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  • D4D Engine Temp Flucuations When Towing

    Hi all,

    Just wondering what sort of temperature flucuations you are getting when towing (probably applies more to those with a Scanguage)

    I have a 150 D4D auto with a Steinbauer fitted and am seeing the engine temp rise from around 86-88 degrees, up to 95 on big hills when towing my CT.

    The oem gauge doesn't move from halfway so it probably doesn't register such a small increase, but I just want an idea if this is what is expected be to normal.

    I don't have an EGT gauge fitted, the company I bought the chip from didn't deem it neccessary as I don't have a larger exhaust or other mods fitted, apart from a straight through muffler.

    Dobbo
    2014 Black GXL D4D Auto with a few add ons.

  • #2
    Mine usually runs in the 88-90 degree mark most of the time, low 90's when towing up hills is not uncommon at all. Highest I have seen was 96 towing up the Bloomfield Track on a 38 degree day and the factory gauge was still dead on half like it always does. Funnily enough though heading across Madigan's line (no trailer) but in 1st or 2nd gear low range and 47 degree ambient I was seeing temps around 85-86 degrees, so less than normal! Go figure.

    I would be interested to hear from people with Manual gear boxes to see if they see similar. I tend to think that's its the Auto heating up that causes the spike in temps, obviously your burning more fuel which doesn't help either but I suspect a manual would fare better, that only a theory though.

    I really should fit a trans cooler to find out shouldn't I So many mods so little cash.

    Cheers Andrew
    [COLOR="#FF0000"]So Long and Thanks for all the Fish![/COLOR]

    [url=http://www.4wdadventurers.com/showthread.php?3840-AJ-s-120-Prado]MY PRADO AND DIY CAMPER TRAILER[/url]

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    • #3
      Mine runs about 83-86 around town, 88-92 whilst towing camper trailer and have seen 95 whilst towing uphill. Manual 120 d4d.

      Cheers Batto
      [url=http://www.pradopoint.com/showthread.php?26874-Batto-s-120-Build]2007 D4D GX[/url]
      [url=http://www.myswag.org/index.php?topic=25018.msg386484#msg386484]2012 Challenge Outback Deluxe[/url]

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      • #4
        I have a trans cooler fitted as well but that didn't have any effect on engine temps.

        Batto, I'll be in Alice in a couple of weeks time, on our way to the Kimberleys. Towing a Challenge Outback Deluxe as well

        cheers,
        2014 Black GXL D4D Auto with a few add ons.

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        • #5
          Mine runs at between 85 and 93 deg C around town, when towing the ct or on a long hill I can see up 105 deg on my Madman gauge, although mine is a 1KZ (manual) they do have the same radiator essentially and similar coolant capacity. There would be some variation in thermostat operation between identical vehicles and also the viscous fan would not necessarily cut in at exactly the same temps either. Also my temp sender for the madman is located in the outlet on the head and that may alter the reading between mine and a scan gauge equipped engine.
          Silver '04 KZJ120~Manual~GXL~Dobinson/Kings lift~Custom valved Ironmans~Detroit Locker~Endless Air~X9 Superwinch~Madman EMS1~TJM Dual Battery~Rhino Roof Tray~120W solar panel~Foxwing awning~Bushskinz UVP~Long Ranger water tank~Bushman fridge~Steinbauer P-Box~Beaudesert 2 3/4"~Airtec Snorkel~TJM Sliders~Prico Boost Gauge~BFG-KO2s~TPMS~GME TX3420~Front and Rear Cameras~Ultimate Camper hanging off the back!

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          • #6
            Originally posted by Dobbo View Post
            I have a trans cooler fitted as well but that didn't have any effect on engine temps.
            That's good to know, another theory bites the dust though.

            Cheers Andrew
            [COLOR="#FF0000"]So Long and Thanks for all the Fish![/COLOR]

            [url=http://www.4wdadventurers.com/showthread.php?3840-AJ-s-120-Prado]MY PRADO AND DIY CAMPER TRAILER[/url]

            [url=http://www.4wdadventurers.com/showthread.php?3975-AJ-s-79-series-Cruiser-Ute]MY HZJ79 Landcrusier[/url]


            [SIGPIC][/SIGPIC]

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            • #7
              Same for me, 84-86 is normal, a reasonable climb with the van, will go to 89-90 and a big climb might see 92. Fitting th trans cooler, has had no impact on engine coolant temp. However trans fluid temps are up to 20 deg lower.

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              • #8
                I have a 4.0L 5 speed auto with factory trans cooler and my scanguage will show mid 90's when towing up hill and mid to high 80's on the flat towing and around town not towing

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                • #9
                  Originally posted by Dobbo View Post
                  I have a trans cooler fitted as well but that didn't have any effect on engine temps.

                  cheers,
                  That matches my experience. The cooler helps keep AT temps down but does nothing for engine temps.

                  I used to see 85 - 95 Deg towing. The worst I ever saw was 107 Deg - that was towing the Tvan up Billy Goats Bluff in the Vic High Country on a 40+ degree day.
                  EX-Prado Owner

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