Re: oil pressure drop

deafone wrote:
> My sons 2001 Ford Explore 6cyl. 4.0 . the problem is when it is driving
the
> oil pressure is at the half way point on the scale. but during idle at
> stops etc. it drops to the low end of scale. regular oil changes.new
> filter. what would cause this to happen? the check gauge lite went
> on,would a bad oil pump or faulty pressure switch be the culprit or is
it
> just the oil breaking down i think he uses 10w30 valvoline.
> 
> --
> Message posted using http://www.talkaboutautos.com/group/rec.autos.4x4/
> More information at http://www.talkaboutautos.com/faq.html
> 

Old age....  The crank main bearings for one wear which radically lowers 
the oil pressure.

Or a bad gauge.  A test with a mechanical gauge is in order before an 
engine teardown.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
'New' frame in the works for '08.  Some Canadian Bush Trip and Build
Photos: http://mikeromainjeeptrips.shutterfly.com