Quote:
Originally Posted by pfarah
Thanks, didn't know that... My system is clogged due to the extremely high gauge readings and I think the cause is a bad expansion valve. Therefore requiring me to partially remove the right side dash. I really am looking for some guidance once the glove box and knee pad is removed. I've been looking everywhere but still haven't found a detailed procedure.
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To access the expansion valve on the early 944 or the 924S series, the entire evaporator, blower assembly must be removed.
This is the condensed version:
Evaporator unit removal on early 944 - Rennlist Discussion Forums
I will add a few photos and suggestions.
Once the kick panel and glove box is removed----get out your camera and take pictures of the front. Focus on the wires--where they are put. Take more pictures of the AC hard lines. If you do not put the wires back in the same place-especially the lines on top of the blower it will not fit well. You will also get vibration noise later.
AC Blower/evaporator housing front
AC Blower/evaporator housing panel removed
AC Blower/evaporator housing removed TOP view
Inside AC Blower/evaporator unit to get to Expansion valve--circled
RED
You need a few AC "O" rings and AutoZone sells a small and large kit. You might be able to get by with just the small kit.
You also need some AC POE 100 esther oil to pre lube the AC "O" rings. The oil can be used to replace an ounce or so as well because it will mix with either R12 or R134a oils. Or use the AC oil you put in originally.
The expansion valve is a simple device and it may just need to be cleaned. If you want to order a new expansion valve, have the old one with you when you go to the store or internet. Make sure they are identical. Different valves were used.
In my 924S:
Carefully tighten all connections-very snugly. If you have a leak tester--after you have the unit back in place but before you put on the kick pad---test for leaks.
Simple EH!
GL
J_AZ