1997 geo prizm the AC blows air out at 80 degrees, I had the pressures checked and they are at the proper pressure, the high pressure line is warm to hot but the low pressure line is just cool, the compressor seems the be working fine. any sugestions?

Check the doors in heater/ac box sounds like it is working back and forward between the hot and cold vent. Can't remember if they are vacuum operated or not.

There are a couple of high pressure lines in your a/c system. The high pressure side usually hovers around 200-225 psi on warm days so the lines cannot be spliced. The system, by law, must be recovered and evacuated before any repair can be made. I'm sorry to tell you but this is not a repair that can be done at home in your garage unless you have a Freon recovery and evacuation machine at home.

You probably replace the wrong switch. I believe the high pressure switch is mounted in the back of the compressor. Pull the plug and jump it. If it works, replace the switch. I don't recommend you leave the jumper in the plug. If it the A/C pressure is to high, you could blow lines and such. Costing you a lot of money.

which enigne? post size, 1.6L
1: bad spark do the 60k tuneup now.?
2: too high fuel pressure, measure the pressure.with a gauge.
3: injector leaks. (lots of tests , ask)
4: fuel pressure regulator bad and causes #2
5: use Wide open throttle (WOT) to clear any flooding.

alldata.com has the spec. on fuel pressure, look there or ask.

It does not have one, and if it did it would not make it blow warm air, just less air. Have the freon charge checked in the AC system for proper pressures, would be a good place to start, & check to see if the AC compressor is kicking in. I hope this helps.

check the refrigerant level. The compressor is running until the low pressure or high pressure switch switch cuts it off.

Running the unit without enough refrigerant will damage the compressor because the lubricating oil is dissolved in the refrigerant. This is the reason for the low pressure switch cut off--to protect the compressor from damage.

If pressure gets too high, the compressor seals will blow. Thus the reason for the high pressure switch. Too much refrigerant or too much air in the system (due to a leak) will cause high pressures.

If refrigerant level appears to be correct, then suspect trapped air from a leak causing a high pressure cut-off. If refrigerant is low, suspect a leak causing a low pressure cut-off.

Turn on A/C to MAX and check to make sure the a/c clutch is engaged. If not, check fuses and relays. Also your system might be overcharged enabling the high pressure switch.

sounds liike a fuel problem, turn key on without starting listen for fuel pump kicking on if it does now check the connections at the pump/fuse if it is kicking on the you can check the fuel pressure by checking the little valve on the fuel rail next to the intake looks just like the air valve on your tires if there is no pressure then check fuel filter.

what makes u say ur ac refrigerant has a blocked passage? check the low pressure line by touching it with ur hand while ac is running/ it has to be freezing cold/ if not cooling it means ur compressor is weak and or refrigerant is low/ high pressure line is normally hot/ check ac magnetic clutch operation must engage when ac switch is on and disengage when ac is turned off/ check ac condenser must be blocked and needs cleaning....

This most likely is not a problem, if the ac blows cold air.... sorry but it is physics.

If you still think something is wrong, I would need 4 things, temp in front of radiator, temp, at center ac vent when on high, and the AC low and high pressure readings.

Long story short, or saving money....fact is the ac typically does not work if over or under filled...

The load is what it takes, and if you had tons of horsepower you would notice it less, but hey, you are cooling, so ...sounds normal to me.

Doc