bp m1009

iTrader: (2)

so i went to start my Z today for the first time in about a month or so and i fired her up she was running for maybe 3 seconds when i looked at the oil pressure gauge and it was pegged on 0. I quickly shut the car off. The car has always had good oil pressure in the past, im at a lose as to why all the sudden it is reading 0? I was thinking that maybe its the gauge or sending unit it possibly, because it does something a little funky. when the key is OFF the gauge would creep up a little to maybe 5-10psi ish, and then when you turned the key to run the needle dropped back to 0? does this seem odd to anyone?

Zlow28

iTrader: (11)

I had the exact same thing happen on mine and i had to replace the oil pump. It was running perfectly, then dropped it off at a mechanics for about a month, and then almost no oil pressure.

Maybe yours could just be the spring inside the oil pump. That way you dont have to replace the whole thing.

bp m1009

iTrader: (2)

ive had this thing apart so many times, i thought i was finally done!

bp m1009

iTrader: (2)

is there a procedure to test my oil pressure gauge?

bp m1009

iTrader: (2)

anyone?

seawolf18

iTrader: (18)

You can hook up a mechanical gauge, and verify that you don't have pressure or you do. If you don't have any the top end also would make a ton of noise.

Tainted

iTrader: (9)

Very well could be the sending unit

S10xGN

iTrader: (11)

Just had to change this on the wife's '09 CTS (not -V) with only 27k miles. Had to change 2 of them on the previous '04 we had. GM has really been settling for some junk "factory" parts lately...

bp m1009

iTrader: (2)

thats the thing. there was no abnormal lifter noise when i started it, so there had to be some oil pressure?