3rdCoastPowerSports

iTrader: (5)

does the PCM have to see oil pressure in order to work properly. I am working on a hybrid that has the oil pressure sensor removed and a mechanical gauge put in its place. Motor just cranks and cranks. I remember reading something in the FSM a few years back about the computer having to see at least a few psi of oil pressure before it will allow the motor to start. Is this correct? or can you completely remove the oil pressure sender and install a mechanical gauge without running in to any issues?

OhTwo

iTrader: (13)

I think it should work without seeing oil pressure. I broke my sending unit when I did my heads/cam swap and as I remember it started but showed no pressure which is when I discovered I broke it putting everything back together.

im-not-guilty

iTrader: (4)

This is a ls engine not a lt1 engine correct

gagliano7

I put a 2004 5.3 with a 1999 pcm in a 1992 chevy pickup and i have the trucks oil pressure sending unit installed. I have no oil pressure signal going to the pcm and truck runs fine.

moeZ28

iTrader: (7)

The pcm does not read oil pressure...only goes to the gauges.

badazz81z28

iTrader: (6)

Yup, PCM will work just fine.

sweet99ss

iTrader: (41)

Yes you can unplug it and it will still start

moeZ28

iTrader: (7)

Check all your grounds...especially on the back of the driver side head. There are two ground wires there, but there are 3 eyelets to be grounded, not two. Make sure you got all 3 or it wont fire.