sgosine577 Posted August 27, 2016 Share Posted August 27, 2016 Have a 2016 Mack Granite 1400 miles, with a regen problem. It will not do a passive regen which results in the filter getting clogged every 4 days. We average speeds of over 60 Mph. The check engine light came on and I took it to Mack. they said that it needed a regen although it did not request it. They did a forced regen and it did not complete. They do not know how to fix it. They have escalated it to higher level for advice to fix it. Quote Link to comment Share on other sites More sharing options...
fjh Posted August 28, 2016 Share Posted August 28, 2016 (edited) On 8/26/2016 at 5:39 AM, kscarbel2 said: Sorry man You have to give them time to get it sorted When truck dosent give up any codes it makes for a real witch hunt It can be any number of issues from the turbo sticking to low fuel pressure ! Hopefully teck support will help them with it! you must under stand that the computer dosent tell a guy everything! Just points a general direction and sometimes not even that ! The rest is an experience thing on the part of the teck! Edited August 28, 2016 by fjh Quote Link to comment Share on other sites More sharing options...
wiserfrombud Posted August 28, 2016 Share Posted August 28, 2016 Could be a lot of things obviously but the first thing that comes to mind is fuel. When the shop forced it through a regen, they should have been watching what was happening via the laptop. I would have started by observing if the 7th injector was functioning or not. No fuel = no heat = failed regen. You can watch the dpf filter temp as well from the software. Quote Link to comment Share on other sites More sharing options...
jcalesan Posted August 30, 2016 Share Posted August 30, 2016 if the truck won't complete a forced regen, then most likely the problem is in front of the dpf can. it could be the fuel dozer but not probable. I suspect that it will be cups and/or injectors. the mechanics will almost always overlook it and try to change sensors and everything else but ultimately it will be injectors. injectors won't throw a code but they will make every thing else code. have them test for air in the return lines. it's a quick test that takes less than an hour. good luck and I look forward to follow up. Quote Link to comment Share on other sites More sharing options...
kscarbel2 Posted August 31, 2016 Share Posted August 31, 2016 You have a new truck, under warranty, with just 1,400 miles. When you called Volvo Group's Mack brand customer satisfaction hotline (U.S. and Canada) at +1 (866) 298-6586 , what did they say? Quote Link to comment Share on other sites More sharing options...
sgosine577 Posted September 1, 2016 Author Share Posted September 1, 2016 Update. They reprogrammed the truck and did a forced regen. Engine light went off. Did a 100 mile high speed avg 70mph, and checked filter after the drive and it was 50 percent clogged. There were no active or passive regen during the 1 hr drive. MACK is putting the truck in intensive care. Escalating it to the highest level. Quote Link to comment Share on other sites More sharing options...
fjh Posted September 2, 2016 Share Posted September 2, 2016 Good call! post the fix! Quote Link to comment Share on other sites More sharing options...
kscarbel2 Posted September 2, 2016 Share Posted September 2, 2016 On 9/1/2016 at 10:40 PM, sgosine577 said: Update. They reprogrammed the truck and did a forced regen. Engine light went off. Did a 100 mile high speed avg 70mph, and checked filter after the drive and it was 50 percent clogged. There were no active or passive regen during the 1 hr drive. MACK is putting the truck in intensive care. Escalating it to the highest level. Particularly given you have a virtually new truck with a mere 1,400 miles, how are they compensating you for your loss of revenue for each day it is down? Quote Link to comment Share on other sites More sharing options...
sgosine577 Posted September 2, 2016 Author Share Posted September 2, 2016 On 8/31/2016 at 0:23 AM, kscarbel2 said: You have a new truck, under warranty, with just 1,400 miles. When you called Volvo Group's Mack brand customer satisfaction hotline (U.S. and Canada) at +1 (866) 298-6586 , what did they say? They loaned me the 2007 Mack I traded in, been using it for the last week. Today they wanted me to put a loaded rolloff dumpster on the truck and simulate an average work day, I told them it would not make a difference since it was clogging up at high speed. They are testing the fuel to see if it is contaminated and removing and cleaning the filter. I guess they will go from there. So far they do not have any clue as what is wrong. Quote Link to comment Share on other sites More sharing options...
fjh Posted September 4, 2016 Share Posted September 4, 2016 (edited) The engine has fricking fuel filters on it if the fuel was bad it would surly throw a code for plugged fuel filters grasping at straws or what! if the dpf is clogging that fast the engine is making to much smoke not getting air for regen OR the engine brake slaves a working loose causing an incomplete burn they really need to start digging instead of pissing around testing fuel! or the sensors in the can are out to lunch BUT thats the warranty way, need to jack around looking at silly stuff first! At least they gave you your truck to drive probably no thanks to Mack, the dealer is doing that out of kindness! hopefully they get it resolved this stuff is not mechanic friendly. KS made a good point WHAT IF they weren't able to lend you your truck back? Edited September 4, 2016 by fjh Quote Link to comment Share on other sites More sharing options...
sgosine577 Posted September 7, 2016 Author Share Posted September 7, 2016 The sent the Dpf filter to be checked and clean. They are also changing the 7th injecter. One item to note the engine brake was not working and they fixed it the first week. Quote Link to comment Share on other sites More sharing options...
fjh Posted September 7, 2016 Share Posted September 7, 2016 (edited) They wil need to do a valve set to check the slaves the indicator being a fair to descent valve set and a real tight engine brake set Edited September 7, 2016 by fjh Quote Link to comment Share on other sites More sharing options...
sgosine477 Posted September 20, 2016 Share Posted September 20, 2016 (edited) They said that the Mil light is no problen and that the buildup of soot is normal and the temperature has to be high enough fora a passive regen. They also said that active regen will only occur when the Ecm request it. So bring it back if the problem occur again and thet will keep it another month. Edited September 20, 2016 by sgosine477 Quote Link to comment Share on other sites More sharing options...
sgosine577 Posted September 29, 2016 Author Share Posted September 29, 2016 On 9/19/2016 at 10:09 PM, sgosine477 said: They said that the Mil light is no problen and that the buildup of soot is normal and the temperature has to be high enough fora a passive regen. They also said that active regen will only occur when the Ecm request it. So bring it back if the problem occur again and thet will keep it another month. I got the truck back 9 days ago and did 1300 miles so far. The soot level is near L1, average driving speed is between 35 to 70 MPH. When does the active regen start? Quote Link to comment 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.