Question about 1990 Ford F150
Oil pressure drops when engine rpm is below 1200
You probably have a high mileage engine. Change the oil and go to a heavier oil viscosity and use a quality oil filter. This should help a little. If the engine has many miles on it this is about all you can do to boost the oil pressure. I don't know what engine you have. So you have one of two possibles here. A 302, a 351. A high mileage engine in either of these two engine configurations should have at least 20 pounds pressure at an idle and should rise as the engine rpm's increase. Good luck.
Posted on Mar 06, 2009
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Apr 24, 2015 | 2005 GMC Envoy
Nov 26, 2012 | 2004 GMC Envoy
Sep 06, 2012 | 1999 Chevrolet Blazer
Apr 01, 2012 | 2006 Chrysler PT Cruiser
Apr 29, 2010 | 1999 Volkswagen Golf
Jan 09, 2010 | 1996 GMC Jimmy
Oct 30, 2009 | 2006 GMC Yukon Denali
Aug 03, 2009 | 2003 Chevrolet Suburban 1500
Jul 18, 2009 | 2002 Isuzu Rodeo
169 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: