TeGGeR® wrote:
> 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?

When the A/C is on the tach needle is low, close to 0rpm or half of
1rpm. Turning off the A/C helps bring it up a little, but still low.

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

I'll check it out. Thanks for everyones help!

> 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.
>
>
> --
> TeGGeR®
>
> The Unofficial Honda/Acura FAQ
> www.tegger.com/hondafaq/