Wow, I just looked and the whole dash needs to be removed.
I would try to back flush the valve. Whats wrong with the valve?
1998 GS300 210k; white for the wife- Bone stock.
1998 GS400 240k; black for me. BC Racing BR series Coilovers 10k/8k, Daizen control arm bushings.
1991 FJ80 235k; lifted and bumper-ed, ready for expedition.
ok, now I have to ask, what is an expansion valve, where is it and what does it do?
And don't tell me it's like the flux capacitor, because I'm not that gullible. OR am I?
A variable metering device that varies refrigerant flow based on cooling demand. As demand increases, the valve opens wider to permit more refrigerant into the evaporator. Once the demand has been satisfied, the valve opening is reduced to decrease flow. Cooling demand is monitored by a sensing bulb mounted on or near the evaporator.
Although there are a variety of A/C systems used in cars and light trucks, they are all generally classified according to the type of metering device they use. Consequently, an A/C system is either referred to as an orifice tube system or an expansion valve system.