white 03

So I swapped an 03 lm7 motor with an 05 l33 motor that had all the sensors. After putting my whole truck back together and started it I have no oil pressure. Are the newer oil pressure sensors a different impedance? Do I have to swap the them out? Or do I have a bigger problem?

whippled 8.1l build

if it aint knocking like hell you have pressure so swap the sensor if you can

white 03

So the sensors are indeed different? Or I have a bad one. BTW it looks like you have a nasty truck there.

whippled 8.1l build

to be honest i dont know that engine in all its entirety but if you had it before and it aint knocking then its got pressure so i would say bad sensor or wrong sensor.. if you know what it came out of do a search on any parts store and see if its the same part number..

love my truck but ditched the whipple and im working on a front mount turbo

Txblue

iTrader: (1)

I just swapped a 2005 engine in place of my 2001... The plug for the sensor was different so I used the one off my 2001 engine. I'd say if it plugs in you are alright. I'd try putting a manual oil pressure gauge on there just to verify

whippled 8.1l build

your original post says it was a 03.. if it was a 03 then 03-05 part numbers are the same but 01-05 are completly different.. swap the sensors

whippled 8.1l build

if you used the original sensor then maybe its bad.. does it knock when you start it??

white 03

It plugged in. When I first started it it was sorta loud it did quiet down a bit I'm just unsure I haven't herd it run in a while. My gauge reads absolute 0. It only ran for about 2 mins before I noticed it. (As i was paying attenition to other things under the hood) So I hope I didn't mess anything up. Where is the port for a mechanical gauge reading?

whippled 8.1l build

i ran my truck for 2 years with 0 pressure because my sending unit was bad.. if there was a noise after the swap and it went away i would venture to bet you have pressure but you can always pull the sending unit and put a mechanical in

white 03

I'll start small and change the sensors tomorrow. I'm now too thrilled about it being behind the intake. Has anyone changed it without removing the intake?