2000 Chevy Tahoe Oil pressure

Tiny
HCARLON05
  • MEMBER
  • 2000 CHEVROLET TAHOE
  • V8
  • 4WD
  • AUTOMATIC
  • 101,322 MILES
In the morning when the truck is cold and I start it oil pressure stays at 0 psi and I could hear a knocking in the engine, so in order for the pressure to go up I have to accelerate, and when the truck heats up it runs fine. I already did an oil change and replaced it with 5w-30.
Tuesday, January 1st, 2008 AT 9:18 PM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
If this is a problem that has been getting worse over time, it is a fair bet that the engine is just getting worn bearings. If this has just started to be an issue it may be related to a pressure relief valve sticking open. I would get the engine hot and add can of oil system flush, be guided by instructions and chance oil, try a 10 weight oil as the 5 may be just to thin for your car now. Just check the speck on usable oil and go for a max weight oil that you can use, considering your temperature variants.

Mark (mhpautos)
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Tuesday, January 1st, 2008 AT 10:41 PM

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