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 Daniel Wilson Your Own Question
Daniel Wilson
Daniel Wilson,
Category: Medium and Heavy Trucks
Satisfied Customers: 1634
Experience:  Owner at DJ Wilson
65405794
Type Your Medium and Heavy Trucks Question Here...
Daniel Wilson is online now
A new question is answered every 9 seconds

I have a 2011 388 with a paccar 485 a fuller fro17210 and

Customer Question

I have a 2011 388 with a paccar 485 a fuller fro17210 and 370 rearends with 22.5 tires and I am only getting 4.3 mpg HELP
JA: What's the make/model/year of your truck? Engine type?
Customer: IT IS A PETERBULT(###) ###-####ITH A PACCAR 12.9L
JA: Anything else you want the truck mechanic to know before I connect you?
Customer: LACK OF POWER AND POOR FUEL MILAGE 4.3MPG
Submitted: 8 days ago.
Category: Medium and Heavy Trucks
Expert:  Daniel Wilson replied 8 days ago.

Hi my name is***** will be glad to try to help. Are there any fault codes logged in the ECM? Are you hauling heavy and all highway , city, or mountain terrain? Any color smoke you are having?

Customer: replied 8 days ago.
Highway, mountain, no smoke and not heavy even empty No power
Expert:  Daniel Wilson replied 7 days ago.

Any fault codes logged ? Check engine light on or coming on intermittently?