Expansion valve for 95 a/c
- Thread starter MattStang46
- Start date
Update on Orifice Tube
Ok, so after ripping apart my A/C tubes, I finally spoke to a friend, who told me that the orifice tube is located within the line, and in order to change the part you have to cut the tube and get an orifice tube replacement kit, or buy an entire new line. Grabbed the replacement kit, cut open the ac line, replaced the orifice tube, reattached the line and replaced the dryer. However, when I went to charge the ac, i could only charge 1lbs 14oz of the system, when the car takes 2lbs 2oz to fill. Also, the main four dash vents do not work, only the defroster, top 2 side vents and the floor vents work. Any ideas on what can be wrong? The only thing left I haven't changed is the condenser and don't wanna go changing that quite yet if that isn't my problem.
Ok, so after ripping apart my A/C tubes, I finally spoke to a friend, who told me that the orifice tube is located within the line, and in order to change the part you have to cut the tube and get an orifice tube replacement kit, or buy an entire new line. Grabbed the replacement kit, cut open the ac line, replaced the orifice tube, reattached the line and replaced the dryer. However, when I went to charge the ac, i could only charge 1lbs 14oz of the system, when the car takes 2lbs 2oz to fill. Also, the main four dash vents do not work, only the defroster, top 2 side vents and the floor vents work. Any ideas on what can be wrong? The only thing left I haven't changed is the condenser and don't wanna go changing that quite yet if that isn't my problem.
wmburns
SN Certified Technician
I can help you with the vent problem and maybe help with the charge problem.
The air only coming out of the defrost is caused be the damper motors either not getting any VACUUM or being bad. Start first by checking the vacuum line from the engine bay into the passenger compartment. Look for kinks, breaks, or leaks. If you can't find anything, the problem may be in the AC control panel or the damper motor itself.
The control panel can be removed without too much fan fare. However, the damper motor may be completely different. You may be able to see the motor in the extream lower right hand side of the passenger compartment. However, I doubt it can be serviced without removing the dash.
I have removed the dash in my 96 to repair the AC. I can tell you it's a job.
With regards to the low charge rate, did you add oil? If too much, this could be the problem. Also, if there is not enough air flow over the evaporator (cause by the damper being in the wrong position), this will cause the system to not take a charge.
Finally, if the compressor is not pumping enough pressure differential, this can cause the system to not take a charge (as well as any blockage in the lines).
OBTW, did you pull a vacuum before recharging?
The air only coming out of the defrost is caused be the damper motors either not getting any VACUUM or being bad. Start first by checking the vacuum line from the engine bay into the passenger compartment. Look for kinks, breaks, or leaks. If you can't find anything, the problem may be in the AC control panel or the damper motor itself.
The control panel can be removed without too much fan fare. However, the damper motor may be completely different. You may be able to see the motor in the extream lower right hand side of the passenger compartment. However, I doubt it can be serviced without removing the dash.
I have removed the dash in my 96 to repair the AC. I can tell you it's a job.
With regards to the low charge rate, did you add oil? If too much, this could be the problem. Also, if there is not enough air flow over the evaporator (cause by the damper being in the wrong position), this will cause the system to not take a charge.
Finally, if the compressor is not pumping enough pressure differential, this can cause the system to not take a charge (as well as any blockage in the lines).
OBTW, did you pull a vacuum before recharging?
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