I have always gotten a random P0121 code usually I clear it and it comes back in a couple of months. 

 

But this time I caught it in action with my quad. When the dead pedal happens the quad show the throttle 100% open and stays that way till I push the throttle a couple of times. Has anyone else had this issue?

 

Also I need to do the W-T grounding mod. Hopefully on my days off coming up soon.

 

My fuel pressure is 15-16psi, checked for AC voltage 3 months ago and it was good (Will do it again before and after the grounding mod), and this has happened in hot and cold weather, short or long drives. 

Edited March 6, 20196 yr by 903Dodge

I would have to say it's probably your apps sensor, since you can see it showing 100% percent when it's actually not. Just a guess but if it was me that's probably what I would change, make sure you buy a Timbo, it's at the end of this article

 

Highly suggest Timbo's APPS. 

 

You current APPS is plain worn out. 

Ordered a Timbo. Hopefully that will fix it. 

Timbo app is installed. Pretty easy to do. We will see if that P0121 code comes back. 

Just an update. 

 

No more P0121. Since replacing the app my cruise control works flawlessly. Before it would either be no throttle or all throttle while cruise control was set.  

 

Drove it 700miles in 3 days and all is well. 

 

Thank you you for the help. 

Glad it worked out for you.