Introduction Thread

[Rubiconxtreme]

I actually started out in 1995 casually with a YJ off-roading and picnicking until I got hooked and went to a 1998 TJ build and then an extreme 2005 LJ Unlimited build with a Hemi swap and Dynatrac 60’s and by 2007 I ended up with 3 Hemi Jeep builds and 2 non Hemi builds. 2010 went back to my one 2005 extreme build.

2021 I bought a 392 and kept it as a street princess and then bought a 2023 Anniversary to start with my exposure to Jeeps lies and learned to not believe or trust them.

I have not off-roaded either 392. In early 2024 I was going to sell both of them and was considering a AMW but decided to move to a 2024 for the upgrades because I decided to do an extreme 392 build.

I have had no issues with my 2021 and can’t keep 2023 Anniversary out of the shop to drive it.

First the Harness and plug on the electric steering pump arced and failed. Today I just took it back for the 3rd time because it throws a throttle body code and goes to limp mode. The dealer keeps putting all new parts and harnesses and can’t seem to resolve or even change the problem.

One of the service advisors today popped off and decided yo share that he had experienced this problem at a previous dealership and it was the exhaust cut outs were sticking and it was throwing throttle body codes.

Has anyone had any of these issues?

 

[guruman]

The sound changes pretty dramatically between exhaust open or closed. It should be pretty easy to tell if they are sticking. The system is pretty simple, and I think completely independent of the engine management. A small electronic valve in the engine bay controls vacuum running back to the valves. Passing vacuum back, closes the exhaust valves and the exhaust gets quiet. If the underhood valve closes, or if the engine is running WOT, there is not enough vacuum to keep the exhaust valves in the back closed, so they open and the exhaust gets louder. The system is pretty dumb and I do not think it's controlled or reported to the ECU/CAN bus at all. I suspect it would not cause throttle body codes.

Knowing the throttle body code might help.