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Thread: Transmission temp gauge

  1. 7th March 2011, 10:23 AM #1
    Discomark
    Discomark is offline Master Supporter
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    Transmission temp gauge

    Hi Folks,
    After a rather expensive transmission rebuild I thought i'd investigate fitting a temp gauge to keep an eye on transmission fluid temp. I have seen a post regarding fitting a VDO gauge but unsure where to place the sender and if a suitable sender unit could replace the sump plug as that would seem the logical place to monitor the fluid temps. Anyone had any success with fitting a gauge to a D1 auto?
    Cheers
    Mark
    97 Disco TDI
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  2. 7th March 2011, 11:36 AM #2
    blitz
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    No idea but interested to know what you find as I want to do same
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  3. 7th March 2011, 01:27 PM #3
    theborderdog Guest
    I'm just about to do the same thing, my mind was set on an engine watchdog TM2 for my TDI auto as I've just rigged 1 up in the cab for the engine temp.
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  4. 7th March 2011, 03:09 PM #4
    Tombie Guest
    My Madman EMS has a sensor in the ATF plug
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  5. 7th March 2011, 07:13 PM #5
    Discomark
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    Quote Originally Posted by Tombie View Post
    My Madman EMS has a sensor in the ATF plug
    Hi Tombie,
    I had a look at the Madman EMS site but could not find a sender for the ATF plug, can you advise where you got yours?
    Cheers
    Mark
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  6. 7th March 2011, 08:10 PM #6
    upnorth
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    Quote Originally Posted by Discomark View Post
    Hi Folks,
    After a rather expensive transmission rebuild I thought i'd investigate fitting a temp gauge to keep an eye on transmission fluid temp. I have seen a post regarding fitting a VDO gauge but unsure where to place the sender and if a suitable sender unit could replace the sump plug as that would seem the logical place to monitor the fluid temps. Anyone had any success with fitting a gauge to a D1 auto?
    Cheers
    Mark
    97 Disco TDI
    I had one from AEM Electronics - Wideband O2 UEGO, Water/Methanol, Stand Alone Engine Management, Piggyback F/IC, Tru Boost Controller, Gauges, Automotive Performance Electronics in my old car and never missed a beat.

    That combined with a good transmission cooler made it great for towing and kept the temperature down below the upper operating temps.
    When you start seeing it at upper temps even though it is within operating temperature you have your eyes glued to the guage and not to the road.
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  7. 8th March 2011, 07:30 AM #7
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    clubagreenie
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    What is the "normal operating range" of the auto's? looked at the AEM gauges and they run up to 300c, I thought that auto's ran hotter than that.
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  8. 8th March 2011, 11:17 AM #8
    upnorth
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    Quote Originally Posted by clubagreenie View Post
    What is the "normal operating range" of the auto's? looked at the AEM gauges and they run up to 300c, I thought that auto's ran hotter than that.
    Generally it should run around 175f - 200f, that would be average operating temp.
    Anything upto about 275f in short bursts (towing up hills etc...) but anything over that is cause for concern.
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  9. 8th March 2011, 03:59 PM #9
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    clubagreenie
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    Not wanting to question since I asked but 212f is 100c and that seems very low.
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  10. 8th March 2011, 05:08 PM #10
    Discomark
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    The Ashcrofts UK website states;

    175-200° F= Normal pan oil temperature operating range.

    275° F= Maximum allowable oil pan temperature for short durations during long hill climbs.

    ATF lifespan drops significantly though when running at higher temps.
    Transmission Oil
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