transmission fluid temp





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  1. #1
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    Default transmission fluid temp

    Can any body give me an indication of where the temp should be during driving and also during towing.
    Or at least what readings you are getting

  2. #2
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    Default

    Hi tjola

    Times I have checked open road 80-90 not towing. Off road crawling up to 92.

    Some more info here. http://www.4wdaction.com.au/forum/vi...f=120&t=146449
    Real engines use spark plugs

    2012 Trailblazer 3.6 V6
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    Philip

  3. #3
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    Default

    Quote Originally Posted by tjola View Post
    Can any body give me an indication of where the temp should be during driving and also during towing.
    Or at least what readings you are getting
    auto trannie
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    It was a scorcher in KZN yesterday (40 degrees), driving to Ixopo through the Umkomaas valley it went op to 99!!!! Quite steep with a lot of turns so plenty gear changes.
    2013 Trailblazer 2.8 LTZ 4x4
    2015 Isuzu KB300

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  5. #5
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    Default

    I towed my offroad trailer yesterday up a steep uphill and the transmission temp went up to 100. So I suppose that is normal.
    Any feedback from 2.8 owners as to where the engine temp guage is when towing up mountain passes.
    under normal driving my needle lies below the centre mark but towing up the steep hill it went up to halfway and for a second or two about the needle thickness over centre mark.

  6. #6
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    Hi, Checked today for the "first time", driving between Potch and Parys, nice road with some traffic, temperature stayed constant at about 73 degrees, just before Parys there is a small section which I love to "explore" and also selected Manual to see if I can beat my "record" with the platkar through the bends...hehe. Got within 10km/hrs of the 325i Beemer's best. Temp of the gearbox on the TB 2.8 showed 80 degrees at the top of the run. What is quite surprising to me was that about 2 km's after that the temp climbed to 83 degrees, on the downhill portion. No towing, standard tyres. Somewhere I read that your transmission fluid temp should not exceed 100 degrees C for a prolonged period of time??

  7. #7
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    Default

    Looking on the diagram on post 3 the comments are much like an "alert for no reasons".

    If we look at the temp chart it only starts at 175 deg (not sure of C or F ??).
    If "C" then no reason for alert if "F" then we are still talking around 80 C, so the alert line would be much higher.
    I take the 225 F as a reference which would result in 107 C, looks about right but critical only after about 35K kms (average!) ...

    ... or am I missing something here?
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  9. #9
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    Default Re: Chevrolet Trailblazer 2.8 LTZ Automati Transmission Overheating when towing

    I have a
    2012 Chevrolet Trailblazer 2.8 LTZ 4x4
    • 170,000kms
    • 6 Speed Automatic Gearbox
    • Automatic transmission fluid changed by Isuzu agent at 150,000kms
    • Factory fitted rims
    • FSH from Isuzu
    • No extra modifications; no nudge bar; no bull bar; no spotlights

    I have owned the car for 3 years. When driving in the city the transmission fluid temperature peaks at 83 degrees C during hot summer days. The temperature readings flactuate very fast from 83 degrees C to 80 C in a few seconds vice-versa.

    I towed my Sprite Splash caravan from Johannesburg to Hartbeespoort dam and was shifting gears manually.l never used the 6th gear when towing. The transmission fluid temperature rose to 96 degrees C with a few seconds of ascending the many inclines on the route. At one point on my return trip , l parked the rig for more than 2 hours so that the transmission temperature could cool down. I attributed the rise in transmission fluid temperatures to the inclines, but l got shocked when l towed the caravan in the city - the transmission fluid temperature rose to 99 degrees C. The temperature would rise from 94 degrees C to 99 C in a few seconds. When l tow the caravan on an open freeway that does have inclines at 80km/hr+ , the transmission fluid temperature does not exceed 94 C.

    I asked one agent about the "overheating" TB transmission when towing. The response was "don't worry, as long as the temperature doesnt get to 102 degrees C". Then l approached a different agent who said that "the temperature monitoring system on those Trailblazers is too sensitive dont worry". When l asked about the safe maximum temperature, the agent was not even sure of what he was saying. When l asked if the TB has a transmission fluid cooler and it's location, l didnt get a clear answer.

    Kindly help with this information
    • Has anyone in this forum had a similar experience
    • It is clear that the gearbox is heating up when l am towing.Is there any gearbox specialist that you can recommend, preferably one who is located in the Randburg; Strydom park areas?
    • Does my 2012 TB have a transmission fluid cooling mechanism?
    • Who can fit an after market transmission cooler on my TB?

