Regen issues international

Here is something hard to find, I drive a 2012 prostar eagle plus with currently 583k miles on it with a maxxforce13. Despite all the horror stories, and yes I have some, I like it a lot. We have had major issues however since we bought it at almost 500k miles. Here are some things to consider. The fan is oil driven instead of belt, when the seal blows...boy does it blow. It costs about 6k to convert it to belt driven...and make sure the dealer programs the ecm to dual speed fan instead of variable or it will short cycle like crazy. Also we had a ton of dpf regen issues. Dealers act they they are clueless, spend close to 4k on nonsense (however our company had baked the dpf at 380k but not changed the ecm date to reflect this). Yes like old cats that has to be changed or problems won't go away . we would regen once or twice a day. The first dealer did two forced regens , proclaimed it fixed and within 2 hours we were on the side of the road doing another parked regen. Well after 3 dealer visits (we did find an exhaust leak which helped but didn't solved the issue) I grew tired of dealing with dealers and did several days of googling and watching how the dpf with no def system works. I concluded that the doc is most likely the culprit. I'm no mechanic but I do shade tree mechanic work on classic cars so I'm no idiot. I bought the road warrior aftermarket doc from advantage truck parts. It ran 1610.00, then I bought tape from the dealer for 60.00 and the gasket for 5.00 from the dealer. Took it to a small repair shop and had it replaced for 385.00. Now the international wanted 2600.00 for the part plus a 1300.00 core deposit, 250.00 ecm analysis and 4 hour labor charge for around 900.00. Hell No. Anyway research showed me that docs last (in these models) from between 400k-600k miles so why the dealer wouldn't check that sooner idk. Since the exhaust leak was fixed and the doc replaced no issues. There is not a lot of info on docs only the dpf filters so just spreading my findings...maybe it will help someone.

 

In service maxx some big bores allow you to reset the aftertreatment filters in the computer, so the ECM knows they were removed and cleaned, or removed and replaced, many many people neglect this step. I am suprised to hear of one of those motors making it past 400k. The original fan drive was driven off of the belt system, but had an oil fed bearing in the middle that would fail and push oil out of the front. It was a lot of work to replace, the new system from what I saw in passing the other day visiting my buddy at my old dealer, seems to create a seperate belt drive setup, and then is an air actuated clutch

 

Your fan drive is indeed gear driven, not belt, not oil. Look all you want, there is no belt driving it. Yes, there is now an expensive kit to convert the low mount (gear driven) fan to a high mount (belt driven) type because the fan drive and clutch is another design disaster on these. Like Jeep said, there is a bearing in the nose cone that is oil lubed by full engine oil pressure, so yes, when that end seal lets go, it blows oil all over.

I always caution customers before they buy a Prostar with a MF 13 with any more than about 300k on it. This is where stuff really starts to go down hill fast. Guaranteed EGR cooler failure and EGR valve failure some time around this mark. If you buy a used truck and these have never been done, then get ready. As for the after treatment, I can go on and on. Seems a lot of owners and companies do not do regular maintenance on anything and just let it go until you have regen problems before they do anything about it. Many times it is now too late. There are several components that have to work perfectly in order for a regen to work perfectly. DPF is just one component. You are probably exactly right in that the DOC is degraded to the point it will no longer do a proper regen. We have several dozen lease units that every year at safety inspection time, we totally disassemble the after treatment system and clean the DPF, DOC, PREDOC and after treatment injector. All FOUR components need to be serviced, not just the DPF. In fact, the DOC is more important than the DPF in my opinion. Our lease trucks rarely have problems. Once it starts to plug up, the efficiency goes down big time. In your case, I suspect the DOC has simply come to the end of its useful life. Yes, DOCs do wear out. We replace many at about 400k mark, and up. Unlike what the OEM says, they do not last the life of the truck. Maxxforce engines use more EGR than everyone else so more soot gets produced and the aftertreatment on those engines are under more stress compared to other makes. We use Road Warrior after market as well with excellent results and reliability. You should be good to go now!

 

it has been awhile, and I am not sure what I was thinking when I posted being as wrong as I was in the drive. It is solely gear driven. I have only ever had the displeasure of fixing 1 of those, but we did have more then a few blow through. Usually the check engine light would be on for oil pressure codes set because the pan would be just about empty, that happened more then a few times.

 

Belt or gear, it still sucks and is totally and unnecessarily overly complicated!!!

 

I have a 2010. Prostsr maxxforce. With I recently bought. . I. Notice I added. Quite. A few. Gallons of. Coolant. So. That. Quite. For a few. Days on my. Way[ back from. Buying it. The. Fan. Does. Not. Engauge or. Oi dont hear it.
Temperature. Bounce. From. 200. Up. To. 230 i would. Easy of. The. Fuel and. It. Would. Drop. Back. To 220. Then it. Loss alot of coolant. Tru metal reservior over flow. Causing to. Trip. The. Shut. Down

Can i. Add. A. Manual. Switch to it. I notice it has. 5. Lines going. To it
I bought. This to take. Back. To el.salvador and. I. Don't know. What. To. Do I. Am in. A truck. Stop in. Colorado. And once. I. Stop. I. Idle. For. 10 mi. It. Dr oped to. 205 and it. Stayed. There . I also. Notice. The. Ac. Line. Had. Condensation but I had. Ac off and. Running. Heat. Trying to. Di cipate heat . . Please help . Let me know. What's your take on this. Once I get. This back. Home. I. Pitting a. Big cam. 4.on this or. Is ther a. Way. To elimitate. All the. Egr and. Stuff off. Since. Over there. There no emisión. Reg.

 

I am buying a 2014 Prostar with a Maxxforce from my brother. It has 460,000 miles on it. It is in the shop now. The truck lost power, like the computer derated it, so he took it to the shop. The dealer said the truck wouldn't Regen because the DFP filter was sooted over and needed to be cleaned. They cleaned the filter and the truck ran fine for 2 days (local) and derated the power again, wouldn't go over 50 mph loaded. It went back to the dealer and they said that the DPF Filter is sooted over again! They said that they consulted Navistar and was told to replace the Injectors because they are Overfueling which is causing the filter to soot over quicker than the regen can burn it! After reading these posts, I wonder if the problem isn't actually the DOC rather than the Injectors! Thoughts???

 

Can't help you with your DOC question but can tell you that baking the DPF vs a new DPF is a question worth asking.
Some say it is better in the long run to put a new DPF.

 

When this was happening, was the truck asking for a parked regen? Any warning lights on? DPF can be plugged for a variety of reasons. It is terrible service for any shop to simply remove it, clean it, reinstall and send you on your way. Did they ever do a forced regen to see if it actually worked? Do not let them change your injectors. The test for that is really simple, you disconnect the exhaust and snap the throttle. If the exhaust is heavy black and doesn't clear up or takes a long time to clear up, then you might have an over fueling injector. Normally when you snap it will puff a bit of black but then clear up in about 2 seconds.

 

Ok. They opened a Case with Navistar and the changing of injectors came from Navistar. They did a parked Regen but it was accumulating soot too fast they said. They also said that they checked the DOC and the readings weren't inverted and was reading okay.