Brad Carpenter Posted September 26, 2020 Share Posted September 26, 2020 Hi all I am stuck here hoping someone can help. I have a 2015 CXU613T with and MP8. I replaced the DPF filter with a new one had the DOC cleaned by our local Mack dealer. I installed a new AFT2 injector (it was leaking) and I have the Mack software in my pro link ultra. Im trying to reset the soot level and it says completed but still shows level at 132 percent? So the truck keeps calling for a parked regen I have let it do it several times as well as did a manual with pro link but nothing changes. When looking at the data I have 0.00 inlet pressure on DPF and 95.00 on outlet? I thought bad delta snsor and replaced it also blew shop air through tubelines and they are clear. But with new delta sensor numbers dont change. The truck also shows 0.00 ppm on NoX inlket and outlet on bank 1 and bank 2. I went ahead and replaced both NoX sensors and nothing has changed. The exhaust flow at the diffuser tip is strong and the engine runs excellent. Im sure that I dont have an exhaust restriction. Im at the point of sending it to our Mack dealer but wanted to see if anybody can shed some light on this for me, maybe im missing something?? Thanks Brad Quote Link to comment https://www.bigmacktrucks.com/topic/64371-regen-issues-mp8/ Share on other sites More sharing options...
fjh Posted September 27, 2020 Share Posted September 27, 2020 Can you check fuel pressure with the pro link?Low fuel pressure to the HI Mod. This issue can be so much more ,Anything from egr cooler restricted (Dirty) the sensor for mass flow on the venturi and venturi tube plugged Turbo partly stuck ! Sometimes you just got to start at the beginning ! Just sayin! Quote Link to comment https://www.bigmacktrucks.com/topic/64371-regen-issues-mp8/#findComment-461455 Share on other sites More sharing options...
Mackpro Posted September 27, 2020 Share Posted September 27, 2020 What’s the T2 ( center of DPF temp sensor) temp running ? We like to see around 880 degrees. High temps in the upper 950-990 can kick out the regen momentarily and resume. Quote Link to comment https://www.bigmacktrucks.com/topic/64371-regen-issues-mp8/#findComment-461467 Share on other sites More sharing options...
Brad Carpenter Posted September 28, 2020 Author Share Posted September 28, 2020 On 9/27/2020 at 8:31 AM, Mackpro said: What’s the T2 ( center of DPF temp sensor) temp running ? We like to see around 880 degrees. High temps in the upper 950-990 can kick out the regen momentarily and resume. It wont get above 600 Quote Link to comment https://www.bigmacktrucks.com/topic/64371-regen-issues-mp8/#findComment-461528 Share on other sites More sharing options...
Brad Carpenter Posted September 28, 2020 Author Share Posted September 28, 2020 On 9/27/2020 at 6:36 AM, fjh said: Can you check fuel pressure with the pro link?Low fuel pressure to the HI Mod. This issue can be so much more ,Anything from egr cooler restricted (Dirty) the sensor for mass flow on the venturi and venturi tube plugged Turbo partly stuck ! Sometimes you just got to start at the beginning ! Just sayin! I cant see that fuel pressure Quote Link to comment https://www.bigmacktrucks.com/topic/64371-regen-issues-mp8/#findComment-461529 Share on other sites More sharing options...
fjh Posted September 29, 2020 Share Posted September 29, 2020 18 hours ago, Brad Carpenter said: I cant see that fuel pressure This is a bummer ! If the 7th isn't getting good pressure it wouldn't make heat! Quote Link to comment https://www.bigmacktrucks.com/topic/64371-regen-issues-mp8/#findComment-461567 Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.