still cannot charge my ac - JeepForum.com

 
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post #1 of 11 Old 06-25-2013, 07:18 PM Thread Starter
rubisean
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still cannot charge my ac

so here is what i have done so far, new compressor, pressure switch, system flush and conversion to 134a. i pull vacuum for 15 minutes and hold for another 15, then inject oil. after that i try to charge with 2lbs. and none will go into the system. i have tried to jump the compressor in an attempt to get it to accept the freon to no avail. the clutch does kick in and out when jumped. could a bad dryer or expansion valve be my problem? thanks in advance

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post #2 of 11 Old 06-25-2013, 07:19 PM
Louie4
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Did you open the valves on the compressor? There are studs on the back where you open them by screwing them in.

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post #3 of 11 Old 06-25-2013, 07:23 PM Thread Starter
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Quote:
Originally Posted by Louie4 View Post
Did you open the valves on the compressor? There are studs on the back where you open them by screwing them in.
yes they are both open, thanks
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post #4 of 11 Old 06-25-2013, 07:53 PM
superj
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I only open the side the freon goes in when I do mine.

But for the problem you have, I am stuck man. You have done everything I would have tried so I have no idea. I forgot everything related to ac systems I learned in tech school 13 years ago.

I don't feel like working on anything, at this time.
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post #5 of 11 Old 06-26-2013, 05:32 AM
Louie4
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Quote:
Originally Posted by rubisean View Post
yes they are both open, thanks
Did you put the proper drier in? I know when I ordered a new one they gave me the wrong style but it was for a YJ.

Other than that I'm stumped. Did you replace the expansion valve?

Lou

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post #6 of 11 Old 06-26-2013, 10:55 AM
OhMY95yj
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Are the 134a adapter pushing the schrader valves open on the r12 ports?

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post #7 of 11 Old 06-26-2013, 05:56 PM Thread Starter
rubisean
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Quote:
Originally Posted by OhMY95yj View Post
Are the 134a adapter pushing the schrader valves open on the r12 ports?
just for kicks i will buy two new retro adapters in an attempt to eliminate one more possible cause. thanks
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post #8 of 11 Old 07-21-2013, 11:24 AM
Louie4
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Did you ever get this resolved?

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post #9 of 11 Old 07-21-2013, 12:54 PM
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If I remember correctly, the valve you have to open up has backwards threads(Turns clockwise to open the valve and counter clockwise to close) mine doesn't even have Schrader valves. Charge using the low pressure side(the larger diameter line) and keep the high pressure line closed.
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post #10 of 11 Old 07-21-2013, 01:40 PM Thread Starter
rubisean
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Did you ever get this resolved?
yes, i finally got it resolved..... ice cold ac 45* at the vents, almost too embarrassed to admit what the problem was. i was certain that i had the valves on the top of the compressor opened, turns out i had them closed. here is the part that baffles me. when i replaced the compressor i made sure i knew the orientation of the valves by physically looking inside of it when it was off the compressor. so by my own assessment i was positive the valves were open and never gave it another thought. the moral of my story is if you "think you know" you probably don't know.
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post #11 of 11 Old 07-21-2013, 02:24 PM
Louie4
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Quote:
Originally Posted by rubisean View Post
yes, i finally got it resolved..... ice cold ac 45* at the vents, almost too embarrassed to admit what the problem was. i was certain that i had the valves on the top of the compressor opened, turns out i had them closed. here is the part that baffles me. when i replaced the compressor i made sure i knew the orientation of the valves by physically looking inside of it when it was off the compressor. so by my own assessment i was positive the valves were open and never gave it another thought. the moral of my story is if you "think you know" you probably don't know.
Glad you got it fixed.

Lou

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