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379 Pete 3406e problems

Discussion in 'Peterbilt Forum' started by DuesyJ29, Jan 31, 2017.

  1. Jan 31, 2017 #1
    DuesyJ29

    DuesyJ29 Light Load Member

    78
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    Jul 19, 2013
    Dallas, Texas
    0
    I have a 1995 Pete 379 with the 3406e in it and I've been experiencing an issue. I have a 15 over trans in and when running through the top gears, at about 1800 to 2000 revs I get a stop engine and check engine light. As soon as I up shift or drop into neutral the problem magically goes away. I thought it might be overheating so I checked the water level and that was fine. I'm wondering if it could be the trans overheating or maybe something happening when the turbo spools up? Any ideas?

    Thanks

    MS
     
    DuesyJ29, Jan 31, 2017
    DuesyJ29, Jan 31, 2017
    #1
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  3. Jan 31, 2017 #2
    Roberts450

    Roberts450 Road Train Member

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    Why are you running so high in the RPM's?? Im guessing it might be telling you its time to upshift. Its not a honda ya know.
     
    Roberts450, Jan 31, 2017
    Roberts450, Jan 31, 2017
    #2
    Caterpillar Cowboy, Broke Down 69, KB3MMX and 2 others Thank this.
  4. Feb 1, 2017 #3
    pigeon river trucking

    pigeon river trucking Light Load Member

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    michigan
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    Sounds like engine over speed
     
    pigeon river trucking, Feb 1, 2017
    pigeon river trucking, Feb 1, 2017
    #3
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  5. Feb 2, 2017 #4
    bigguns

    bigguns Road Train Member

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    Pull the codes and you will know.
     
    bigguns, Feb 2, 2017
    bigguns, Feb 2, 2017
    #4
  7. Mar 12, 2017 #5
    Driveone

    Driveone Light Load Member

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    Oct 26, 2011
    South Carolina
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    That's way to high engine speed for a cat good luck.
     
    Driveone, Mar 12, 2017
    Driveone, Mar 12, 2017
    #5
    Caterpillar Cowboy and KB3MMX Thank this.
  8. Feb 15, 2018 #6
    Loaderlou

    Loaderlou Medium Load Member

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    Feb 24, 2014
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    I agree. 1800 should be more than enough. I run 120,000 lbs. everyday and I have no probs at that rpm.
     
    Loaderlou, Feb 15, 2018
    Loaderlou, Feb 15, 2018
    #6
    KB3MMX Thanks this.
  9. Feb 26, 2018 #7
    KB3MMX

    KB3MMX Road Train Member

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    Man that's screaming that poor kitty !!
     
    KB3MMX, Feb 26, 2018
    KB3MMX, Feb 26, 2018
    #7
  10. Feb 26, 2018 #8
    Oxbow

    Oxbow Road Train Member

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    In his defense, with a 15 over and a 600 RPM split sometimes you gotta run it just a little bit higher than the engine likes in order to get to the next gear.
    If it is running up to that RPM under power and not going downhill then I doubt it would be over speed.
     
    Oxbow, Feb 26, 2018
    Oxbow, Feb 26, 2018
    #8
  11. Feb 26, 2018 #9
    Caterpillar Cowboy

    Caterpillar Cowboy Heavy Load Member

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    Never knew that the check engine light doubled as a shift light!
     
    Caterpillar Cowboy, Feb 26, 2018
    Caterpillar Cowboy, Feb 26, 2018
    #9
    Oxbow Thanks this.
  12. Feb 26, 2018 #10
    Superhauler

    Superhauler TEACHER OF MEN

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    Need more info, overheating. Dont you have a coolant temp gauge? Of all the cats I have owned I never went above 1800 rpm. With the truck engine off turn the key on but don't start it. With cruise switch off hold resume switch up for a few seconds then let go of it. Watch the check light and count the flashes. Example- 5 flashes then a pause then 5 more flashes means no active codes.
     
    Superhauler, Feb 26, 2018
    Superhauler, Feb 26, 2018
    #10
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