in the engine compartment, it is on the passenger side fire wall, near the top. It is on the evaporator case.
The 1999 Oldsmobile Intrigue evaporator case can be found at the bottom of the engine compartment. You can follow the evaporator hose from the air conditioning compressor directly to the evaporator case.
inside evaporator case
More then likely, one of the electronic solenoids in the control pack on the front of the transmission case.
On the evaporator case.
New process 231 transfer case
The orfice tube is located in the evaporator inlet tube. There is also an expansion valve in the rear evaporator case.
The drain for the A/C is on the outside behind the rt front wheel against the firewall. Ther should be a small hole in the evaporator case. Don't use anything sharp to unclog it as the evaporator is just above it and it can be punctured.
It is below the cooler hoses on the front of the transmission case.
Under the hood on the evaporator case.
CAUTION: Some models are equipped with anti-theft-radio make sure you have the activation code before disconnecting battery * Have the AC system discharged * Disconnect negative battery cable * Working from the engine compartment side of the firewall,disconnect the air conditioning lines from the evaporator inlet and outlet pipes. * Inside the car,remove the dash * Remove the glove box supportbracket * Disconnect the thermostatic switch electrical connector and then diconnect the vacuum line between the door and the heater unit * Remove the upper and lower evaporator case mounting bolts * Remove the evaporator unit from the car * Remove the sponge pad which insulates the evaporator inlet and outlet pipes * Cut the foam that lines the opening on both sides of the evaporator case.Unclip the upper and lower evaporator cases and then separate the upper case from the lower case * Detach the thermostatic switch from the evaporator case and detach the thermistor mounting clip from the evaporator unit,and then remove the thermostatic switch and the thermistor as a single assembly * Remove the evaporator unit from the lower case and then remove the expansion valve assemby from the evaporator
You must remove the evaporator case from behind the glovebox and disassemble it. The expansion valve is mounted to the evaporator.