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Thread: A/C Compressor from Rock Auto, 87 CSX

  1. #21
    Supporting Member Turbo Mopar Contributor mopar-tech's Avatar
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    Re: A/C Compressor from Rock Auto, 87 CSX

    Quote Originally Posted by 135sohc View Post
    Good to hear everything is going well. My back/lower spine area has been an on-off train wreck for 15+ years now, even in HS (I'm 33 this year, do the math) I could remember the occasional flare up occuring during gym class. The last 3 years it has been a constant presence of pain almost around the clock now. When I get back from vacation next week I have a consultation with a specialist, the first two places I went just wanted to throw pills at the problem.
    1) See if you can find a good neurosurgeon, that is where my path lead.

    2) Avoid or at least be skeptical of "back centers or orthopedic centers" my experience is they don't want you fixed, they want you in orbit around their facility indefinitely so they can shake down your insurance for as long as possible. They call it "shaking the money tree" and you're the tree.

    3) Insurance companies want to do least expensive first and this can drive the people you interact with. Also if you see a pill pusher, they are going to want to push pills rather than hand you off. Handing you off doesn't pay their bills. There are other factors of course, but a good general rule of thumb. Document everything.

    Depending on your condition the path might look like this;

    Physical Therapy -> Oral Medication -> Shots -> Ablation -> Surgery.

    In my case I had ironclad proof something was physically wrong (MRI showing damage & shots to verify it) so it was go time. I never even made it to ablation as the MRI clearly showed things were going to get worse.

    Ablation is where they "cook" the nerve ends so they reduce the amount of pain information transmitted. Like when you have a rod knock and you turn the radio up. Its temporary though and doesn't address the root cause. It maybe appropriate for some folks depending on what their root cause is.

    Happy to answer any questions, here or in private if you prefer.

    Gary


    Working on clearing the decks.

  2. #22
    Supporting Member Turbo Mopar Contributor mopar-tech's Avatar
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    Re: A/C Compressor from Rock Auto, 87 CSX

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    Having way to much fun today.


    Working on clearing the decks.

  3. #23
    Supporting Member Turbo Mopar Contributor mopar-tech's Avatar
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    Re: A/C Compressor from Rock Auto, 87 CSX

    AC switch installed and working great and I installed this sweet little AM/FM/USB media device that works pretty damn nice.

    https://www.amazon.com/dp/B01CG8N0H8...roduct_details

    Best $37 I ever spent for audio.
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  4. #24
    Supporting Member II Turbo Mopar Contributor jeff1234's Avatar
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    Re: A/C Compressor from Rock Auto, 87 CSX

    I have this A/C system mystery. I have a new four seasons compressor, the system held 29 inches hg. I put 3 cans of R134 into the system. The compressor cycled alot and finally quit. I bypassed the low pressure switch and the compressor runs so the low pressure switch is good as is the A/C clutch thermal switch. I also checked the diode in the plug wiring for the compressor. I mention all these to eliminate extra questions.
    I hooked the vac pump back up to the system and it holds 29 inches. How the heck can the system eat three cans of R134 leaving the system at 0 psi and then hold vacuum. This makes no sense at all to me, any seen this before?
    The only substitute for cubic inches is cubic dollars, how fast can you afford to go?

  5. #25
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    Re: A/C Compressor from Rock Auto, 87 CSX

    Quote Originally Posted by jeff1234 View Post
    I have this A/C system mystery. I have a new four seasons compressor, the system held 29 inches hg. I put 3 cans of R134 into the system. The compressor cycled alot and finally quit. I bypassed the low pressure switch and the compressor runs so the low pressure switch is good as is the A/C clutch thermal switch. I also checked the diode in the plug wiring for the compressor. I mention all these to eliminate extra questions.
    I hooked the vac pump back up to the system and it holds 29 inches. How the heck can the system eat three cans of R134 leaving the system at 0 psi and then hold vacuum. This makes no sense at all to me, any seen this before?
    Vacuum is very different than pressure as far as leaks are concerned. I had a similar issue to you approx 7-8 years ago. The solution was to pressurize the system, find the leak with soap solution and repair. I used red loctite on the seals of the dryer and we are now good ever since
    Regards,
    Miles

