Butch329

My dad has installed a LS376 crate into an airboat. Everything has pretty much gone to plan with the exception of gauges and a couple DTCs. I've used my EFILive V2 to scan for RPMs, Oil Pressure, Engine Coolant Temp, and a few other PIDs. I'm able to read everything but RPMs and oil pressure through the scan tool, everything has been double checked as far as connections and hookups go. There is one sensor that has nothing hooked up to it, it is the sensor behind the starter, my father used the GMPP wiring harness.

The motor is also throwing two codes P0606 and P0335, which seem to coincide with the issues that he is having. The motor breaks down under swift acceleration, acting like its leaned out since it cant recognize rpm. Also most checksums have been disabled in the stock GM tune file.

Does this look to be an ecm issue, troublesome sensor or something I'm not thinking of?

JapCrap

iTrader: (1)

Thats your crank sensor...it needs to be hooked up.

Butch329

That's what I've read but my dad swears his GM harness didn't have it and his paperwork didn't mention it. I'm starting to think this was a Friday harness.

MuhThugga

The crank position sensor needs to be hooked up. I can't imagine the harness didn't come with that connection.

LS1MCSS

iTrader: (18)

I can't even imagine how the motor even runs without it being hooked up.

Kiwi_Camaro_2010

Sure that's not a knock sensor, thought crank sensor on other side of block, normally knock sensor on each side prob just in front of starter.

Kiwi_Camaro_2010

My bad, crank sensor is behind starter, was looking at my pic's of rebuild upside down on engine stand, doh!