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C15 accert coolant diverter valve problem

Discussion in 'Trucks [ Eighteen Wheelers ]' started by E model Cat man, Jul 5, 2016.

Page 2 of 2
  1. Jul 9, 2016 #11
    Oscar the KW

    Oscar the KW Going Tarpless

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    Have you checked the air to air and hump hoses, also check the bellows between turbos and cooler, if they crack (which they are known for) fuel mileage will suffer.
     
    Oscar the KW, Jul 9, 2016
    Oscar the KW, Jul 9, 2016
    #11
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  3. Jul 9, 2016 #12
    Oscar the KW

    Oscar the KW Going Tarpless

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    May 19, 2011
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    You're also winding it up to high before shifting, it'll do nothing but eat fuel over 1600.
     
    Oscar the KW, Jul 9, 2016
    Oscar the KW, Jul 9, 2016
    #12
  4. Jul 9, 2016 #13
    tony97905

    tony97905 Road Train Member

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    Feb 28, 2015
    Land of Ahhhhhs
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    If it's making 55psi of boost and suffering from poor fuel mileage verify the exhaust isn't plugged. Also you need to monitor readings on CAT ET to make sure readings are within spec. In order to achieve boost you need fuel so it makes sense both of these symptoms happened simultaneously.
     
    tony97905, Jul 9, 2016
    tony97905, Jul 9, 2016
    #13
  6. Dec 29, 2017 #15
    TeeJayW900

    TeeJayW900 Bobtail Member

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    Dec 29, 2017
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    What wound up being your problem? Did u ever figure it out ? My 2005 c15 Avery is a acting the same way
     
    TeeJayW900, Dec 29, 2017
    TeeJayW900, Dec 29, 2017
    #15
  8. Jan 4, 2018 #15
    E model Cat man

    E model Cat man Light Load Member

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    Jun 10, 2014
    Northern Maine
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    It was a combonation of a high fuel temps around 185-190° from low fuel capacity at only 125gals full after wet system/split tank install, a really ####ty tec that had the overhead all over the place and had deleted the injection calibration codes from the ecm, etc...had overhead and ecm straitened out and added a fan cooled fuel cooler in the return line. Dropped fuel temps 50°+- and helped big time.
     
    E model Cat man, Jan 4, 2018
    E model Cat man, Jan 4, 2018
    #15
    Oxbow and SAR Thank this.
  9. Aug 14, 2022 #17
    Jtrejo

    Jtrejo Bobtail Member

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    0
    Aug 14, 2022
    0
    My mxs is running hot on water and oil temperature side popped some coolent hoses when replacing them found precooler was paying coolent not much but had some dried up changed out solenoid to devrtervalve and noticed it stays hot you can't touch it
     
    Jtrejo, Aug 14, 2022
    Jtrejo, Aug 14, 2022
    #17
  10. Aug 14, 2022 #17
    stuckinthemud

    stuckinthemud Medium Load Member

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    Thread is probably old and stale , last post was close to 4 years ago. You might ping one of posters who responded to the first post
     
    stuckinthemud, Aug 14, 2022
    stuckinthemud, Aug 14, 2022
    #17
    Oxbow Thanks this.
  11. Jun 25, 2023 #18
    W903B

    W903B Light Load Member

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    Jun 5, 2016
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    Did you found why it's burning hot?
     
    W903B, Jun 25, 2023
    W903B, Jun 25, 2023
    #18
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