1994 Ford Ranger High Oil Pressure

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JOHN5MT
  • MEMBER
  • 2 POSTS
For whatever reason my oil pressure guage on my engine is reading that i have abnormally high oil pressure on a 94 ranger with a four liter. It stayes between the H and the L on the end of "normal". As it rises the engine tempture slowly rises once the pressure stops rising. It seems to me a port somewhere must be blocked becaue when i turn the engine off and on it slowly rises back to that place on the pressure guage. If this is a correct diagnosis how do you go about unpluggin the engine?
May 5, 2006 at 12:07 PM
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LOSONE
  • ✓Experienced Mechanic
  • 1,616 POSTS
firsts you have to decide if it is an oil pump problem or a sending unit problem. Have the oil pressure checked with an analog gauge. It will tell what you need to replace Good luck
May 6, 2006 at 3:02 AM
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JOHN5MT
  • MEMBER
  • 2 POSTS
I just had the motor out. It wasnt doing this and then once i put it back in it all of the sudden did this. I am going to do a gauge test and get back to you.
May 6, 2006 at 12:42 PM

Suggested Repair

Verify actual oil pressure with an analog gauge to determine whether the oil pump or the sending unit needs replacement.

Conversation Summary

The owner of a 1994 Ford Ranger 4.0 reports the oil pressure gauge reading high in the normal range, with temperature rising as pressure rises, and suspects a blocked port after reinstalling the engine. The expert advises checking oil pressure with an analog gauge to distinguish an oil pump problem from a sending unit problem. The owner plans to perform that test.

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