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Old 06-16-2015, 06:29 PM   #15
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Sure am feeling for you on this one Larry, there's nothing worse than trying to chase down those little electrical gremlins.
Went through that with our warn engine light and saying that our cam position timing was off. The kept replacing sensors when the real problem was a wiring harness that was rubbing.


Hopefully they can find out what your problem is quickly
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Old 10-19-2015, 10:12 AM   #16
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Larry, did you ever get the MIL light problem figured out?
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Old 10-19-2015, 09:15 PM   #17
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No I don't have a clue.
I haven't posted a follow-up because I didn't want to jinx anything.
I have driven 4631 miles since then with no mil or parked regen.

If anything goes wrong now it is your fault ctundra 😉
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Old 10-19-2015, 09:17 PM   #18
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Darn, the smilelys didn't show. On me phone.
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Old 10-24-2015, 08:49 PM   #19
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got the smileys on the message. we made it to Coburg last Monday and they did their usual magic on make all the repairs to my coach. then took it to Brattains IH for service and told them there is something wrong with the SCR (emission system), had to do another parked regen on the way from ARG (monaco service center) to Brattains, about 20 minute drive. they found an exhaust manifold leak at the number 6 cylinder. They believe this was the cause of the excessive regen's but won't know until they put the motorhome back together and run more diagnostic. Replacing the manifold is not an easy job. They have been working on it for the last three days, had to dismantle the closet. Also, taken the moho in for oil change, folks at Coburg ARG last year did the engine oil change, when done I asked about the secondary centrifugal rotary oil filter, they said they did not replace it as it was not scheduled to be replaced (per navistar and owners manual this filter gets changed every oil change, Duh!!!). i did not press the issue with the ARG, although i should had, and figured i would catch it the next oil change (5,000 miles). And i did. Anyway, asked the tech at Brattains about the rotary filter, he had no clue what i was talking about, so showed him where it was located. he replaced it in a few minutes time, but did not know about the second oil filter. anyone out with the MF 10 engine - be sure the oil change service includes the replacement of this second filter. they also have two other MF10 motorhomes in the shop, one has the engine pulled and on the floor ready for a complete tear-down due to lack of coolant (probably operator error). Every impressive seeing how much equipment is removed from the coach when pulling the engine. will post an update as a new post once i learn more.
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Old 10-25-2015, 09:09 AM   #20
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Definitely keep us updated. Must admit the factory is a little pricey on the oil changes. You get a lot more items checked out when at Braittan's.
Would be interesting to hear what caused the problem for the complete engine overhaul.

Hopefully they get you all fixed up. Unfortunately when we go to any shop, we see all of the problems that some have.
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Old 11-23-2015, 12:02 AM   #21
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update.

