Engine/Transmission (1998.5 - 2002) Has Anyone Ever Figured this out ?

[DieselMinded]

When its cold out ,,,and you first fire the truck up and put it in Drive the RPM's drop way off and the truck almost dies



Some say its because of the extreme pressures created from a built Valve body



Other say its from the timing advacement on the comp clashing with the timing being advanced from the ecm while below engine operating tempature



some say its the VP44 goodbuy speach



Some say its a Weak LP in stock location but the pushers making your FP reading look good ???



I had this problem then fixed it when I put the Vulcan kit on ,,,, then when i upgraded my injectors it came back ,,,,then it was fixed by running with the comp off ,,,,,,then that didnt work anymore ,,,



I cannot pin point whats going on with this and there are about 500 threads here on TDR with people complaing about the same stuff



One common fix givin was the cold weather reflash ,,,, to my under standing if you do this your idle is increased big time and even in the summer its idleing real high,,, IMO a high idle is not a fix for whats hapopening its just making it bareable



Anyone have a clue on this ?



If I have to go broke and get the AIR DOG to fix this then thats what i will do I hate this about my truck !



DM

 

[AKAMAC]

DM, this one is so easy... It is all about latitude adjustment. When it warms up enough to start the beast, point the nose of the truck in a direction where the compass shows "S". Drive for about 12 hours and find a job! Wa-La, cold start problem fixed!



Sorry I couldn't help myself. Mike

 

[Huff N Puff]

Its cause the air is to cold to fire of the fuel

When its cold out ,,,and you first fire the truck up and put it in Drive the RPM's drop way off and the truck almost dies



Some say its because of the extreme pressures created from a built Valve body



Other say its from the timing advacement on the comp clashing with the timing being advanced from the ecm while below engine operating tempature



some say its the VP44 goodbuy speach



Some say its a Weak LP in stock location but the pushers making your FP reading look good ???



I had this problem then fixed it when I put the Vulcan kit on ,,,, then when i upgraded my injectors it came back ,,,,then it was fixed by running with the comp off ,,,,,,then that didnt work anymore ,,,



I cannot pin point whats going on with this and there are about 500 threads here on TDR with people complaing about the same stuff



One common fix givin was the cold weather reflash ,,,, to my under standing if you do this your idle is increased big time and even in the summer its idleing real high,,, IMO a high idle is not a fix for whats hapopening its just making it bareable



Anyone have a clue on this ?



If I have to go broke and get the AIR DOG to fix this then thats what i will do I hate this about my truck !



DM

The air temps need to approach 500 degs to fire of the fuel. When its barely hot enough to fire of the fuel it may almost stall when you load it cause you slow the piston down and may not compress the air fast enough to heat the air up.

 

[Dodgentwo]

Are you letting it warm up or just jumping in it and putting it in drive? If you do not let it warm up it will do this. Mine is a 5-speed, but if you jump in it and hit the peddle before it is warm it will die.

 

[JoshPeters]

DM, this one is so easy... It is all about latitude adjustment. When it warms up enough to start the beast, point the nose of the truck in a direction where the compass shows "S". Drive for about 12 hours and find a job! Wa-La, cold start problem fixed!



Sorry I couldn't help myself. Mike

Shoot, If that was the case, I'd still be in the "cold" states! I'd wouldn't even be able to make it to where DM is!



Seriously... . I'd shoot Duluth Diesel, Spicy Jam, or look around for someone that is around the sever cold. I know Duluth Diesel has the cold weather flash, but a 6spd. I belive Spicy is in the same boat. As far as 24v Auto trucks, off the top of my head, I can't really think of any. But I know Duluth Diesel has the cold weather flash. He would give you a good solid opinion on before and after.



Josh

 

[nps]

Throw a 6 speed behind your motor. That way when it stalls you can blame your clutch skills.

 

[Cummins Thunder]

High idle it for a minute or so before loading it down.



CJ

 

[SnoKing]

When its cold out ,,,and you first fire the truck up and put it in Drive the RPM's drop way off and the truck almost dies



Some say its because of the extreme pressures created from a built Valve body



Other say its from the timing advacement on the comp clashing with the timing being advanced from the ecm while below engine operating tempature



some say its the VP44 goodbuy speach



Some say its a Weak LP in stock location but the pushers making your FP reading look good ???



I had this problem then fixed it when I put the Vulcan kit on ,,,, then when i upgraded my injectors it came back ,,,,then it was fixed by running with the comp off ,,,,,,then that didnt work anymore ,,,



I cannot pin point whats going on with this and there are about 500 threads here on TDR with people complaing about the same stuff



One common fix givin was the cold weather reflash ,,,, to my under standing if you do this your idle is increased big time and even in the summer its idleing real high,,, IMO a high idle is not a fix for whats hapopening its just making it bareable



Anyone have a clue on this ?



