passive regen

[vinny933]

2019 granite , i have another post here where i found exhaust gasket leaking which seemed to help keep soot level in check . i took the truck to mack they said 7th injector was partially clogged and replaced it. so while there i had dpf filter cleaned 2 weeks later truck asked for a parked regen is this normal. mack says its fine as long as it completes regen. i had this truck since new 3 years never ask for a parked regen until this year. motor is still under warranty i want it fixed if there is something wrong   egr / turbo/ injectors. what to look for or tell mack to look at

     

[Joey Mack]

Onyx...  I have to say...   I hate these trucks...   However, when you 'Post'..  You are diplomatic..   This is an area where you can 'Shine'..   Keep getting smarter about these 'POS' trucks..  You will help so many guys here in the NEAR future..  Jojo

[vinny933]

could it be faulty delta pressure sensor even though i have no codes ? 

[Onyx610]

If it’s completing regens then all is good. It may be just where you’re driving at? Like stop and go….You mentioned in your last topic that when you took the turnpike home it did a passive regen. Passive regen is when the soot can be burned off through normal operating temps and steady driving speeds. No 7th injector needed. Only during active/parked regen. 

Edited December 31, 2022 by Onyx610
Spelling

[fjh]

Have you changed you air drier cartridge lately? If not do so! Wet air can take out the hi module! This is just a comment not a fix for your issue! It all could come down to where you were driving lately long drives heavy loads keep the regens away! As stated!

[Onyx610]

Ahi module is not needed during passive regen, it is completing parked regens where that does come into play. 

Edited December 31, 2022 by Onyx610
More info

[Onyx610]

Also almost always a fault code comes with a dosing block failure. 

[vinny933]

Thanks for the replies  it's just that I had this truck since new never had to do a parked regen until this year . Year 4

[Onyx610]

Have you been doing the same type of driving?

Edited January 1, 2023 by Onyx610

[vinny933]

Yes it's a dumptruck as matter a fact bin running dirt last 2 weeks non stop pretty much little idling.  Last 2 days stay just below the yellow line on soot level , went down just a little  on second day drove home went to park and parked regen needed came on

[Onyx610]

Is it mostly stop and go traffic?

[Onyx610]

Honestly if you don’t have PTT your just going to be throwing money/parts at something that I don’t believe is an issue. 

[vinny933]

Not really  just seems wrong to have to do a regen 9 days after getting  filter cleaned  at the dealer.  Feel like I pissed away 2300 dollars. It's the same roads same way of driving for 3 years of no parked regen. I can't be running asphalt this summer and telling contractors every couple of weeks hold on I need an hour for myself. Now I understand why people  delete this garbage 

[vinny933]

When all this started a few months back I got this code sa 16 dtc p042000. Friend of mine did a forced regen and code cleared and hasn't come back

[Joey Mack]

God Bless you Vinny.....   I wish there was a better way for you guys..  I WAS a truck mechanic for 25 years, and every time I see guys like you, with the frustration and High costs for repairs, I would kringe and Cry real tears, (On the Inside)...   So Sorry...  With respect.... Jojo

[Onyx610]

Guys delete these and 75% of them have more issues and way more expensive ones then they did before. You should hear the sob stories….Then come here looking for help because no one will touch their truck. I’m not gonna get into about how these engines are actually good, been there plenty of times. It’s just the guys that don’t understand them hate them. These trucks all have their issues doesn’t matter what make you buy. To be honest Mack/Volvo seem to have the least amount of issues. These trucks are what they are, would I prefer no emissions??Yes…However not the world we live in so we need to move on from that. If your completing parked regens then your after treatment system is more then likely ok. My suggestion to you is start loading it heavy and running the balls off of it and getting the temps up. If not start looking for exhaust leaks I guess. Or sell the truck and buy an RD etech or CV ASET. You will still find disappointments with those as well. 

[fjh]

Onyx! You are Totally  correct! (Hate to admit it 🙂) Crying over spilt milk! Got to get on with some sort of fix here if We can ! So again!  from my side walk super intendant point of view!  I have heard this compliant before! I remember the guys checking for boost leaks ,exhaust leaks  , another situation is the the 7th injector fouled  (they replaced that )and the Turbo starting to stick if I remember correctly also the diff sensor clogging opening the egr valve to much to compensate for the clog! in turn polluting the cat with more carbon hence a necessary P-R in very shot order! point is something up stream is likely causing the issue just got to find it! Look for any broken intake bolts just below the front where the EGR comes in , a crack in the intake manifold in that same area .just look for stuff you can find yoursellf! I'll refrain from mentioning all the pricey shit that could happen here and focus on the semi cheap and easy stuff!  I 'm sure Onyx and pro will set me straight here but you got to try stuff and look for stuff your self at times ! Another place to look for leaks is the flex from the turbo to the cat they crack a fare bit! The more expensive stuff  like  engine brake slaves protruding causing an in complete burn , injectors going bad Creating soot , turbo sticking . Long list ! Need to start ruling out stuff! 

[vinny933]

I'm gonna start with the bellows pipe after difuser pipe tomorrow maybe cracked under insulation. Just bothers me because it's still under extended warranty on engine and dealer tells me it's fine, gut tells me otherwise 

[Onyx610]

I see you’re from New Jersey. You don’t happen to be taking this truck to one of the Bergeys truck centers Jersey locations do you? When you had the dpf cleaned did you see what it looked liked before it was cleaned? Did they clean the doc? Go ahead and check all connections on exhaust and intake that you can. You may have an egr valve issue but we can worry about that later. 

[vinny933]

took it to gabrelli in rockaway

[Onyx610]

Id suggest talking it to bergeys for issues like this. 

[fjh]

4 hours ago, vinny933 said:

took it to gabrelli in rockaway

Keep us posted!

[vinny933]

I did a aftertreament test with ptt while doing I saw what appeared to be a leak around  the same spot where I. Changed  the gasket  on the defuser.  I ordered a new pipe. Gonna change both pipes defuser and bellow pipe . Had to order it 

[vinny933]

Ok I changed the pipe from the turbo back instead of just giving me fuel doser gasket they gave me the doser with gasket and bolts so i decided to change doser.do i need to do adaptive reset.. even tho mack had changed it a week before ? Did regen with ptt and it finished 

[Onyx610]

you should 

[Onyx610]

Anytime you replace a part you should. The 7th injector is high on the list like a turbo. 

Edited January 16, 2023 by Onyx610