Brattians replaced the exhaust manifold, the doser injector (7th injector), took the DPF out and cleaned, cleaned DPF DP sensors, updated the ECM and test drove 75+ miles. 9 days in the shop. Got the moho back and drove 250 miles down I-5 the first day and engine ran great - probably better than I can remember. Drove another 250 miles the next day, 10 miles from or next overnight stop the DPF light came on and buzzer (stage three) pulled over and did a parked regen, took two try's to clear the DPF light/buzzer. Drove another 8 miles and the same thing happened - this time the DPF light cleared with one parked regen. three days later was able to get it to IH shop. they had it for another 4 days, they re-updated the ECM, drove it up and down the highway with computer hooked up and saw the engine was doing constant passive and active regens, even though the soot level of the DPF was very low, around 3-5 (16 being full). They had an engineer from Navistar log in to the ECM and reset all sorts of settings. They figured Brattians ECM update attempt screwed things up. Most important was the MAF (mass air flow) setting as this was setup as a 350HP engine. Got back on the road and drove another 225 miles without issue. although did notice the DPF light blink once towards the end of the trip - but did not come on. doing a 400 mile day tomorrow. hope for no engine problems.
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Old 11-23-2015, 10:21 AM   #22
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Definitely keep us updated on how this progresses. That was a lot of work, and unfortunately electronic gremlins are a real pain to get sorted out.
How many miles do you have on that engine.
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Old 11-24-2015, 10:54 AM   #23
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Drove 405 miles yesterday. Moho ran perfect. DPF light flickered once around the 50 mile mark but didn't see it come back on. Went through some mountains and had excellent power going up a couple of long grades. Also another note, my engine brake worked as designed, finally. The guys at Brattains found out why the engine brake kept shutting down. Whenever I use my cruise control this would disable the EB. They figured this out when test driving for the DPF problem. Although learning this they're unable to correct the problem. So for now if I use cruise control I go without my EB. The EB will reset after turning off the engine. What the heck, don't have much use for cruise control anyways.
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Old 11-24-2015, 07:44 PM   #24
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Sounds like they got you up and running properly. That is strange regarding the EB. Keep us updated as time goes on.
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Old 11-24-2015, 10:47 PM   #25
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Forgot to post mileage on the Moho, 22,400 miles.
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Old 11-24-2015, 11:58 PM   #26
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Hope they found and fixed the problem! Nothing like having to chase a problem for 1,000's of miles and months of travel!
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Old 05-16-2016, 07:43 PM   #27
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Are you guys aware that there are many class action lawsuits against Navistar from the trucking industry because of the things you mention. I too am into what I have learned is the inevitable failure of these EGR systems. Our 2012 Monaco Knight has ran well up until the latest flash of ECM. It was said, on these pages, that it would give me more fuel economy and power. Didn't happen. First thing I noticed was struggling to get up grades that were never a problem. Poor acceleration too. The ECM flash was done 10-2-15. I called the shop after getting to our winter destination to complain and was told to bring it back in the spring when we return home to MN. Well we stopped on 5-10-16 thinking this would be quick scan and we'd be on our way. They hooked up the computer and said it indicated a cracked DPF. If so it's a 3-5k fix. Luckily it's still under warranty so cost me nothing this time. The reason I say this is because these things are so delicate you can crack them going over a pothole or railroad track. At any rate it was pulled and found to indeed be cracked. It was replaced, computer hooked and indicated everything was good to go. At 3 blocks away a temp sensor light was flashing so back we go. They hook up the computer and say huh. The tech crawls under where the DPF hangs and says 1 of the temp sensor wasn't connected all the way and he heard it click when he pushed it in. He looked at his computer and said there is nothing wrong you're good to go. Not far down the road the light is back on.
We decided to keep on going. The rig actually has worse power problems than before. While I was able to get it up to the speed limit it took miles to do so. We stopped for fuel after 200 miles or so. I shut it down and upon start up after fueling I now had a severe loss of power. It took 8 miles on fairly flat ground to get upto 60. We decided to get to a CG for the night and when hitting a high hill on the way I went down to 25 mph. We limped it into the CG.
The next morning we left and the darn MH was able to get up to the I-80 speed limit but slowly. At the next fueling after shutting off we again had a tough time getting to 60 mph so we pulled into a wayside shut it down now back up to the speed limit. We made it home and am currently waiting to take it in.
I am shuttering at the things I have uncovered by googling Navistar EGR problems. This system has cost them millions. Not only are there many lawsuits by truckers but also by the EPA for misleading consumers. They've been charged with fraud for misleading customers. Their tactic is to act dumb and hope your warranty runs out so you have to pay for the expensive fix that they do have. Fact is if they take a truck in they'll do the EGR fix give it a 1 year 100,000 mile warranty. But like I said they won't tell you this until your warranty is gone.
I will be contacting one of the class action attorneys to see if I can join. I already know this has devalued our rig which will be reflected in the trade-in value. I was told this at a Camping World. Just so you know Navistar quit making EGR systems totally. They now are SCR like all the rest of the manufacturers.
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Old 05-16-2016, 09:19 PM   #28
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Quote:
Originally Posted by dw624 View Post
Are you guys aware that there are many class action lawsuits against Navistar from the trucking industry because of the things you mention. I too am into what I have learned is the inevitable failure of these EGR systems. Our 2012 Monaco Knight has ran well up until the latest flash of ECM.
I will be contacting one of the class action attorneys to see if I can join. I already know this has devalued our rig which will be reflected in the trade-in value. I was told this at a Camping World. Just so you know Navistar quit making EGR systems totally. They now are SCR like all the rest of the manufacturers.
Sorry to hear of all of your problems since the reflash. But I would definitely think that it hasn't been properly installed.

It does seem that once the update is installed properly that all so far are really happy with it,

Unfortunately all of the newer diesels are prone to electrical gremlins these days. A friend of ours 2012 Charleston with a Cummins has been on a hook times already for shutting down on him. All of the problems we're electrical.
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