OK so its getting to be really hot during the day here in O'Fallon, MO. While attending tech school in my last year I came to find that my high side AC hose has a leak. I did the leak test and know EXACTLY where the leak is, but my problem is how do I know what hose to buy. All the ones I have looked at don't specify if they are low or high side. Some say liquid side, and I know that when you charge a system with liquid it goes to the low side so would this the other hose I am looking at is the high side? 2001 F150 4.6L XLT 4x4 Off Road

Thanks.

 

A/C Cycle: 1. Compressor (LP gas in / HP gas out); 2. Condenser (HP gas in / HP Liquid out); 3. TXV/TEV/Expansion Device (HP Liquid in / LP Liquid & Gas out); 4. Evaporator (LP Liquid & Gas in / LP gas out); 1. Compressor (LP gas in / HP gas out); etc. HP or High Pressure is the High Side; LP or Low Pressure is the Low Side. I also specified when the refrigerant is a liquid - between the condenser out and expansion device in. Good luck!

 

Im still having trouble figuring out what hose to buy. Is this it?http://www.autopartswarehouse.com/sk...PD4811519.html

Thanks

 

The hose assembly you're referencing is for both the high and low side (hence, why you see two hoses coming out of that aluminum manifold that bolts to the compressor). Based on what you list for the particulars of your truck (year, engine, transmission, model, etc.) it should fit. I can tell you that if you change this part you will have to first evacuate the system to at least 500 microns (vacuum) or less before charging with R134A. If you don't have a vacuum pump and a micron gage don't do the repair.

 

Can i buy just the high side hose? or no