    DD '87 Sundance T1, SLH with rear disks
    '87 CSX #432 2.5 CB TII, SLH

  6. #26
    Supporting Member Turbo Mopar Contributor mopar-tech's Avatar
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    Re: A/C Compressor from Rock Auto, 87 CSX

    Quote Originally Posted by jeff1234 View Post
    I have this A/C system mystery. I have a new four seasons compressor, the system held 29 inches hg. I put 3 cans of R134 into the system. The compressor cycled alot and finally quit. I bypassed the low pressure switch and the compressor runs so the low pressure switch is good as is the A/C clutch thermal switch. I also checked the diode in the plug wiring for the compressor. I mention all these to eliminate extra questions.
    I hooked the vac pump back up to the system and it holds 29 inches. How the heck can the system eat three cans of R134 leaving the system at 0 psi and then hold vacuum. This makes no sense at all to me, any seen this before?
    Picture of compressor? If it is the C-171 style suspect the front seal.


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  7. #27
    Supporting Member II Turbo Mopar Contributor jeff1234's Avatar
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    Re: A/C Compressor from Rock Auto, 87 CSX

    Thanks Miles, I've already sealed the joints at the condenser and evaporator with rtv because I noticed that seals in the various connections show no crush but still the tiny leak showed up after a bit. I hope it's not the Rock Auto evaporator. How did you pressurize the system, compressed air. If so did you just input air at the muffler on the high side? How much pressure did you use?
    The only substitute for cubic inches is cubic dollars, how fast can you afford to go?

  8. #28
    Supporting Member II Turbo Mopar Contributor jeff1234's Avatar
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    Re: A/C Compressor from Rock Auto, 87 CSX

    Brand new Four Seasons. Not a rebuilt.
    The only substitute for cubic inches is cubic dollars, how fast can you afford to go?

  9. #29
    Super Moderator Turbo Mopar Staff 135sohc's Avatar
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    Re: A/C Compressor from Rock Auto, 87 CSX

    Nitrogen would be preferred. Being a dry inert gas it will not introduce more contamination into the system like regular shop air.
    1994 Shadow Sedan. 2.2 N/A, A568 396,000 miles. "the science experiment"
    1987 Shelby CSX #418. Long term rebuild and restore ?

  10. #30
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    Re: A/C Compressor from Rock Auto, 87 CSX

    Quote Originally Posted by 135sohc View Post
    Nitrogen would be preferred. Being a dry inert gas it will not introduce more contamination into the system like regular shop air.
    Agreed 100%. But I used oil free compressed air and 3 days with a 10-4 torr scientific vacuum pump which get rid of the contamination. If I do it again, I will now use my MIG argon.
    Regards,
    Miles

    DD '87 Sundance T1, SLH with rear disks
    '87 CSX #432 2.5 CB TII, SLH

  11. #31
    Supporting Member Turbo Mopar Contributor mopar-tech's Avatar
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    Re: A/C Compressor from Rock Auto, 87 CSX

    Quote Originally Posted by jeff1234 View Post
    Thanks Miles, I've already sealed the joints at the condenser and evaporator with rtv because I noticed that seals in the various connections show no crush but still the tiny leak showed up after a bit. I hope it's not the Rock Auto evaporator. How did you pressurize the system, compressed air. If so did you just input air at the muffler on the high side? How much pressure did you use?
    Never use RTV on A/C connections.

    The system can take upwards of 400+ psi on the highside before the relief goes.


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  12. #32
    Supporting Member II Turbo Mopar Contributor jeff1234's Avatar
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    Re: A/C Compressor from Rock Auto, 87 CSX

    I coated the steel rubber covered seals and didn't pull a vacuum until 24 hours later. I used the rtv to accommodate sealing surfaces that weren't crushing the raised areas.
    The only substitute for cubic inches is cubic dollars, how fast can you afford to go?

  13. #33
    Rhymes with tortoise. Turbo Mopar Staff cordes's Avatar
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    Re: A/C Compressor from Rock Auto, 87 CSX

    Quote Originally Posted by jeff1234 View Post
    I coated the steel rubber covered seals and didn't pull a vacuum until 24 hours later. I used the rtv to accommodate sealing surfaces that weren't crushing the raised areas.
    If your mating surfaces are bad enough to necessitate RTV, they need replaced anyway. They should be machined faces, though others have pointed out deformation due to tightening of fasteners. Even then, it should never be in the .004" RTV range. That's a huge gap when attempting to contain a gas.

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