1884 RX-7 GSL, A/C has gone out! Have replaced the Sanden SD-575 compressor (reman.), new hoses, receiver/dryer, expansion valve & thermostatic switch. Flush cleaned the remaining system. Checked fan and all doors for proper operation. Reinstalled parts and 5.5 ozs of oil. Pulled vacuum, no leaks and charged system with 1.5 lbs 134A. Clutch engages, fan runs, but NO COLD AIR (A very, very little cool air)..........What is wrong???

You can jump it at the relay in the fuse panel under the hood.

There is a lot more to it than that. This is why the service bill is so high. Did you replace the Orifice tube or expansion valve? Did you replace the receiver/dryer? Did you flush the whole system out with solvent? Did you put the oil back in?

The proper steps are:

1. Remove any Freon with a recovery station.
2. Isolate and remove the compressor.
3. Remove and discard the receiver/dryer.
4. Remove and discard the orifice tube/expansion valve.
5. Flush the system with solvent and catch the discharge to check for rust and debris. If any are found, replace the whole system.
6. Replace the orifice tube / expansion valve with new one.
7. Replace the receiver/drier with new one.
8. Replace the oil in the system with fresh oil in the right amount.
9. Connect all compressor fittings on the compressor.
10. vacuum the unit down for at least 4 hours.
11. Recharge the system. Check performance and leaks.

AC compressor hose? If yes, confirm system is empty before disconnecting from the compressor and the next piece(dryer/expansion valve/etc). When installing new hose(s) , replace associated o-rings and the dryer too. Pull vacuum after everything is buttoned up. Then add few ounces of pag oil and they factory oz's of 134a.

There is no reason to replace the expansion valve unless it tested faulty (very rare). The receiver drier should be replaced any time that the system is opened, and then the system must be evacuated before recharging

You should not have to replace the expansion valve, but you should replace the receiver/dryer. Also, cut open the old dryer and test for acids, then carefully measure the quantity of oil and replace as needed.
You will need to evacuate the system and test for leaks, before recharging.

thermostat valve is located inside the thermostat housing, its where the the upper radiator hose is attached and clipped, you can remove that by taking off the two bolts that fastened the housing to the cylinder head, pull-out the old thermostat valve and put the new one...

Oiling in ac system is complicated.

why is the compresser being changed.

What I normally do is remove the receiver / dryer (which MUST reread > MUST be replaced when the system is opened) cut it open, check for chemical issues with litmus strip.

Typically, there is about one ounce in the reciever/dryer. If it is down to 1/2 ounce, for example, THE WHOLE system is down 50%.

The easiest way to get it right is to remove the expansion valve and flush the system, then all all new oil.

Really, this process shoudl be handled by a shop, with the right equipment to evacuate the moisture from the system.

If you are trying to save money, mount the new compressor and do not install the the reciever /dryer until immediately before the system gets evacated.

2002 is what I have. should be similar

Service Gauge Port Valves
The high-pressure service gauge port valve is located on the A/C receiver drier manifold and tube assembly.
The low pressure service gauge port valve is located on the manifold of the A/C compressor manifold and tube assembly at the A/C compressor.

Item Part Number Description 1 19860 A/C evaporator core 2 19849 Thermostatic expansion valve 3 19A834 Manifold and tube assembly—thermostatic expansion valve 4 19D850 Manifold and tube assembly—A/C compressor 5 19E762 A/C charge port valve (low side) 6 19E762 A/C pressure relief valve 7 19703 A/C compressor 8 19D594 A/C pressure transducer 9 19712 A/C condenser core 10 19D701 A/C charge port valve (high side) 11 19N585 Manifold and tube assembly—receiver drier 12 19959 Receiver drier 13 19C734 Sensor—evaporator air discharge temperature

My suppler suggested I try a new compressor instead of a rebuilt. That worked perfectly.

Thank you.

the expansion valve(Tx) is in the car at the inlet line to the evaporator
with compressors you best get advice from an ac specialist shop as the differences could be the gas that it pumps
some systems use R12 and others use R134a or later gas