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A/C Low pressure switch part number for 93 R134a 200 1993

posted by  ez_pieces on  Sun Jul 8 17:14 CST 2007
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last visit: Wed Jun 23 00:37 CST 2010
[RELATED]

I'm trying to get the AC working in my 93 240 and I think I have a bad low pressure switch (aka pressostat) at the accumulator. The compressor never engages until I jumper the contacts on the pressostat contacts.

Checked low side pressure and found around 35 psi (compressor should be running).
When I jumper the contacts, the compressor kicks in and sucks the pressure down very low.
I think I need a new pressure switch and probably a recharge on the system.

Or, could it be that there is a blockage on the high side that is preventing refrigerant from getting to the accumulator?

Anyway, I am having some trouble confirming the correct part number for the 1993 AC system (factory R134a).

I see 1343216 listed for 92 and later 940s (R134 systems similar to the one in the 93 240).
Is anyone familiar enough with the 93's to confirm this?







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    A/C Low pressure switch part number for 93 R134a 200 1993

    posted by  Jorrell on  Mon Jul 9 11:42 CST 2007
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    last visit: Thu Dec 27 03:00 CST 2012
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    Napa sells a replacement for under $20 ($12 I think)that screws right on. You will have to lob off the bosch style connector on the harness and replace it with two female spade lug connectors. So far, 10K miles and no problem with it whatsoever... just make sure you ask for the R134A flavor as the R12 version has slightly different pressure switch points.

    Nice thing about this job is that you don't lose your refrigerant charge thanks to the shraeder valve on the accumulator!

    jorrell


    --
    92 245 250K miles, IPD'd to the hilt, 06 XC70, 00 Eclipse custom Turbo setup...currently taking names and kicking reputations!








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    A/C Low pressure switch part number for 93 R134a 200 1993

    uid 18083's pic
    posted by  lucid on  Mon Jul 9 08:16 CST 2007
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    last visit: Fri Oct 24 12:31 CST 2014
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    RonJ's Part number 35375062 was superceded by part number 13432166.

    Tasca Volvo (getvolvoparts.com) shows 13432166 PRESSOSTAT for
    $59.94[list]...$42.04 your price

    FCP has a 3537506 by Four "Siezens" for $35


    --
    Bruce Young
    '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.








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    A/C Low pressure switch part number for 93 R134a 200 1993

    posted by  someone claiming to be Ron J. on  Mon Jul 9 06:48 CST 2007 [RELATED]

    Ez,

    I'm afraid I can't help you with you ac problem except to say a low charge will cause a rapid cycling of the compressor. I may however be able to help with your part number problem. I was unable to find you part number in my parts book (1988-1993 240). I do show a part, number 3537506-2, for the 93 with R-134a. The parts book indicates this is a new part number.

    Hope this helps,

    RonJ







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