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?
Maxxforce 13 after treatment system
Discussion in 'International Forum' started by demonduck, Aug 23, 2014.
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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.
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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.
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I recommend an actual dealer with proper software.
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