Different oil pressure sensor plug. Just installed a vortec

[chicagochuck]

I just installed a a 5.7 vortec into my 99 Tahoe, the old motor locked up. I got almost everything put back together on the installed motor. I notice the oil senor the sensor near/under the distributor. Has a different plug. the one coming from my car is one pin the sensor on the motor is like a 3 pin.


I wish I Knew before i put it in, it would of made removing the sensor that much easier.

Is it simple as getting the 1 pin sensor and installing it or should I tap into the other plug and make it work with my 1 pin?


The guy I got the used motor from left all the sensors and plugs intact so I have the plug.

 

[Tonyrodz]

If nothing else is different and it's just a matter of the plug itself , to make life much easier I'd just swap the sensor out with the old one.

 

[chicagochuck]

Yeah seems the same the old 1pin sensor broke when I tried to remove it so Id have to get a new one.

 

[Tonyrodz]

I'd def do that. Me personally , I don't like hacking into a harness if I don't have to , too many things could go wrong.

 

[chicagochuck]

That's true. Do you know if it'll run with this sensor unplugged? Just inquiring. Or will it tell the computer that its no oil pressure?

 

[Tonyrodz]

Idk, but I'm guessing there'd be a built in safety that won't let it start if the pcm doesn't see oil pressure , but I'm just guessing.

 

[chicagochuck]

Dash lights come on but no crank no start.

Switched out the sensor , car will not crank. Iv never started the motor since I installed it. Everything seems to be plugged in after the swap I double checked all plugs.

The s terminal on the starter is not getting voltage to engage the starter motor.

Doesn't the s terminal wire run to the oil pressure gauge? I tried to feel back there and follow the wire.

When i turn the key forward and try to start it no pressure is displayed it sits at 0, then I turn the key to the off position the gauge will slowly go to about 20 psi.

Any suggestions?


I'm not saying the oil sensor is the culprit...