cmg

I am original owner of 1993 F-150 with EFI 302. Pick-up still runs great with 170K miles. I have noticed over last couple of years that oil pressure guage reflects pressure at low end of NORMAL and it is has continued to drop from the R to O to now the N. Sometimes it moves up to b/w O and R, but it is usally around the N these days.

Is this likely to be a guage or pump problem? How do I check the guage and sending unit first to see if this is the problem? Where is the sending unit located?

Should I install a separate guage that gives a numeral read-out?

If oil pump needs to be replaced, how big of a job is this?

Let me know if you have any suggestions. Thanks.

cmg

falcon coupe

CMG, you may notice you posted this in the new members forum, if you take the time to look around, you will see you should have posted this question here :
http://www.fordforums.com/forumdisplay.php?f=498

Welcome to the forums.

89F150

Welcome to the forums. Even though this is in the wrong thread i would install a mechanical guage. It will show the actual pressure. These guages are only rough indicators of the pressure. They only show if you have pressure or not. Ask away in the Tuck section and ill see if i can help you more.

jakeq19

I had this same thing happen in my '87. It was a bad oil pressure sending unit. Only about $15 to replace it. It should screw into the side of the block and have one wire attachedto the top.