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M380 (Unique Issues) If you have a unique issue with your M380 model coach and it can't be answered in one of the other forums here, then this is where you can list it.....list your M380 Parts here too.

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  #11  
Old 04-30-2016
Scott White Scott White is offline
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Don
Thanks for the tip, I will check if that's what they do, they are a cummins dealer.
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Castlewood, Virginia
2001 LXI Millennium
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  #12  
Old 04-30-2016
mpierce mpierce is offline
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Quote:
Originally Posted by DonB View Post
Just wanted to check. If it is the pump, make sure there is a full warranty on it (it will be a rebuilt). Current Cummins list is $3800. So far I've had 5 of them installed in ISLs, two in an SOB and 3 in my M380. That's two occurrences, but needed 2 one time and 3 the other to get a good one. With the three bad ones it took 90 miles for one to go bad, 150 miles for the next, and instantly bad with the third.

The good one in the SOB did 30K miles before I sold it, and the last one in the M380 has about 4000 miles so far, so I know there are good ones out there.
Holy *******, Batman! I understand one going bad, but several in a row? Hoping they just had one bad batch, not that all that are rebuilt are that poor.
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Melvin and Charlene Pierce
Scranton, ND
"Smoke N Mirrors" Royale Conversion
1990 PT40WB
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  #13  
Old 04-30-2016
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Mallie Lennon Mallie Lennon is offline
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I hate to ever bad mouth an engine as there are problems with all. But
don's experience does not increase my desire to own one of these engines.
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  #14  
Old 05-01-2016
hooverg hooverg is offline
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My new/rebuilt pump started to leak shortly after the repair. Turned out to be a plug in the accumulator that had to be replaced. Warranty, but another day in the shop. Maybe the 'quality control' on these rebuilt pumps isn't so swell.
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garry hoover
raleigh, nc
2003 bluebird m380
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  #15  
Old 05-01-2016
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DonB DonB is offline
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Interesting. The failure of my first rebuild was also a plug, although the failure was severe - lots of fuel drenching the back of the coach and the toad - but Cummins chose to replace the pump rather than repair.

In the latest fiasco, the first pump had a tiny crack that didn't show up for quite awhile. I probably shouldn't have said that it failed at 150 miles - the failure was a simple connection problem in the reassembly, and the crack was found when dealing with that. There was general agreement that it might have been hard for the rebuild shop to see that, or it might have happened during installation.

The third failure was electrical/electronic - the pump supplied maximum flow to the engine as soon as it was started, and had to be shut down quickly! The specs say the 2-wires going into the pump should have greater than 100K ohms resistance. The one with the cracked pump had over a million. The one that was bad had 5.6 ohms!

They discussed swapping parts of the assembly around between the two problem pumps, since there were good parts enough to make a full assembly, but decided they would never get the higher-ups to go for it, so went with an entire new rebuild. This time the resistance was tested beforehand. Nobody could figure out how that one passed QC.


The next one
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Don Bradner
Current: No RV at this time
2015 Jeep Grand Cherokee
Prior: 2004 M380 Double Slide
Prior: 1990 WB40 "Blue Thunder"
My location: www.bbirdmaps.com/user2.cfm?user=1
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  #16  
Old 05-06-2016
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Dc2x4drvr Dc2x4drvr is offline
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Hey Scott, any answers yet?
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Lance & Linda Hall
2004 M380
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  #17  
Old 05-06-2016
Scott White Scott White is offline
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Lance

I have been in a meeting out of Town, but my brother called this afternoon and said they found the Pump was leaking into the blocks and put a Cummins rebuilt Pump on and it leaked out the back. They ordered another so it will be Monday. I think the quality controlli is not very good. I will find out Monday What a New One cost, but he said the Shop forman indicated 2 to 3 Times more. I will update on Monday.
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  #18  
Old 05-06-2016
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Dc2x4drvr Dc2x4drvr is offline
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Thanks for the update, I was told by an SOB Cummins owner in Tucson to plan on a fuel pump, amazing that they can't do a quality rebuild on a fairly common pump. The guy said Cummins won't sell a gasket for rebuild, only the complete pump.
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Body #W000234
"Smooth Ride"
Full Timing with 2 cats

Last edited by Dc2x4drvr; 05-07-2016 at 07:51 AM.
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  #19  
Old 05-06-2016
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DonB DonB is offline
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I've been told (more than once, by Cummins-owned dealerships) that new pumps do not exist. The pump is probably not very simple, either, with very high pressures and electronics combined.

The track record in terms of a high percentage of failures is at least consistent!
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Current: No RV at this time
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Prior: 2004 M380 Double Slide
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  #20  
Old 05-07-2016
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Full Timing with 2 cats

Last edited by Dc2x4drvr; 05-07-2016 at 02:31 PM.
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