How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask sprinkles08 Your Own Question
sprinkles08
sprinkles08, Chrysler/Dodge/Jeep master tech
Category: Dodge
Satisfied Customers: 22278
Experience:  ASE Master and Advanced Certified, Chrysler/Dodge/Jeep Master Certified, Trans and Hybrid Specialist
9825021
Type Your Dodge Question Here...
sprinkles08 is online now
A new question is answered every 9 seconds

Ram 3500: 2005 Dodge Cummins 5.9. Very slow to spool up and

Customer Question

2005 Dodge Cummins 5.9. Very slow to spool up and while doing so just spews black smoke. Fuel pressure is within spec, Turbo is brand new and 6 new injectors.
I tried reflashing the computer with the latest file, but each time is tells me that there was an error while programming. I have tried this 3 times now.
Any suggestions. I am a mechanic, but not a diesel expert.
Submitted: 1 year ago.
Category: Dodge
Expert:  sprinkles08 replied 1 year ago.
Hello and welcome to JustAnswer!
If it's smoking and feels as if there is no boost but the turbo is new then I would first suspect a boost leak, boost pressure sensor or wastegate actuator control circuit issue.
Most issues that will cause low boost will set a code. Have you checked for fault codes?
Has the intercooler system been checked for leaks? If so, how?
Customer: replied 1 year ago.

Absolutely no code The turbo, waste gate and actuator are all new.At RPM I have tons of boost. It just takes forever to spool up and spews black smoke. The pressure sensor PID agrees with my mechanical boost gauge.

I have smoke tested the entire intake system. No leaks. Is there any telltale PID that I could check for?

Expert:  sprinkles08 replied 1 year ago.
At the time you believe there is low boost is it producing what the engine controller is commanding?
Customer: replied 1 year ago.

You mean boost pressure?

Expert:  sprinkles08 replied 1 year ago.
Yes.
Customer: replied 1 year ago.

I don't remember the readings. Let me scan tomorrow and let you know. You don't think the ECM is commanding too much fuel?

Expert:  sprinkles08 replied 1 year ago.
It's unlikely that it's commanding too much fuel, that also wouldn't explain a lack of boost.