89 7.3L Oil Pressure

kevbits · #1 (**permalink**) 02-16-2008, 07:48 PM

Hi everyone. I just installed a mechanical oil pressure gauge. Once I started the truck after i installed it my "engine" light came one. Could that be because the old wire is disconected?

My pressures are 38PSI @ 200RPM
12PSI @ Idle (750RPM)

Are those pressures okay for a truck with 410K miles

Thanks
Kevin

chris1066 · #2 (**permalink**) 02-16-2008, 08:17 PM

When I put on my mechanical gauge I installed a tee fitting and left the factory sender hooked up.

I have about the same psi you do and I have about 220,000 miles.

kevbits · #3 (**permalink**) 02-16-2008, 08:50 PM

I was going to put on a T fitting but my auto parts store didn't have any. I went to home depot and got one that fit but i didnt install it. I think it might of made my pressure look lower then it really is. Thanks

tjc transport · #4 (**permalink**) 02-16-2008, 08:57 PM

yup. the check engine light on the idi diesel only comes on if you loose oil pressure.

kevbits · #5 (**permalink**) 02-16-2008, 09:04 PM

Okay, thanks a lot. I guess i will just get a T fitting