AZHobo

Howdy, I've been researching dead pedal issues, but I haven't seen any similar to mine. I have an '02 3500 6speed with 10k on an extensive and expensive rebuild. In the last 4,000 miles or so I've been having problems with high idle after extended running and three dead pedal instances. After running the truck at highway speeds for 30 minutes or so the truck idles over 900 rpm, the longer the running at highway speeds, the higher the idle. After running for several hours it's idling at 1,150 rpm. If I shut the truck off and restart (after fueling, for example) the idle returns to normal. I've had three dead throttle pedal experiences after extended running. While driving the engine will cut to idle with no throttle response. All three times it returned to normal after shutting it down for 30 seconds then restarting. All three events were isolated - they didn't happen again during that trip. The engine has stout internals with a 62mm turbo, 100hp DDP injectors, Fass 150 and a Quadzilla programmer. The VP44 is original with 174k. I'm not a saavy mechanic, my skills are limited to oil changes. I haven't been watching full pressures, I will start keeping an eye on that. I also haven't checked for any codes as I don't have a reader handy. Quadzilla issue? or could this be a problem with the VP44? Any help is appreciated. Matt in New Mexico