engine wiring diagrams

Hi,

Here is a link that explains how to check wiring. I'm adding it in case you want to check what's there. Even a loose connection at the O2 sensor can be causing this.

https://www.2carpros.com/articles/how-to-check-wiring

Also, I wanted to attach the powertrain management wiring schematics for you. I'm not sure how involved you got into the wiring. There are five pics below. They are in order, so hopefully, they will help. I did overlap each pic so you can follow from one to the next.

Check out the diagrams (Below). Please let us know what happens.

Hi, i need a diagram like this for 2003 Hyundai 2.7l v6 i have no pulse at injector #2, please.

Hi,

I have to ask a favor. I need you to start a new post. We try to keep this specific to one topic and vehicle type, so it is more helpful to others.

Here is the link to start the link:

https://www.2carpros.com/questions/new

Just request the powertrain management wiring schematic specific to your vehicle.

I hope you understand.

Take care,

Joe