Yeah I need to check this. I think this is what Wore Out was talking about, so I'm foresure gonna look for a puff or fog of white smoke. Thanks...
OK great insight, I will look for a white puff of exhaust next time I hear it. I'm gonna pull the stack/muffler also to make sure the rusted out...
OK now that you mention it, I have noticed a "movement/vibration" at my feet on the floor. Thought it was a worn shakle, but I will check the...
Yes standard trans, and started right after "software update", NOT after new injector harness, injectors and ECM. I do have a bad hole in muffler...
Will do, that sounds like a good starting spot. Thank you.
Hey Guys and Merry Christmas! I got a 1999 Freightshaker Century 12.7 S60. Recent work includes: new injectors and injector harness, new ECM...
Well, as you guys were saying, it was that reward system that was causing the issues on the reman ECM. Freightliner reflashed the ECM and I’m...
I stopped by Freightliner and the Service Manager agreed that it sounded like the parameters were set up with Reward Specs. I will bring the truck...
Hey Powder Joints, what’s that mean please?
That sounds almost exactly what’s going on. I typically run 2 roads from Shreveport, LA to Lubbock, TX. The truck starts at 67 mph, after 15-20...
This could be it, even though the MPG is about the same as before when I was doing 72 constantly loaded/empty. 6.3 mpg previously / 6.5 now.
That’s what I was thinking, but it only gets to 72 when bobtail or rarely loaded. Seems like if it was missed programming, it wouldn’t get back to 72.
Yeah, so I wonder why I can only go 67 MPH right after starting truck, but occasionally 72 MPH after a bit. I changed TPS, didn’t help.
1999 Freightliner Century S60 12.7 -just replaced all injectors, injector harness, ECM, TPS sensor. Truck before Freightliner repairs had top...
That’s the only problem, they didn’t ask me about top speed preferences or limits. Getting about same fuel economy as with old injectors at 6 mpg...
No smoke, and no faults. The TPS sensor is a great idea. Gonna try replacing it since I don’t have the DDDL software. Great idea, thank you...
Hey Guys, 1999 Freightliner Century 12.7 DDEC 4, pre-emissions. All injectors, injector harness, and ECM replaced. I have done 2 identical...
You Sir won the challenge. Unfortunately I lost $9K to Freightliner doing the injector harness and full set of injectors first, then an extended...
Thank you for the response JB7. I went to Freightliner today to get some tools out of the truck and advised the mechanic of the troubleshooting...
Hey Guys, So I have 1999 Freightliner Century 12.7 series 60. Keep getting an intermittent CEL and code 61 (on cylinders 1, 3, 5) which results...
