Chris01XJ

Oil pressure is maxed out today on the way to work this morning. Also throwing a EVAP code. Would a bead sending unit throw that code?? Engine is running fine though, temp is good and running smooth.

kjc

No, a bad sender won't cause any engine codes. They often leak or quit working properly, or both.
*An evap code is something else.. They can be caused by loose or leaking hoses or even just by opening the fuel cap with the engine running.
*Posting the exact code and what jeep you have might get you better answers.

Metmknice

Unplug oil sender wire, gauge should read zero.. ground it and it should go the other way. To verify oil pressure, run a mech. gauge. New sender is cheap enough.

tjwalker

You have two problems.

The first is most likely the oil pressure sending unit. They often fail "high side" when they die. I recommend purchasing directly from Jeep for the best reliability/accuracy/mating with your factory gauge.

The second is the evap code. Post the EXACT code number here for comment. There are a lot of evap codes and the devil is definitely in the details with OBD codes.

Chris01XJ

Well it was pegged out for two days at 80psi but now its sitting anywhere between 45-65 on and off the gas. I recently did the 784 injector swap as well and everything is running great so I dont think that has anything to do with it. Changed my oil about a week ago........but i can do that with my eyes closed so I doubt anything went wrong there.....Just got rid of another EVAP code not too long ago but that ended up being the seal on the gas tank where the fuel lines go in, wiggling itself loose and almost collapsing inside the tank. Dropped the tank and took care of that but ill check that again anyway.