Hello men, I bought my 07 5.9 about a month ago without knowing its history, I should have done my homework but I got a good deal on it so I jumped, its got 139k, an Airaid cold air kit and no muffler, im having the wts light staying on problem and the truck has half the power when its on, I was told to have the batteries checked, they were bad so I replaced them, wts light still comes on, im also showimg 7 codes when I turn the key on 3 times, 1222 1223 0532 0533 0107 0073 and 0148, I know the 0532 and 0533 are ac issues as it isnt working at the moment but not sure about the others, I have searched them so I know what they are but not sure what to do next, the truck idles and runs great as long as the wts light stays off, no blowby and just a little puff of black smoke when I step on it, I would really appreciate any help I can take so hopefully its something I can fix so I dont have to spend a fortune at a dealer, thanks guys.

 

Figures I would have the question no one would be able to answer

 

I wish I could help you out. I have had the wts light issue myself. I have not experience the reduction in power though. I beleive there is a TSB out and it is a known issue. From the TSB it seems the problem comes from a fault in the ECM software updates. I dont know if there is a fix yet. But if you find out please pm me so we can fix the problem.

Read this:
http://www.cumminsforum.com/forum/3r...-problems.html

Scott

 

What have you figured out today so far in your researching? We're you able to resistance check your battery cables to get them eliminated as a possible problem (since batteries are good and low voltage severely irritates these trucks)? What are your fuel pressures?

 

I'm going to orileys and having the batteries and altinator checked shortly, hopefully the batteries are good since there a week old, then I'm going to clean and check all my connections, as for fuel pressure I'm not sure what I'm going to do, I'll have to find someone who knows what they are doing

 

I went by orileys, batteries and charging system are good, can't check the fuel pressure cause no one has a fitting, I'm going home to check and clean all my connections, and Friday I have an appointment at the dealer to have my computer updated/reflashed, they said it would only cost $30-35 to do that, seems cheap for a dealer but I'm not complaining

 

While you're cleaning battery cables, resistance test all the wires. If there is corrosion under the sheath then that eats away the conductor wire and resistance goes up. I don't have the thread on hand, but the way the batteries work in the system, they really need to have a good clear path.

 

How do I test the cables resistance?

 

With a multimeter, on the ohm/resistance setting. Put the red on one end of the cable and the black on the other.

 

Thanks, hopefully some clean cables and a reflash will solve my problem

 

Update. I cleaned all grounds, batteries and charging system are good, going to the dealer tomorrow for a re flash so hopefully this fixes my wts issue.