My Truck Is An 04 5.9 Automstic Cummins Ram 3500. Truck Idles Fine But As Soon As You Put It In Gear The Truck Steps The Gas Up On Its Own To Make It Run Approx 20 Mph When You Come Up To Red Light You Have To Put Foot On The Brake To Keep It From Running Away But As Soon As You Shift To Neutral It Idles Down To Where It Belongs Need Help... Please

 

Do you have any codes?

https://www.dieseltruckresource.com/...s-t224833.html

Welcome to the DTR...

 

not Sure If This Is The Code Or Not But This Is The Number That Appeared In The Speedometer After Turning Key On And Off 3 Times

P0483. Is This What We Are Looking For And If So What Does It Mean? Thanks

 

Yes, that's it. Too bad it's only a fan speed error. Was that the only code you got?

Try unhooking both sets of battery cables and let it sit for 20 minutes. Before you hook the cables back up, press the brake, turn the key on, something to that effect, to ground out the system...

I'm stumped on the over revving only in gear... I'm thinking...

 

Isn't there a solenoid or something on the tranny that controls line pressure and etc? How many miles and what has been done to the tranny if anything?

 

Sound like an issue I had with a fuel injected gas motor in my 71 Blazer. Essentially, the torque converter I have is a very low stall speed. Too low really. Almost to where it will not unlock and wants to kill the motor during a stop and in gear. The fuel injection tries to compensate and bumps up the RPM and I have to really hold on the brake...

I am going to be changing the trans/torque converter soon there.

 

I was thinking the APPS, but I can't find anything to support my idea...

 

Sounds like what mine did when the torque convertor was having issues. Ended up with a new convertor, and a bunch of other parts in the trans.

 

can anybody tell me where i can find the list nof codes and whatb they mean??

 

http://wiki.dieseltruckresource.com/wiki/Computer_codes

 

Find codes here, but it sounds like a new tool to me.

 

I agree with this. I actually saw a 48RE with the same problem, shortly after a transmission rebuild. Was a definite converter issue.

 

THANKS FOR ALL THE RESPONSES. I HAVE 70,000 MILES ON THIS TRANSMISSION. I WAS NOT PULLING ANYTHING WHEN THIS HAPPENED. JUST TO MAKE IT MORE CLEAR THIS TORQUE CONVERTER IS NOT LOCKED UP. IT JUST WANTS TO CREEP ALOT MORE THAN IT SHOULD AT A RED LIGHT AS IF I HAD MY FOOT SLIGHTLY ON THE GAS PEDAL BUT WHEN YOU PUT IT IN NEUTRAL IT IDLES AT 750

 

throttle pos sensor?

 

If the torque converter were locked up then it would probably make the motor die when you come to a stop and hold with the brakes. Like not pushing in the clutch... Something else could be wrong with the torque converter though and it is acting "sticky" and your computer on the truck is stepping it up to keep it from dying.

What do the RPM's do when you shift from drive to nuetral? Do they shoot up a bit and then down to 750? As in, the computer/motor is stepping it up due to some converter load and when you shift out of gear, you get a momentary bump in RPM and then down to normal when in nuetral.