98 ls1 jimbo

Ok so my ls1 only has 90k miles. When I turn on my car the oil pressure is at like 45. I rev the motor and it gos up like it should. When I take off it almost gos to 0 pressurs ill let of the gas and it will be at 40 I rev up and oil gos up. Whats going on with it is that normal?

thompson

iTrader: (4)

check your oil level, Probably low on oil. If not you have some form of restriction on the top end. In any case the motor is running out of oil at the base of the pickup tube.

rumblebox

iTrader: (9)

Your pickup tube o-ring could also be hardened and not sealing. It happened to me with a 15k mile engine that sat too long.

speedtigger

iTrader: (16)

Did that happen over time or was it all of a sudden.

Segond56

This happened to me, the bearings were gone on the main bearings when this occured, same thing would happen. Mine progressivly got worse to the point when at idol oil pressure was at zero. I would check your oil filter, cut it open and check the oil as well. IF not the mains I would bet you have a bad bearing somewhere else. Not the best news.

01ssreda4

iTrader: (96)

My original engine did the same thing, and it was a chewed up thrust bearing on the crank. Check crank endplay to verify the condition of yours. Sounds like low oil though.

LS1121

iTrader: (17)

This guy can't even check his oil level and you think he can understand that.

blacknyellow

iTrader: (3)

Someone suggested he check his oil, he never said he didn't check it. Guy cant spell though..

*assuming you oil pressure guage is correct*
Check oil, change if it isn't clean.
If that doesnt work then you'd better start disassembling to get to that oil pump, replace it!! it is a 98 car? you need a newer (00+ year model) oil pump. Replace the O-ring on the pick up tube with a new one from GM, do not use a generic o-ring.. Look up a write up how to change the oil pump.
You WILL blow your motor if it has no oil pressure. It should have over 40psi at all times, I repeat AT ALL TIMES.

Take care of it