Fluid temperature specs

Discussion in '3rd Gen - 2007 - 2017' started by bobmbx, Apr 20, 2019.

  1. bobmbx

    bobmbx Full Access Members

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    I'm setting up dashboards on OBDLink (MX+), and need some help with fluid temp specs to set up "ranges" on my display gages.

    Can someone direct me to the specs for the tranny, coolant, and oil temps? (cold, normal, caution, hot, etc)

    Also, which PID does the Expy use to set the the "Oil Temp" indication in the left MFD. I know there isn't an oil temp sensor, but its coming from somewhere.
     
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  2. JimmyM

    JimmyM Full Access Members

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    I use Torque Pro and a cheapie ELM327 Bluetooth adapter. I have a 2011 with the 5.4L.
    For ranges I use 100-250 for all temperatures. I have an actual reading for Oil temperature from a custom module I built.

    But I don't have ranges for temperatures.
    But 185-205F is normal range I see for Coolant. So maybe 210 - 235 for the yellow range, above would be red.
    Transmission rarely sees over 210F when towing slowly up hill , So maybe 210-235 for yellow, above would be red.
    I am just recently able to read actual oil temperature. But It climbs slowly and only ever hit 200F briefly while towing up hill in about 50F ambient. I've read, however, that the EB3.5 is harder, thermally, on the oil than the 5.4L
     
  3. mjp2

    mjp2 Full Access Members

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    <threadjack>

    Do you happen to have a write-up or reference for that oil temp setup? Any chance you're also pulling actual oil pressure readings too?

    </threadjack>
     
  4. chuck s

    chuck s Full Access Members

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    [​IMG]

    -- Chuck
     
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  5. JimmyM

    JimmyM Full Access Members

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    Here's the link to my project. Yes, Oil temp and pressure between the oil filter and engine where the oil enters the filter.
    https://www.expeditionforum.com/threads/auxiliary-can-bus-module.38436/
     
    Last edited: May 15, 2019 at 11:28 AM
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  6. JimmyM

    JimmyM Full Access Members

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    That chart is a bit misleading. My transmission has 128k on it and it runs routinely at 195F. The internal thermal bypass doesn't even open until 175F.
    Older transmissions were less temperature tolerant than new ones.
     
  7. coolzzy

    coolzzy Full Access Members

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    That temp chart needs to go away, modern synthetic transmission fluid is designed to run at 200-205 at normal operating temperature. All Ford 6 speed transmissions will operate at or around 200 at all times, even pulling a trailer. Mine sits at 203-205 towing my travel trailer down the highway in 95+ degree heat at 70mph. I've seen it briefly as high as 210 climbing steep mountain roads with the trailer in tow at 45mph in the heat of summer and the cool spring weather as well. Keep in mind these transmissions are thermostatically controlled, and DO NOT let fluid into the cooler until around 195 degrees.
     
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  8. chuck s

    chuck s Full Access Members

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    Would love to have a current temperature chart. Got one?

    -- Chuck
     
  9. JimmyM

    JimmyM Full Access Members

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    I'd love one too, but good luck getting a manufacturer to publish anything that's actually meaningful.
    That chart has been around for 30+ years. I remember seeing it when I was a kid at NAPA with my dad.
     
  10. chuck s

    chuck s Full Access Members

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    I'm thinking the chart really refers to the life of the transmission fluid afterwhich it may not protect the system.

    -- Chuck
     

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