Only way to find out is by pulling the codes with a reader. Also, check your fuses for the def header. If it's a freightliner, they are usually on...
If I am understanding this correctly, sounds like the valve on the firewall is leaking air when you press the brake pedal with the trailer brakes...
One of our trucks is a 2021 International LT day cab and I’m having an issue with the passenger side mirror only. The large mirror on top isn’t...
@Heavyd are these specs the same specs for the maxxforce dt epa07?
So how would someone search this up? Does it have to be a dealer? Or can it be found on navistar? If it is on navistar where would the alert for...
Ok, so my truck is still having the SCR issues. I called the local dealer and spoke to one of the guys I normally deal with there and he told me...
Gotcha! Thanks for the help and quick responses @Heavyd
@Heavyd
Ok awesome. So is this SCR issue an effect from the DEF header codes?
How do I know if the calibration was updated? Also, what do you mean isolate the ECM? As in disconnect the body controller? The ESN is 80114622....
Ok, so on Thursday 9/23/21 I calibrated the ECM from HD10301 to HD10688. All codes went away except for the 3 you mentioned. We let the truck run...
@Heavyd after you do the recalibration, what exactly is the truck showing on the dash? I recalibrated an ECM and now I’m getting an SCR fault and...
What engine do you have? If it’s a Cummins you might be in luck. They have an emergency recall for an ECM calibration. You have to call the dealer...
When you turn the key to the on position, normally it will cycle through the different positions. If you set your setting to the front vents,...
So there isn't an easier way to try to come from the top by pulling the dash apart or something? I just feel like this wasn't thought all the way...
HeavyD, How in the hell do you get access to the top actuator that controls the gears for the defrost/head/feet actuator? I believe there is an...
Update on my previous update: I figured out the problem for my truck with a MF13. After about 30 min or so it would take about 15-20 seconds to...
UPDATE: So after I posted my last message to you, I realized that the hpfp is brand new. Only a couple weeks old. I took the truck out for a test...
Hey HeavyD, How would I know if the fuel pump is getting weak and isn’t drawing enough fuel on its own? My truck with a MF13 will take about 15-20...
