FEOA Forums banner
1 - 2 of 2 Posts

·
Registered
Joined
·
66 Posts
Discussion Starter · #1 ·
Hello everyone. I have a 1994 Escort LX 1.9 with auto and factory A/C. My A/C was getting cold, then would go hot. I took it to a shop and had it placed on the machine and it holds vacuim and has not leaks in the system. However when the coupler is removed from the high side you can hear a leak right at the high side valve connection. So as far as I know my A/C system is fine other than that leak right at the high side port. Can I replace that righ side port and simply charge it with 1.2lbs of r134a? Also with the system going from cold to hot and back to cold, should I replace the orifice tube...as I hear they can become clogged over time? My Haynes manual does not cover A/C troubleshooting. The books tells me that A/C work is beyond the book thus does not cover it.
 

·
Premium Member
Joined
·
703 Posts
You can replace the high side schraeder valve. Use a tool like one for removing the stem from your tire.

Auto parts store should sell those fittings. HOWEVER, you will need to pull all freon out of the system before attempting this.

You can replace your orifice tube while at it because they do tend to get plugged. Not likely your problem however since your A/C does get cold.

You probably need to be looking at the low or high side pressure switches to repair this issue.

OR your temp control switch in the dash if your car has one.

IF the orifice tube were plugged, it would starve the evaporator for freon and the A/C wouldn't get cold.

Always smart to replace the orifice tube when you open your system but you'll need to have a good vacuum pump available so you can evacuate the system for a good amount of time to get the moisture out before charging it up.
 
1 - 2 of 2 Posts
Top