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It sounds like the engine have a very low oil pressure and that the dip in rpm when A/C engage is enough to bring it under the level for oil pressure light to come on.
The only way to be sure is to hook a manual pressure gauge up somewhere to measure actual pressure.
Keep in mind that the threshold for light to come on is WAY below normal operating pressure and should not be taken lightly.
So if your engine oil pressure is operating just barely above to keep the light off, you are doing damage for every mile driven due to insufficient pressure.
Anders
SWEDECAR
Posts in this Thread:
- 3 questions, part 3: oil light flicker & AC clutch, CrNiFe
, Mon, 21 May 2007 18:52:29- Diagnosis part 3: oil light flicker & AC clutch, CrNiFe
, Sat, 26 May 2007 12:35:53 - Update part 3..., CrNiFe
, Thu, 24 May 2007 07:22:00 - Re: 3 questions, part 3: oil light flicker & AC clutch, 20years, Wed, 23 May 2007 14:49:36
- Re: 3 questions, part 3: oil light flicker & AC clutch, SWEDECAR
, Mon, 21 May 2007 20:09:33 <-- Viewing This Message
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