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oil pressure gauge going crazy

Discussion in 'Fox-Body Cobras' started by psycholx, Apr 12, 2017.

  1. psycholx

    psycholx ALWAYS STANG, SOMETIMES L Established Member

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    See attached video. I have been have a issue with my oil pressure gauge dropping to zero at idle (after warm up), rev the engine and it goes back up. Replaced the sender unit with a new one, and she went bizerk. Can my gauge pod be going out or what? That's the only gauge I am having an issue with. Any ideas?
    Initial issue:
    th_20160411_065429.jpg

    After replacing sending unit:
    https://drive.google.com/open?id=0BwA6_k7aFSX6VlFSVEkyeVVRbDQ
     
  2. robertlyons

    robertlyons Member Established Member

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    My first suggestion is plug in a mechanical guage temporarily to make sure you don't have a bigger engine problem. After you confirm you have cold and hot idle pressure, then we can talk about electrical troubleshooting.
     
  3. BLKFOX

    BLKFOX Active Member Established Member

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    ^ What he said. I would do that before anything.
     
    snakeplisskin93 likes this.
  4. psycholx

    psycholx ALWAYS STANG, SOMETIMES L Established Member

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  5. buddha93

    buddha93 Active Member Established Member

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    And that's taking a reading from where? Mech or electric? No way that thing has an oil pressure problem, you'd hear it for sure, definitely wouldn't increase.
     
  6. psycholx

    psycholx ALWAYS STANG, SOMETIMES L Established Member

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    It was taken from the factory sender unit with an electric guage..
     
  7. buddha93

    buddha93 Active Member Established Member

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    So you've replaced the sending unit, have you removed the extension from the block it mounts to? Verify that it's clear of any obstructions?
     
  8. psycholx

    psycholx ALWAYS STANG, SOMETIMES L Established Member

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    Yes, i removed the tube to verify, nothing was there. I am at a loss..Valves/lifters ate not making any noise..
     

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