Bern1982

Where should I start looking? What is the possibly of a spun bearing?

Rob94hawk

iTrader: (1)

What were you doing when you lost oil pressure? And make a sig so we know what engine/year you're talking about. How many miles?

If it is an LT1 then check the oil pressure sensor in the back, oil level. If all is well then it may be time to yank the engine.

myltwon

iTrader: (1)

Well if you have a bad bearing, typically it will make a sound. First thing would be to hook up a mechanical gauge and make sure it's not just a faulty sensor or bad wiring. Also need more info on what oil pressure you have, acceptable oil pressure in an LT1 is much lower than you might think. Of course if you're oil pressure is dropping during increased loads would be helpful.

myltwon

iTrader: (1)

93 to early 94's had the oil pressure sensor above the filter IIRC.

Bern1982

I have a 97 z28 stock motor 131,000 miles. I was driving home when I heard the valves taping after a few more miles it got noticeably louder and the idiot light came on oil press was at 0. I pulled into a gas station and checked the oil and topped it off. Still sounds like it's not getting any oil. Car has been sitting for almost a year since. The car sat for about a year prior until I intalled the new opti and water pump. I have put maybe about 1000 to 1500 miles on this oil change in the last 3 years..

RamAir95TA

iTrader: (2)

You may have stripped the oil pump drive gear (possible) in turn losing oil pressure. I'd pull the intake manifold first and see what's going on (after checking oil pressure with a manual gauge).

leadfoot4

iTrader: (1)

If the lifters are clattering, you've got no oil pressure. Don't start the engine and do any more damage. Pull the intake, and then remove the oil pump drive gear and inspect it. See if it's stripped. If not, possibly the plastic collar that holds the pump's drive shaft broke, allowing the shaft to be displaced, and it's not turning the pump. If that's the case, you'll have to drop the oil pan and dig deeper...

chino_man279

iTrader: (7)

I would follow leadfoot's advice. It sounds like the drive gear is toast to me.

Bern1982

What would you guys recommend as a replacement? Should I go with another oem part?

leadfoot4

iTrader: (1)

Replacement for what part(s)?

defaultexistence

iTrader: (11)

Yes OEM replacement oil pump drive IF it's toast.

SoxXpupPeT

iTrader: (34)

definitely pull the intake and check the oil pump drive gear. Ive had them go out on me twice.

quik95lt1

iTrader: (7)

how long did it run with no pressure?

rich5368

iTrader: (2)

If it wasn't making any weird noises the first thing I'd do is put a manual oil pressure gauge on it. There is no reason to pull the manifold if all that happened was an electric sending unit went bad.

Bern1982

I ran about 2 miles shut it down called AAA and argued with the Guy about sending a roll back. But it does sound like there is no oil. I'm replacing the oil drive this weekend and doing the timing cover gaskets while I have it apart.

Bern1982

Bingo oil drive is stripped thanks for the info guys

RamAir95TA

iTrader: (2)

You're welcome. Hopefully no permanent damage was done.

SoxXpupPeT

iTrader: (34)

Ah man i know the feeling. Mine let loose a mile from my house at 1am... safe to say. It was one of the more interesting drives in my life making it home without burning up the engine.

tricked94camaro

iTrader: (1)

my first reaction to no oil pressure is a very low oil level.