No turbo when cold

AWNdiesel · 07-24-2008, 08:56 PM

Hello everyone, I have a 2001 2500 quad cab with a 5 speed. I am not a tech but have some understanding of the workings of diesels. My truck will not kick in the turbo until it reaches about 155 or 160 degrees. After that it goes like a raped ape. When cold it will fall right on its face and barely run. Any suggestions?

pete37922 · 07-24-2008, 09:06 PM

probably a safety thing...the ford wrecker i drive can only go so fast till it reaches operating temps !!!

kevin95695 · 07-24-2008, 09:09 PM

Where are you located? I'm an idiot, but is it possible your oil is gelling?

__________________
'05HO3500qc/sb4xauto4.10icebox/EAAU4091filter/toob/ silencer:MIA 5"pipe w/dynaflex+6"tip edgejuiceattitude+gauges/striker2: Now go put on the helmet.

rthrbelsewhere · 07-24-2008, 09:33 PM

I don't know about the 01's, but i know one of the reprograms i had done to mine had a "turbo-saver" feature that was kicked on. It does exactly that now, the turbo is silent until it reaches whatever the parameter is and then once it's there, i got my air whistle back.

So it's probably normal, gotta let them warm up or they are rolling doorstops. Go easy on it when it's warming up, you don't want to wash the cylinders.

__________________
'06 Inferno Red 2500 QC, Auto, 285 70 17 BFG AT KO's, Century Ultra Topper, CoolPipe, Icebox w/4091, Amsoil's in da pumpkins and xfer case.

Dad · 07-25-2008, 04:25 AM

Boost follows fuel, so your lack of boost when cold means the it's not fueling. Did this behavior just start, or has it always been that way? Checked for codes?

__________________
High Rider: 98.5 Ram 2500 4x4, 5 Spd, SB 13", A3000 turbo, DDP Stage 3 sticks, studded, 4" TB,, AEM Intake, Gauges, FASS95, S-Chips Tune
Low Rider: '06 Chevy 1/2 Ton, Victory Red, 2/4 Drop, roll pan, sport mirrors, rollin on 20's

AWNdiesel · 07-25-2008, 05:14 AM

It has been this way for a while but it did not always do it. I do not run the truck that much and it just started acting this way one day. Also when it is cold it smokes like crazy until it is warm.

totalloser · 07-25-2008, 07:05 PM

The fact that it smokes indicates it's getting the fuel. I would consider doing a "motor flush" it cleans all the oil systems. I am making a guess that the truck has been shut down too many times with the turbo hot, and the heat has burned up enough oil in the bearing to have the "coke" binding up the bearing. A motor flush will clean all the deposits out of the pressurized oil system, and perhaps make your turbo function. If not, I would guess the bearing is smoked from shutting down with the turbo spooled, causing wear from spinning on a dry bearing.

A simple way to see if the turbo is sticking, is to pull the air cleaner boot to the turbo inlet off, and see if it spins freely when cold.

If you do a motor flush make SURE to follow the instructions. The stuff thins the oil, and can scatter your bottom end if you load the engine up with it in the oil. Fantastic product, though. I have seen it bring compression up substantially by cleaning out carbon deposits from the ring grooves, and oil pressure come up notably. Good stuff to run through before an engine overhaul, too. Saves a LOT of parts cleaning effort.

__________________
01 3500 24v big shaft nv5600 241HD 60/80 lsd. six 35's stage 3 jammers, 4" SS behind BD brake & pulse K&N Dual carters on relays, Homebrew steering stuck to tapped box, 1.5" ram, BD box stabilizer Ugly, black and thrashed.

07-24-2008, 08:56 PM	#1 (permalink)
AWNdiesel Newbie Join Date: Jul 2008 Posts: 2 AWNdiesel's Truck Pics	No turbo when cold Hello everyone, I have a 2001 2500 quad cab with a 5 speed. I am not a tech but have some understanding of the workings of diesels. My truck will not kick in the turbo until it reaches about 155 or 160 degrees. After that it goes like a raped ape. When cold it will fall right on its face and barely run. Any suggestions?