    I would really appreciate your views; advice and information regarding this matter because it worries me so much.l just have to have this sorted before my next holiday.
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  10. #10
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    Default Re: transmission fluid temp

    Strange - was just reading today in June 2019 issue of CAR - page 102 - 103 - an article by ZF on the replacement of ATF. Dont know what type of transmission is in your vehicle - even if not ZF - it may help to shoot them an email?

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  12. #11
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    Default Re: transmission fluid temp

    Hi clemm,
    Those temps should be fine. There is protection built into the electronics and it kicks in at around 130C - this according to my local service manager. The tranny oil temp light will come on and the engine power will be reduced.
    There is a transmission oil cooler, but it is actually a heat exchanger with radiator coolant at the bottom of the radiator.
    Do you have a digital readout of your engine coolant temperature? My model has that. I find the tranny oil heats up parallel to engine coolant, but is slow to come down after a steep climb. I have seen numbers north of 90C for both coolant and tranny oil on a +40C day in the Kalahari, with my Echo Chobe in tow, up long hills.
    Last edited by RoelfleRoux; 2020/03/11 at 03:15 PM.

  13. #12
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    Default Re: transmission fluid temp

    Quote Originally Posted by RoelfleRoux View Post
    Hi clemm,
    Those temps should be fine. There is protection built into the electronics and it kicks in at around 130C - this according to my local service manager. The tranny oil temp light will come on and the engine power will be reduced.
    There is a transmission oil cooler, but it is actually a heat exchanger with radiator coolant at the bottom of the radiator.
    Do you have a digital readout of your engine coolant temperature? My model has that. I find the tranny oil heats up parallel to engine coolant, but is slow to come down after a steep climb. I have seen numbers north of 90C for both coolant and tranny oil on a +40C day in the Kalahari, with my Echo Chobe in tow, up long hills.

    Thanks a lot RoelfleRoux,

    There is a digital display for the tansmission fluid temperature, which can be accessed via the MENU button. As for the engine coolant temperature display, it doesnt have any display for it except the usual heat guage.

    If the tranny oil temperature can reach 130C it means l have nothing to worry about because the worst that has ever happened was 99 C on a very hot day.
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  14. #13
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    Default Re: transmission fluid temp

    I went out to my car now and this is what I found

  15. #14
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    Default Re: transmission fluid temp

    Hi Clemm

    I also do quite a bit of towing with my 2.8 auto 4x4. I tow a Jurgens Palma and although the transmission temp do go up quite a bit when towing, I never had issues before where it was going up beyond the critical point. The highest Ive seen mine was 98 going up the steep, twisty Magoebaskloof with the Palma in tow, manual mode 2nd and 3rd. We do a yearly (5,000km) trip from Cpt to Kruger and never experienced any issues before.
    2014 Chevrolet Trailblazer 2.8 Auto 4x4
    2015 Jurgens XT140 Ext... maar ek soek 'n Bush Lapa
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  16. #15
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    Default Re: transmission fluid temp

    toe ek die boot gesleep het van richardsbaai het ek niks fout opgemerk nie.
    sleep die boot gewoonlik dam toe en die temp bly onder 100 grade.

    sal nou weer n bietjie dop hou.... as ek die boot afsleep natal toe einde van die maand.
    sal sien wat daai paste doen, dis wel aftraande, maar na pietermaritzburg is daar n lang bult .

    en hy roer gewoonlik.

  17. #16
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    Default Re: transmission fluid temp

    https://www.4x4community.co.za/forum...s-and-problems

    This topic has been discussed in the link above, check it out. 100 deg does not seem too high at all!

  18. #17
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    Default Re: transmission fluid temp

    Quote Originally Posted by Festi1 View Post
    https://www.4x4community.co.za/forum...s-and-problems

    This topic has been discussed in the link above, check it out. 100 deg does not seem too high at all!
    Thanks a lot.l'm so relieved

  19. #18
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    Default Re: transmission fluid temp

    To add some more info:
    This weekend I took my Echo Chobe up the mountain again. The road to where the low range section starts is also quite steep and slow with speed bumps thrown in to boot. I did the first section in normal 2wd and the box in auto mode. So basically just driving and allowing the car to make all the gearing decisions on my behalf. Ambient temp was 32C and when I stopped to select low range, the tranny temp was 96C and engine coolant 80C. For the low range section I selected manual shift and kept the revs in the 2000rpm range with mostly 1st or 2nd gear selected. The climb is very steep and unrelenting, but by the time I got to the top, the tranny temp was down to 82C from 96C.
    Last edited by RoelfleRoux; 2020/03/22 at 12:35 PM.

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