Question about 1999 Chevrolet Astro

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Low oil pressure

Starts out at 40 PSI and drops to 20 PSI any help? 4.3 v6 automatic vortex engine

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  • diana farson
    diana farson May 27, 2009

    its has about 163000 miles on it

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Oil pressure drop is normal when the engine warms up.

To make the pressure a little higher, you could switch to an oil with a higher viscosity. Try 10w-30 instead of 5w-30 oil for instance.

If you need more help, post a comment.

Thanks,
Tim


Posted on May 27, 2009

  • Tim Phipps May 27, 2009

    What oil do you currently have in your engine?



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How many miles? Next oil change use Gunk motor flush this will remove any build up. Also check wire going to the oil pump sending unit. You might need a sending unit pod. Any parts store will have this.

Posted on May 27, 2009

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