one little swap of tubes and you'll get heat . research online you'll find it.
it's a vac switch and with no switch there's no hot water flowing into the heater core

A/C...if its still R12 freon, you probably can't get any from a parts house. You will probably need to take it to a shop. They can check out the system for about $50 (my shops price).

Heater...while engine is running, just unplug the vacuum line from the engine, going to the VSV (wires to it) by the heater water valve, then plug it into the heater valve. Valve should work, you'll see it move. Normal operation is that water always flows thru the heater core, except when the temp controls are set to 65*.

awsome...thanks guys i will get to workin on it and let ya know. then again who knows when that will be but it will happen.

Heater...while engine is running, just unplug the vacuum line from the engine, going to the VSV (wires to it) by the heater water valve, then plug it into the heater valve. Valve should work, you'll see it move. Normal operation is that water always flows thru the heater core, except when the temp controls are set to 65*.
Any pictures on this process?

No pictures. The valve is on the passenger side firewall` up high. 2 heater hoses go into it.