Oil Pressure Issues - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat

1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 04-01-2003, 01:10 PM   #11
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Originally Posted by Edmund944
Alright.. I did a search of previous posts etc. and based on what a bunch of others have said it seems like the sending unit is the problem. What I have yet to find is a place where I can order one. Is this gonna have to be a "take it to the shop" fix?
Heck, no, you should be able to buy one off the shelf at someplace like Auto Zone, although (1) my local preference is Lee Auto, if you have them in your area, because they stock AC-Delco parts, and (2) I would at least lay eyes on the existing sending unit before going off to buy parts, because if the current one is clean and dry on the outside, I would definitely spend some bucks on a mechanical oil pressure gauge instead, not a sending unit.

See, they're about the same price anyway (I think Wal-Mart charges only about $10 for a mechanical gauge), you're going to have to remove the existing sending unit temporarily regardless, but if the current one isn't leaking, I'm afraid you've got a real oil-pressure problem.

You will need the gauge to confirm this anyway, and afterwards you will have the gauge to put on the shelf for future use next time.

If you buy another sending unit first, all you will have at this point is an extra sending unit, which has just proven that there was nothing wrong with the first sending unit. So I vote for buying a mechanical gauge first, because it will definitely tell you what you will need to do next.

And besides, if you take it to the shop, if they're competent, _they're_ going to put a gauge on it to see what'* up.
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Old 04-01-2003, 09:31 PM   #12
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My sending unit was reading high. That'* when I decided to replace it. I did it by taking off the passenger front wheel and splash guard. Easy access there.

A Series II engine might be different.
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