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07-24-2008, 09:06 PM	#2 (permalink)
pete37922 Cummins Enthusiast Join Date: Sep 2007 Posts: 276 pete37922's Truck Pics	probably a safety thing...the ford wrecker i drive can only go so fast till it reaches operating temps !!!

07-24-2008, 09:09 PM	#3 (permalink)
kevin95695 Cummins Enthusiast Join Date: Apr 2007 Location: Woodland CA USA Posts: 241 kevin95695's Truck Pics	Where are you located? I'm an idiot, but is it possible your oil is gelling? __________________ '05HO3500qc/sb4xauto4.10icebox/EAAU4091filter/toob/ silencer:MIA 5"pipe w/dynaflex+6"tip edgejuiceattitude+gauges/striker2: Now go put on the helmet.

07-24-2008, 09:33 PM	#4 (permalink)
rthrbelsewhere Cummins Nut Join Date: Jan 2007 Location: Greeley, Co Posts: 340 rthrbelsewhere's Truck Pics	I don't know about the 01's, but i know one of the reprograms i had done to mine had a "turbo-saver" feature that was kicked on. It does exactly that now, the turbo is silent until it reaches whatever the parameter is and then once it's there, i got my air whistle back. So it's probably normal, gotta let them warm up or they are rolling doorstops. Go easy on it when it's warming up, you don't want to wash the cylinders. __________________ '06 Inferno Red 2500 QC, Auto, 285 70 17 BFG AT KO's, Century Ultra Topper, CoolPipe, Icebox w/4091, Amsoil's in da pumpkins and xfer case.

07-25-2008, 04:25 AM	#5 (permalink)
Dad Administrator Join Date: May 2007 Location: Indiana Posts: 3,881 Dad's Truck Pics	Boost follows fuel, so your lack of boost when cold means the it's not fueling. Did this behavior just start, or has it always been that way? Checked for codes? __________________ High Rider: 98.5 Ram 2500 4x4, 5 Spd, SB 13", A3000 turbo, DDP Stage 3 sticks, studded, 4" TB,, AEM Intake, Gauges, FASS95, S-Chips Tune Low Rider: '06 Chevy 1/2 Ton, Victory Red, 2/4 Drop, roll pan, sport mirrors, rollin on 20's

07-25-2008, 05:14 AM	#6 (permalink)
AWNdiesel Newbie Join Date: Jul 2008 Posts: 2 AWNdiesel's Truck Pics	It has been this way for a while but it did not always do it. I do not run the truck that much and it just started acting this way one day. Also when it is cold it smokes like crazy until it is warm.

07-25-2008, 07:05 PM	#7 (permalink)
totalloser Cummins Nut Join Date: Oct 2007 Posts: 437 totalloser's Truck Pics	The fact that it smokes indicates it's getting the fuel. I would consider doing a "motor flush" it cleans all the oil systems. I am making a guess that the truck has been shut down too many times with the turbo hot, and the heat has burned up enough oil in the bearing to have the "coke" binding up the bearing. A motor flush will clean all the deposits out of the pressurized oil system, and perhaps make your turbo function. If not, I would guess the bearing is smoked from shutting down with the turbo spooled, causing wear from spinning on a dry bearing. A simple way to see if the turbo is sticking, is to pull the air cleaner boot to the turbo inlet off, and see if it spins freely when cold. If you do a motor flush make SURE to follow the instructions. The stuff thins the oil, and can scatter your bottom end if you load the engine up with it in the oil. Fantastic product, though. I have seen it bring compression up substantially by cleaning out carbon deposits from the ring grooves, and oil pressure come up notably. Good stuff to run through before an engine overhaul, too. Saves a LOT of parts cleaning effort. __________________ 01 3500 24v big shaft nv5600 241HD 60/80 lsd. six 35's stage 3 jammers, 4" SS behind BD brake & pulse K&N Dual carters on relays, Homebrew steering stuck to tapped box, 1.5" ram, BD box stabilizer Ugly, black and thrashed.