If I have to go broke and get the AIR DOG to fix this then thats what i will do I hate this about my truck !



DM

Check the TSB 18-014-01, I think this one covers it. SNOKING

 

[Devil Black Diesel]

Mine started doing the same thing when I bombed it but mine does the opposite - it only does it when it's hot out in the summertime. When I start mine in the morning when it's cold it never bucks or surges... . but when it gets warm in the summertime I'm bucking and surging all the time when shifting into D or R... sometimes it stalls, sometimes it doesn't but it always bucks/surges... . i. e... . when I shift into D or R it cuts out for a second and almost stalls and then it comes back with a big spike in RPM's as if I blipped the throttle with my foot... people sure do look at you strange when you're in a parking lot and it's very embarrassing sometimes because people think I'm trying to show off or something by blipping my throttle but the truth is that my foot is on the brake, not on the throttle...



I've tried everything:

-Waiting longer before shifting into gear

-shifting to nuetral first, then shifting to D or R

-comp on, comp off, comp disconnected

-TSB winter flash (this actually helped the stalling a little)

-changing injectors

-adjusting APPS

-cleaning all electrical connections/grounds,etc



Who knows what causes it. If it's hot and my AC is on and I'm turning my steering wheel I'm guaranteed a stall..... what could it be?



Could it bee too much FP to the VP? At idle mine is 22-24psi. I know there are tons of guys out there with the same problem but no one seems to be able to figure it out.

 

[DieselMinded]

How much is a reflash if your are your own warentee station ???



I got a remote start and let it run for about 10-15 mins before I get in ,,,, as soon as I put it in drive ..... IT NOSE DIVES BIG TIME and just about dies it has never completely died THO,,, I will try reving it up for a few seconds before I flip it in to droive and see if it fixes it thanks guys



DM

 

[Devil Black Diesel]

I paid the dealer $90 to reflash mine... .

 

[DieselMinded]

I know there are tons of guys out there with the same problem but no one seems to be able to figure it out.

Exactly



Did it fix the RPM DROP ISSUE ??



DM

 

[Devil Black Diesel]

Nope, the flash just helped with the stalling a little... . it still dives & surges all the time when I shift into D or R.

 

[DieselMinded]

Ok then I guess I dont want the reflash for this reason . .



I Fired it up let it idle for 20 mins got in reved it up a few time held it at high idle for 30 seconds let it return to normal put it in Drive and it was one droplet of Diesel away from dieing







So High Idle --- NOPE



Re-Flash -- NOPE



Any more ideas guys ???



My FP is 15 at fire up and 21 when warm . .



My factory LP may be on its way out tho ,,, it only had 7 psi and 0 WOT before I threw on the Pusher ,,,



What Now ?



DM

 

[DTrader]

Just a thought. TCC acting up?

 

[nutter3]

I think its normal. (The RPM drop-not the dying). When my truck was brand new, it would die sometimes when shifting into gear. Heck it even dies sometimes after having been driven and was warm. The dealer reflashed it, also telling me it is related to the winter blend of fuel up here???? That cured it mostly. When I got a new ATS converter and valve body, it seemed to increase the amount of rpm drop and sometimes it would die. I think it is just because it is a little tighter than stock?

When you shift into gear, that HAS to take some power from the engine as fluid is changing paths inside there.

 

[DieselMinded]

Ok so it could be the Extreme Vb pressures Im running ,,,, How ever it dont do it every time so ...



It could be the fuel or maybe the fuel additive ... ... Hummm



I run all types and not all the time either . .



I will stick to one on a schedule and see if it fixes it ,,,, it may of straitened up with a certian type of additive in the past ... Interesting



DM

 

[Devil Black Diesel]

DM, mine does it during the hot weather in the summer so there goes the winter fuel blend theory...

 

[DieselMinded]

Yours is the first case ive heard of that it was backwards , Do you run a fuel additive ?



We need to do some tests and get a Written In stone answer for whats going on here .



It didnt do it stock Tho ????? So you wouldnt think that it could be fixed with fuel additives So It must be bomb related ??



Ill still be running some redline for a few weeks



DM

 

[Devil Black Diesel]

No fuel additives here, just straight diesel.



I've talked to several guys out here on the west coast who have the same problem as I do in the summertime... . It must be Bomb related symptom and you're probably just going to have to live with it. Do a search for "Stalling when put into gear" and you'll find more info.