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Thread: Intake Manifold Temp 220 degrees

  1. Top Of Page | #11
    DANG IT'S COLD! AK Bob's Avatar

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    Intake Manifold Temp 220 degrees

    Quote Originally Posted by Jsol5 View Post
    Yup. These are pretty much what my truck is showing.

    Seems like mine runs about 35 degrees above intake temp on the box.

    I would imagine this is because I'm loaded down 17k pounds all the time since it's a service truck.

    Sent from my SM-N986U using Tapatalk
    Yes, could be.

    My reading were not towing and very lightly loaded.

    I also have a fine mesh bug screen over the intercooler and winter grill cover over radiator.


    2014 RAM 3500 (Aisin) 3.73 4X4 Limited Crew Cab Long Bed DRW. Oil Bypass Filter, Fuel Filtration Kit and 50 Gallon auxiliary fuel tank.

    Sent from my iPad using Tapatalk

    2014 RAM 3500 (Aisin) 3.73 4X4 Limited Crew Cab Long Bed DRW. Oil Bypass Filter, Fuel Filtration Kit and 50 Gallon Aux Fuel Tank.

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  3. Top Of Page | #12
    JMueth2020's Avatar

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    Re: Intake Manifold Temp 220 degrees

    The manifold air intake temperature is 52° hotter than the outlet temperature of the inner cooler.

    I understood if the outside temperature is really cold and the engine bay is pretty warm, the increased budget increase of 52° just in that short distance is interesting.


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  5. Top Of Page | #13
    DANG IT'S COLD! AK Bob's Avatar

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    Re: Intake Manifold Temp 220 degrees

    Quote Originally Posted by JMueth2020 View Post
    The manifold air intake temperature is 52° hotter than the outlet temperature of the inner cooler.

    I understood if the outside temperature is really cold and the engine bay is pretty warm, the increased budget increase of 52° just in that short distance is interesting.
    I understand your concern, and it does seem like a lot.

    As you can see from post #9, the Intake manifold did get heat soaked to almost 200*F.

    Please post your results for comparison when you have time.

    2014 RAM 3500 (Aisin) 3.73 4X4 Limited Crew Cab Long Bed DRW. Oil Bypass Filter, Fuel Filtration Kit and 50 Gallon Aux Fuel Tank.

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  7. Top Of Page | #14
    JMueth2020's Avatar

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    Re: Intake Manifold Temp 220 degrees

    Before the delete, Banks monster idash read the manifold air temperature about 20-30 warmer than ambient temperature.

    Today was 75- 82outside, and the intake air manifold temperature read 118-127.

    The only two things without in detail that could be going on are the sensor's location, which doesn't make sense in some respects.

    When the ambient temperature was 50-the 60s, the manifold temperature was 70s at interstate speeds.

    Different topic: what's up with all the DPF and EGR parameters?

    Why not have some manifold density and other useable parameters as standard since tuning mostly means not having those worthless items?


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  9. Top Of Page | #15
    JMueth2020's Avatar

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    Re: Intake Manifold Temp 220 degrees

    I unhooked the MM3 and hooked up the idash to see what MAT I get with it to compare to the MM3.

    There are many other parameters I'll compare.


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  11. Top Of Page | #16
    JMueth2020's Avatar

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    Re: Intake Manifold Temp 220 degrees

    At 55mph, 88 ambient temperature, 60% humidity.

    Lower temps than the MM3.

    The manifold temp is less than 10 degrees warmer than the ambient.

    Something fishy is going on, having two readings significantly different.

    Attached Images Attached Images

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  13. Top Of Page | #17
    JMueth2020's Avatar

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    Re: Intake Manifold Temp 220 degrees

    Last night on my way home from work.

    82 ambient temperature.

    Manifold intake temp 90.

    Attached Images Attached Images

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  15. Top Of Page | #18
    DANG IT'S COLD! AK Bob's Avatar

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    Re: Intake Manifold Temp 220 degrees

    I agree something is off with the MM3 Intake Manifold temperature reading.

    My first concern was; are the MAT and the IAM-T PID's the same sensor?

    To prove the IAM-T PID, I monitored with the MM3 and performed this test.

    Cold-soaked engine's ambient air temperature was 43*F, and the IAM-T read 79*F.

    Next, I disconnected the Intake Air Manifold temperature sensor, and the MM3 read -40*F, but then, while still disconnected, it mysteriously started increasing in temperature.

    I then performed the same test with my Autel scan tool, the "Intake Manifold Temperature" PID read 45*F.

    With the Intake Air Manifold temperature sensor disconnected, it also went to -40*F then started increasing.

    So, in conclusion, I do know that the IAM-T PID on the MM3 is the Intake Manifold Temperature and reads 34*F higher than the Autel.

    Not sure why they both showed the same increase in temperature after the sensor was unplugged.

    2014 RAM 3500 (Aisin) 3.73 4X4 Limited Crew Cab Long Bed DRW. Oil Bypass Filter, Fuel Filtration Kit and 50 Gallon Aux Fuel Tank.

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