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 go-west.. Your Own Question
go-west.., Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 1131
Experience:  Technican with 20 years experience focused on engines and electrical.
Type Your Medium and Heavy Trucks Question Here...
go-west.. is online now
A new question is answered every 9 seconds

Having a fault code 311 on a '99 Cummins N14 CelectPlus. It

Customer Question

Having a fault code 311 on a '99 Cummins N14 CelectPlus.
It was initially a fault code 431 but I found one of the two connectors loose from the accelerator pedal. Plugged it in and now the fault code 311.
Truck still runs fine but is de-rated.
Submitted: 3 months ago.
Category: Medium and Heavy Trucks
Expert:  go-west.. replied 3 months ago.
Good evening
The 311code is for #1 injector
This will definitely give a derate
Let me know if you have any other questions
The 311. Usually is the injector itself.
Customer: replied 3 months ago.
The stop engine light went off today but the engine is still de-rated as it has been.
I would think if it was an injector problem there would be signs such as missing and black smoke. Not the case and still runs like a champ.
I'm leaning towards the accelerator pedal sensor being bad.
Expert:  go-west.. replied 3 months ago.


but that 311 will probably stay active

let me know if you have anymore questions

Related Medium and Heavy Trucks Questions