0 oil pressure on start up.

[GMforlife]

well just what it says. I have no oil pressure when it first starts up. acts like i just changed the oil ever time i start it. its full of oil. what do u guys think? oh one other thing i did get rid of the oil cooler, could that be it?

[grancito]

I had that problem after the last oil change, so I replaced the oil filter again and it cured the problem. Faulty filter allowed the oil to drain back to the pan.

[ZiGBlazer]

He's right, these filters are suppose to have an anti-drainback valve in them, I'm not sure if the passages have one or if they just rely on the filter one, but yours isn't working.

[GMforlife]

thanks guys i will have to change the filter and see what happens.

[trukdoc]

...your .o.ps. could be going bad and starting to read out of range...