Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

4.3L oil pressure issue

Discussion in 'The Garage' started by Muddytazz, Nov 22, 2005.

  1. Muddytazz

    Muddytazz 1 ton status

    Joined:
    Jun 30, 2002
    Posts:
    20,073
    Likes Received:
    0
    Location:
    Salem, Or.
    My father-in-law gave me his old 89 S15 Jimmy to fix up and sell. Only thing I can find wrong with the motor is the oil pressure. You start it up and you have nice good pressure(about 65), but after you drive for about 45 min, the pressure has slowly dropped to "0". Shut the rig off for about a min, start it back up and you have full pressure again and can drive for about another 45 min when you've lost pressure again. Any ideas?
     
  2. big83chevy4x4

    big83chevy4x4 3/4 ton status

    Joined:
    Mar 22, 2002
    Posts:
    6,587
    Likes Received:
    0
    Location:
    Sheridan, Michigan
    my cousin had a similar problem in his 88 4x4. it would be at 40 at start up and gradulally go down to 0 when warm. if you let it set a while, and start it again, it would have oil pressure.
    when we pulled the motor, i pulled the pan off and the oil pickup was laying in the botom on the pan. with the deep sump, the oil was away from the oil pump.
     
  3. Muddytazz

    Muddytazz 1 ton status

    Joined:
    Jun 30, 2002
    Posts:
    20,073
    Likes Received:
    0
    Location:
    Salem, Or.
    Hmmmmm, so far sounds like it might be an easy fix. I know this motor doesn't burn any oil and doesn't leak any either.
     

Share This Page