[Foxmoto28]

So I currently have all stock cooling system in my '94 GT.

I bought an aluminum 3 row radiator and am waiting for it to arrive.

My problem is when I start up the stang the A/C will blow somewhat cold but not as powerful nor as cold as I want it to. Radiator is constantly full of water+antifreeze.
I live in Texas, so heat is not a concern here haha.

When I get my radiator installed (also replacing the thermostat) will my problem be fixed or am I looking at replacing the blower or something like that?

I need a list of things to look at for a fix.


Also, back when I was driving my '83 bronco I had a A/C problem and bought a refrigerant kit for the lines but never used it. How do you tell if the coolant level is good in the lines so I don't put too much, if I decide to use it.

[Bullitt95]

It sounds like your AC system might need to be recharged with refrigerant.

[Foxmoto28]

Originally Posted by Bullitt95 It sounds like your AC system might need to be recharged with refrigerant.

Do you know where the orifice tube is located? I'm thinking about replacing it before I recharge.

[Foxmoto28]

I cannot seem to find what psi is needed for my system; does anyone know?

[94bossgt]

your rad has nothing to due with your a/c you need to get it charged with uv dye in it so that if there is a leak you or the tech that recharges it can find the leak with a black light

[94bossgt]

your car empty takes 34 oz to fill

[Silver281gt]

Mine blew cold as heck... Parked it thursday and sarted it monday and now it blows hot as heck.. Texas hot that is..

[Foxmoto28]

I thought it had something to do with the engine getting hot causing the a/c to loose its juice. Thanks for clearing that up.

I have the kit to get it recharged; plan on getting it done this weekend.

[Autotech]

I found the A/C pressure line that runs along the passenger side frame rail got to hot and busted after I installed 1 5/8 headers. I bought a new line from the factory and installed it upside down to keep it away from the headers, fits well and does not get in the way of anything like this.

It is good to use a vacuum pump to remove any air form the system before you temp to recharge it. Air Conditiong Troubleshooting and Repair Diagnostics

[Foxmoto28]

Where is high and low side?

Here's an awesome side to doing it. I found out that there's a screw on one of the sides (next to the air filter/radiator) and it was siliconed on. I'm not sure what to think about this?

[Puffy93]

there is no high or low side with r-134, that's only on r-12.

[Foxmoto28]

Originally Posted by Puffy93 there is no high or low side with r-134, that's only on r-12.

How can I tell if it's never been serviced? The guy who owned it before me didn't do too good of a job caring for the car.

[Puffy93]

Originally Posted by Foxmoto28 How can I tell if it's never been serviced? The guy who owned it before me didn't do too good of a job caring for the car.

there really isnt a definitive way to tell if its been serviced or not, if it liiks cleaner than the rest if the area or was marcks where a tool might have scratched or dented it then it has probably been serviced. after a couple years cars tend to lose their freon slowly so more than likely it just needs a recharge

[03SonicBoom]

Originally Posted by Puffy93 there is no high or low side with r-134, that's only on r-12.

WRONG WRONG WRONG!!!!!!!!!! Not trying to be an ass, just being brutally honest so no one reads what you wrote and taps into their high side port.

There is a high side and a low side. There HAS TO BE because that's how an air conditioner works. If there is no high/low side, the pressure is the same for the whole system. If the pressure is the same on the whole system, there's no way to cool the fluid. The whole thermodynamics of an A/C system don't work that way.

The fluid from the compressor to the expansion valve is considered high side (b/c it has high pressure). The expansion valve allows the fluid (R-12 AND R-134a) to expand and drops the pressure (and temperature). The fluid from the expansion valve back to the compressor is considered low side.

Somewhere on your car, there are two service ports. One is for the high side and the other is for the low side. The DIY recharge can will ONLY fit on the low side port. You don't want to mess with the high side port. You also need the compressor to be kicked on for the DIY recharge can.

[Foxmoto28]

Originally Posted by 03SonicBoom WRONG WRONG WRONG!!!!!!!!!! Not trying to be an ass, just being brutally honest so no one reads what you wrote and taps into their high side port. There is a high side and a low side. There HAS TO BE because that's how an air conditioner works. If there is no high/low side, the pressure is the same for the whole system. If the pressure is the same on the whole system, there's no way to cool the fluid. The whole thermodynamics of an A/C system don't work that way. The fluid from the compressor to the expansion valve is considered high side (b/c it has high pressure). The expansion valve allows the fluid (R-12 AND R-134a) to expand and drops the pressure (and temperature). The fluid from the expansion valve back to the compressor is considered low side. Somewhere on your car, there are two service ports. One is for the high side and the other is for the low side. The DIY recharge can will ONLY fit on the low side port. You don't want to mess with the high side port. You also need the compressor to be kicked on for the DIY recharge can.

That didn't sounds right to me about no side differences. I'm still not sure which one is which and the guy at the part store was confused himself

[03SonicBoom]

Originally Posted by Foxmoto28 That didn't sounds right to me about no side differences. I'm still not sure which one is which and the guy at the part store was confused himself

I can not speak specifically for your car as I don't have anything to look at. The high side port is usually between the dryer (canister about the size of a coke can) and expansion valve (usually near/on the firewall).

The low pressure port is usually pretty close high pressure port. The line it's on goes from the firewall to the compressor.

[ryanw]

Originally Posted by 03SonicBoom WRONG WRONG WRONG!!!!!!!!!! Not trying to be an ass, just being brutally honest so no one reads what you wrote and taps into their high side port. There is a high side and a low side. There HAS TO BE because that's how an air conditioner works. If there is no high/low side, the pressure is the same for the whole system. If the pressure is the same on the whole system, there's no way to cool the fluid. The whole thermodynamics of an A/C system don't work that way. The fluid from the compressor to the expansion valve is considered high side (b/c it has high pressure). The expansion valve allows the fluid (R-12 AND R-134a) to expand and drops the pressure (and temperature). The fluid from the expansion valve back to the compressor is considered low side. Somewhere on your car, there are two service ports. One is for the high side and the other is for the low side. The DIY recharge can will ONLY fit on the low side port. You don't want to mess with the high side port. You also need the compressor to be kicked on for the DIY recharge can.

PEOPLE IF YOU DONT FIND AND FIX YOUR FREON LEAK YOUR GOING TO HAVE TO RECHARGE YOUR SYSTEM ALL THE TIME. IM ALSO AN A/C SERVICE TECH, BUT FOR SINGLE AND MULTI FAMILY HOMES. WHEN WE HAVE A LEAK WE PRESSURE TEST OUR SYSTEMS WITH NITROGEN AND SOAP UP ALL FITTING UNTILL YOU FIND THE LEAK. HOPFULLY YOUR LEAK IS AT ONE OF YOU CONECTIONS AND NOT IN YOUR E-VAP COIL. BUT AFTER FIXING YOUR LEAK YOU NEED TO PULL A VACUUM. IF YOUR SYSTEM WAS EMPTY OR IF THERE ANY THING ELSE IN THERE BESIDES FREON. IM NOT SURE IF THATS HOW YOU FIND A LEAK IN AN AUTOMOTIVE A/C. IM SURE THE LAST GUY THAT COMMENTED KNOWS......

[ryanw]

Look for signs of oil on or near all A/C conection