THOUGHT THIS WAS THE PROBLEM ON MY 99 2500 BOUGHT NEW ONE 480.00 LATER STILL HAVING PROBLEMS THE PEDAL WILL NOT BE RESPONSIVE  JUST OUT OF NO WHERE YOU CEN LET THROTLE AND PUSH CLUTCH  AND IT WILL GO FINE UNTIL NEXT TIME YOU NEVER KNOW WHEN IT WILL DO THIS I NEED HELP IF ANYONE HAS COME ACROSS THIS PROBLEM  

Well first of all, have you checked for codes? Most parts shops will read the codes for free. Usually they just give you the numbers and you'll have to look up the meanings. Also does it do it while the cruise is set?  

you may need to reset your APPS sensor or you may have a bad APPS, my 98.5 24 valve done the same thing, ended up needing the new APPS sensor.  

it is not throwing any codes and it does it on cruise also the new app sensor did not fix it  

IF it does it on cruise then its not the APPS. You have a 99 and therefore can't check for codes with the keyswitch method. Did you actually have the codes read or are you just going by the CEL? IT seems odd to me that it's not throwing any codes when it does this. Does your tach quit when the engine dead pedals?  

i got the same problem with my 02'. no codes at all but i lose complete throttle response while it is warming up and with the pedal at a constant speed.  

Yeah mine too! I have an 02 2500 and it does the same thing mostly while warming up and during steady speed driving when you want to accelerate! What the fug is causing this? Very frustrating and NO codes!
Though about the TPS but glad someone else found this wasnt the problem as the cost is sky high! Dont have deep pockets like some so its a pain in the ass.
OK DIESEL PROS, WHATS THE CAUSE OF THIS APPARENTLY VERY COMMON PROBLEM?????      

i have been told a clogged fuel filter, by the way mixer mine does the EXACT to the T same thing. i have also been told tps, apps sensor is bad or shorting, computer need to be reflashed? so i have no *** clue what it is. i replaced my filter , no change. mixer, you got a stock turbo on that cummins, auto or manu?  

i just said F U C K it and bought new injectors and turbo instead. i can deal with the dead pedal  

got the same problem with mine and was about to order the tps and run into a old diesel guy and he said it would be the map sensor i was like no way but yes he said if the map sensor does not read right it will cause it to no shift right mostly cold mine even started doing it while warmed up and it would start to surge he was like thats it order one should be here monday for the 1999 its under $90 dollars for my 01 its $155.00 big difference but if it stops it i"ll be happy. By the way mine never through a code either not even when it was hooked up to the computer while driven  

you got a new map sensor? that threads into the block?  

yes i installed it today its 155.00 dollars so far i drove the truck a little this afternoon after i put it in it seemed to do fine i will write back if the problems return  

Yeah Its a stock turbo and most every thing else except 4" turbo back exhaust. Its NOT a SHIFTING problem its a problem with no throttle response mostly when cold/warming up and during steady speed driving. When it does this during steady speed driving if you press the pedal all the way to the floor it will respond or if you temporarily take your foot off the pedal then push back down it will respond.
It sounds like a VERY common problem with these 24 valves,
Somebody has to have found out what the *** is causing this,dont want to buy unneeded expensive parts if I dont have to.     AAAAAAAAAHHHH!!!!!    

i know it isnt a shifting problem. i went with scott and thought i was my map sensor. just installed a new hx40 yesterday and decied to see if the dead pedal went away. it didnt. so i went and bought a new map and iat sensor, gone. the problem went away. aparently, the map sensor sends false reads to the ecm that causes the dead pedal. got me, but i went away. by the way, my map sensor and iat sensor, new, from dodge, was less than 155.00 combined.  

what is a iat sensor mine was 155 its less than 90 for a 99 model i would have thought it would be more for a 02 model