Oil pressure

1992 FORD BRONCO
V8 • 4WD
Avatar
RLACKEY
  • MEMBER
  • 1 POST
1992 Ford Bronco. Engine is a 351.When the engine is cool, the oil pressure is fine.
Oil pressure is good when driving.
When the engine reaches normal operating temperature the pressure drops into the red when stopped with the brake on. What is the cause of this?
Jun 15, 2011 at 11:32 PM
Advertisement
Avatar
CARADIODOC
  • CAR REPAIR CONTRIBUTOR
  • 34,309 POSTS
Typically worn engine bearings, but can also be caused by a worn oil pump, oil that's too light, oil that's diluted with raw fuel, and low oil level.
Jun 16, 2011 at 2:05 AM
Avatar
CJ MEDEVAC
  • CAR REPAIR CONTRIBUTOR
  • 11,004 POSTS
May be a bad sender or gauge (best scenario is the sender)

Could be true pressure---worn out engine mechanicals

Only way to know for sure is to install a temporary Mechanical gauge

Mine's designed to run under the hood and into a window, as being able to drive and monitor "Actual Oil Pressure"

If you need help figuring out how to do this, or where to obtain the necessary stuff, let me know.

Don't forget to let me know your findings--I hope they are good, and you just need a new sender!

The Medic

Image (Click to enlarge)
Attached Media
Jun 16, 2011 at 2:07 AM
Avatar
CJ MEDEVAC
  • CAR REPAIR CONTRIBUTOR
  • 11,004 POSTS
Sorry Doc, you know I'm really slow!

The Medic
Jun 16, 2011 at 2:10 AM
Avatar
RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
The war will be over by the time you get there, Get it together and Move it soldier and in a smart way-lol your 31V4PH
Jun 16, 2011 at 12:59 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.