Other S80 Problem: - S80 Oil Pressure Drops when Hot

dmcgilli · Aug 8th, 2011, 20:57

1999 S80 oil pressure drops after engine heats up (can see lack of oil in top end). Replaced oil pump & screen and cleaned passages. Thinking that it migth be the main bearings but does not make any "bottom end" noise when low pressure.

ALANJACKSON2011 · Apr 17th, 2012, 10:05

Did you ever fix it?

I have the same problems, replaced seals cleaned sump etc.

Exactly the same.

I have read many many posts but never seen this problem cured by a new oil pump, so I don't want to waste money on one if it won't fix it,

Thanks,

Malcolm

Aug 8th, 2011, 20:57	#1
dmcgilli New Member Last Online: Aug 8th, 2011 22:39 Join Date: Aug 2011 Location: Atlanta, GA	S80 Oil Pressure Drops when Hot 1999 S80 oil pressure drops after engine heats up (can see lack of oil in top end). Replaced oil pump & screen and cleaned passages. Thinking that it migth be the main bearings but does not make any "bottom end" noise when low pressure.

Apr 17th, 2012, 10:05	#2
ALANJACKSON2011 New Member Last Online: Aug 6th, 2012 11:12 Join Date: Jul 2011 Location: nowrich	Did you ever fix it? I have the same problems, replaced seals cleaned sump etc. Exactly the same. I have read many many posts but never seen this problem cured by a new oil pump, so I don't want to waste money on one if it won't fix it, Thanks, Malcolm

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