mndang@gmail.com wrote in
news:1155494200.611350.233720@h48g2000cwc.googlegr oups.com:

> Hi All,
>
> Could you help identify this problem? I have an '97 Honda Prelude SH
> with 167K miles. The oil light comes on in the afternoon when I drive
> for a while with the A/C on. I drive for 30 min. on the freeway with
> the A/C on then when I slow down to under 10mph or stop the oil light
> begins to flicker and then blinks continuously. The rpm goes really
> low but the engine doesn't shut off. It's hot in Houston. I turn off
> the A/C and the oil light still flickers. I don't have this issue in
> the mornings or at night. Does the heat have to deal with it?
>
> I check my oil level and use Catrol Syntec Blend 10w30 and the levels
> are normal. Is it the alternator? I don't think so, b/c my electrical
> system seems normal. WHat do I need to change or replace?
>



The oil light is supposed to come on when the pressure is below something
like 6 psi. If the pressure is hovering around 6, the light will flicker.

1) If your revs drop below normal idle and do not recover, your A/C idle-up
is not working. This could be all the problem is. Where is the tach needle
when it's idling with the oil light on?

2) Defective pressure sender. Have the oil pressure checked as soon as
possible to rule this item out.

3) Worn bearings. Oil pressure is primarily a function of the main bearings
of the crankshaft and the big ends on the connecting rods. If they're worn,
the oil pump will be unable to maintain pressure with thin, hot oil and low
revs.


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TeGGeR®

The Unofficial Honda/Acura FAQ
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