X-15 Cummins thread

Discussion in 'Peterbilt Forum' started by KB3MMX, Feb 26, 2018.

  1. OOCorp

    OOCorp Bobtail Member

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    Oct 14, 2020
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    Have had both the X15 Performance (2019 Pete 579 w/ 565hp/2050tq) and the X15 Efficiency (2020 KW T680 w/ 500hp/1850tq). The Pete ran without a hitch. Put about 120k on it before switching. The KW has over 200k miles and just dropped all four valves in one of the cylinders. Complete rebuild. Will have to fight Cummins on the warranty as they denied the claim. Pete was a company truck. KW was a lease. Cummins claims driver error. Both were Eaton autos.
     
    Last edited: Oct 14, 2020
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  2. spsauerland

    spsauerland Road Train Member

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    Cost of warranty! I think 605 is $5000 more. What is your application?
     
  3. Dave_in_AZ

    Dave_in_AZ Road Train Member

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    What was the supposed error???

    I love all the stories lately of how a major component failure requiring a rebuild is somehow denied.

    Cummins and Detroit.

    All are proud of there engines as long as you don't have a problem, especially a big one.
     
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  4. OOCorp

    OOCorp Bobtail Member

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    Cummins claims over 100 instances of neutral being engaged while going downhill, over-revving (ecm read 2348 as max registered RPM. Truck was governed at 2k and 75mph), and over-speed (max read was over 100mph).
    My theory is that all of those things were done before I got into the truck as I’ve never noticed an over-rev and certainly haven’t engaged neutral down any hills. I also have not gone anywhere near 100mph in it.

    I asked for timestamps on the listed instances and haven’t received a reply. I had to query the shop where the ecm was uploaded to get even that.

    I would also agree with you. I’ve heard of at least four separate cases of valve drops with the same engine within the last couple years from other drivers. Repair will cost $25,000.
     
  5. spsauerland

    spsauerland Road Train Member

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    2350 RPM ain't going to drop a valve. I call B.S.
     
    Last edited: Oct 15, 2020
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  6. Dave_in_AZ

    Dave_in_AZ Road Train Member

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    And on a side note for our younger viewers that think a new truck is the end of all your troubles...........

    Does the payment and insurance stop while something like this is being hashed out???

    No. It does not.
     
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  7. OOCorp

    OOCorp Bobtail Member

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    Very true. If I don’t win the fight, I’ll be responsible for the repair, and the downtime including the truck payments, insurance, and cost of the loaner truck I’ve been in since the breakdown. Not to mention the couple grand for the tow to the shop as well.

    I got ahead of it to stop the bleeding and will be closing on a used truck next week.
     
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  8. Dave_in_AZ

    Dave_in_AZ Road Train Member

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    I'd be amazed if you got the tow money back.
     
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