rebuilding my A/C system issues - DODGE DAKOTA FORUM - FORUM AND OWNERS CLUB!
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  #1  
Old 04-28-2017, 01:40 AM
RBG RBG is offline
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Default rebuilding my A/C system issues

So my A/C was dead..no clutch activity. Check the pressure way over charged..drained some Freon still no go. Jumped the compressor nothing. So I worked on replacing the compressor, dryer and condenser. Recharged still nothing and low pressure off the charts. Theory was my orifice filter was leaking so high pressure was bleeding through to low side. So I brought a new orifice tube and filter..(by the way all from Rock auto best price can't say how long the stuff will last but we'll see,) So when I took the old orifice tube assembly out this is what I found ,it had been covered up by a plastic wrap, see pics. Looks like someone cracked/broke it and tried to patch, solder, glue?? it back together!! P.O.'s suck!

Anyway in the process of recharging now will let you know that goes with all new parts except the evap core in the dash.

Well, I vacuum the system but it is not holding vacuum..I have double checked all the connections I touched..both ends of the orifice tube, the compression joint in the middle of it and the electrical switch port. Note it did hold vacuum on the first rebuild before I found the hinky orifice tube and replaced it. so I am assuming the leak is there but I have driven the truck around for a month or so w/o dealing with this replacement so I guess something else could have loosen up.


So How can I find a leak w/o recharging the system. Or do I have to charge it up with 134 and some leak detection fluid???

Just noticed my original post about the A/c is still on page one..for more detail you can check that out but I covered the important stuff here above...
Attached Images
File Type: jpg oil orfice tube (1).jpg (90.1 KB, 5 views)
File Type: jpg oil orfice tube (2).jpg (99.0 KB, 5 views)
File Type: jpg oil orfice tube (3).jpg (92.5 KB, 5 views)
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Last edited by RBG; 04-28-2017 at 01:47 AM.
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  #2  
Old 04-28-2017, 11:26 PM
RBG RBG is offline
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Vehicle: 2002 DODGE DOKOTA SPORT
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Engine: 1997-2002 - 2.5 L (150 cu in) AMC I4, 120 hp (89 kW)
Rep Power: 0
Rep:10
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Default

well, redid all the connections on the orifice tube-and it seemed to fix the leak. So I fired her up and started to charge the system..but the compressor never kicked on the low side was at 100 and high at 50..w2hich says low compressor function which..yeah it never turned on..I put about 20oz. of 134a in it(it takes 24 oz.) and stopped..SOOOO what could cause the compressor not to kick on..besides lack of 134??? I did plug and unplug the one electrical connector on the orifice tube it clicked into place seems tight. I did not check power to the compressor..I'll do that tomorrow. I thought about hot wiring the compressor direct from the battery to see if that would fix my pressure issues when it kicks on..but don't know if that would cause more problems or not to test it that way.....Suggestions???
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  #3  
Old 04-29-2017, 01:39 AM
RalphP RalphP is offline
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Default

You DID pull a vacuum on it first, right? And since it's been open, you've replaced the accumulator or receiver/dryer, right?

RwP
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  #4  
Old 04-29-2017, 11:45 AM
RBG RBG is offline
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Default

Yes, I pull a vacuum..held at 28/29.
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