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Rigid Vacuum Hose Replacement 700 1992

uid 5559's pic
posted by  Guid on  Wed Apr 18 02:16 CST 2007
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last visit: Thu May 9 12:04 CST 2013
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I'm planning to replace all vacuum lines. I bought 10 feet of Goodyear hose from Auto Zone, and I'm ready to go.

The question is this: My '92 has two very thin, rigid vacuum lines with black rubber connectors on the ends, one of which connects to the manifold and the MAP sensor on the left strut tower (it's a Regina car). Will I regret replacing this rigid hose with a traditional style rubber vacuum hose, or am I creating worries where none exist? In short, is vacuum hose vacuum hose as long as it's well-made?

Thanks, everyone.
--
Guid ('92 745 233k, '91 940 SE 257k,)








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    Rigid Vacuum Hose Replacement 700 1992

    posted by  interstition on  Wed Apr 18 14:36 CST 2007
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    last visit: Mon Apr 28 10:13 CST 2014
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    My understanding is that that one is rigid exactly because it goes to the manifold air pressure sensor. A flexible hose could expand and contract, subtly influencing the pressure in the hose and therefore the pressure measured. I guess the rigid hose does a better job of transmitting the actual manifold pressure correct to the sensor.








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      Rigid Vacuum Hose Replacement 700 1992

      uid 5559's pic
      posted by  Guid on  Wed Apr 18 15:53 CST 2007
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      last visit: Thu May 9 12:04 CST 2013
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      I thought that might be true. That's what sparked my question. I guess, then, that if a person ever needed to replace that particular line, it would be a dealer-only item.

      Thanks for your reply.
      --
      Guid ('92 745 249k, '91 940 SE 267k,)








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        Rigid Vacuum Hose Replacement 700 1992

        posted by  tvpierce on  Wed Apr 18 23:21 CST 2007
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        last visit: Tue Apr 8 06:40 CST 2014
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        I pulled a bunch of that rigid hose off a junk Volvo a while back. The car was 20 years old, 300K+ miles and the hose was in perfectly fine shape. The rubber ends are always suspect -- like any rubber vacuum hose -- so I'd consider replacing the ends. You may find that your new vacuum hose works as a replacement for the rubber ends. Also, NAPA has a fantastic silicone vacuum hose -- it's a fantastic upgrade because it's made out of a far superior material (it is not affected by exposure to oil, and is much more resistant to exposure to heat) Plus it works splendidly for making ends for the rigid vacuum lines.

        Jeff Pierce







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