Well, would the noise be instantaneous upon the initial reading of 0psi?

If not, how long would it be before it started tapping?

And seeing how this change was all of a sudden, is it more likely that it is the sending unit, pump, or an actual bearing?

 

Are you using 5w30???

 

You know, You already have a thread about this. Why hijack this one? Replace your sending unit as suggested in the other thread.

 

thanks shoebox for the pic . iam not sure but i think i have a early model 94 . was bought in early 94 and think rembering reading the window sticker was made in march. could i tell by my vin # ? how do i find this out ? i lost my oringal papers when i bought it back in 94 ?

i havent checked the sensor yet looks hard to get to if it is on the back of the motor . is it hard to get to if its by my oil filter probally not ?

 

ok nvm mind i just went out to my car and yes the sending unit is back there i can feel it. i would of never new where it was w/o out that pic . thanks again shoebox. so my car is a late 94 .it was 10 years ago thou

and yes i use castrol 5-30w and a autolator oil filter. i had a gm oil filter on there before i just changed my oil and same readings .


where do i hook up a mech gauge at ?

 

You can do it more easily right here.

 

Mine would do the exact same thing after I changed to 5w30 when previously i had w40 in it. Then the oil pressure really started to drop after adding a can of "engine restorer"(wich is crap by the way),I changed back to castrol 10w40 and now everything is peachy.