Maxxforce 13 after treatment system

Denominator · Sep 13, 2014

demonduck said: ↑

My company has many day cabs in the fleet. 2010-2012. My truck alone has had the DOC replaced, both egr coolers, the front one twice, filter cleaned, dozer clogged, the check engine light came on after a force regen at the dealership 590 miles later. I yelled "########" yesterday after the code came up as another incomplete regen. Told them that was a false code and I wanted a filter % reading to prove it was false. I didn't even get a level 1 warning for those 590 miles after the force regen. They wouldn't do it, but, decided to start a case file for International. The plan is for me to come down and have a force regen once a week and drive it even if the check engine light comes on. I've been asking for the egr valve to be check to see how clogged it is. I know unless it's 90% clogged they won't replace it. I told them I've noticed after it rains within 24 hours the check engine light comes on, so where is the water getting in the wiring? The problem with this truck sometimes the level 1 warning comes on, but, it doesn't go to level 2 so a parked regen can be done. Mine is a 2010 and the issues started around 230k miles. Any suggestions?
2 of the other trucks 2011. Have to do a parked regen at around every 300 miles. I don't know how many parts have been replaced on those units. Any suggetions on those two? Thanks
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As to the first truck, the EGR Valve gets replaced if it fails an actuator test, not related to any clogging. The LT cooler gets replaced if it pops a low flow code, accompanied by a check engine light. The high temp cooler gets replaced in the event of coolant loss. Are you going through any coolant? That would be a good indicator.

The wiring problem sounds like an issue many Prostars had where the ECM bracket cuts into the engine harness. It will cause intermittent issues, but I havent seen one of those problems in a while. Also, leaking supply tubes to the EGR valve can damage the engine wiring, causing a check engine light.

Aftertreatment issues can be caused by issues upstream. Boost or fueling issues can both cause regen concerns. Are you experiencing a general loss of power?

demonduck · Sep 14, 2014

Both Egr coolers have just been replaced. They tried to return my truck last week. They again cleaned the DOC and did a forced regen. the code once again came up as incomplete regen. I said no way, thats a false code again. I stressed that I thought water was getting in the wiring and that we know the wiring is light weight. Plus the fact that exhaust stack had been taken apart at least 3 times. I had tracked the fact that after a heavy rain within 12 hours the check engine light would come on. They looked at it again. Found bad wiring on the wiring harness on the exhaust stack and found a bad sensor. They replaced that one and cleaned the other two. False information was being sent to the EMC. I got it back Friday and I hope that is going to work until the next part fails.

Randal Kennett · Jan 15, 2020

My 2012 DT466 goes into a derate mode after it has been driven a few miles and parked for a few minutes. Even tried locking in a high idle to prevent that. No luck. It leaves me stranded till the next day. Then it runs fine for a while but leaves me stranded most every trip. Service center cant find any codes that would cause this. Charged me $600 and did nothing.

Heavyd · Jan 15, 2020

I recommend an actual dealer with proper software.

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