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Thread: Auto won't kick down up hill

  1. #1
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    Auto won't kick down up hill

    When going up hills the Auto (2001 GU) does not kick back to 3rd even if the accelerator is fully depressed. Taking my foot off the accelerator and then putting it down again, the auto will select 3rd hitting about 2500 RPM but always then changes to 4th about 2-3 seconds later. I have tried playing with O/D both on and off and also the A/T Hold Power Switch without success. Not sure what I need to check, Auto or ECU or something else?

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    Expert pollenface's Avatar
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    Not sure if it's fluid related but how long since the tranny was serviced?

    Perhaps a blockage in the valve body?
    2008 CRD Auto Wagon
    Factory snorkel, flashlube catchcan pro, 3" manta exhaust, hpd boost controller, dyno-tuned & egr deleted, 2x dual batt systems, 3 batteries, arb bullbar, cheap HIDs, stock lift/tyres, rear helper airbags

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    These transmissions are not very smart and tend to avoid downshifting until most power is lost.
    I have always found it easiest to drive in manual mode when this becomes an issue

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    How do you Drive manual in 3rd?

  6. The Following User Says Thank You to stricky For This Useful Post:

    Avo (7th December 2021)

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    Patrol God Avo's Avatar
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    Quote Originally Posted by stricky View Post
    How do you Drive manual in 3rd?
    Put it in the 3,just below the D

    Sent from my SM-G780G using Tapatalk
    Watch this space, as there maybe a comment added soon

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    Expert pollenface's Avatar
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    or hit the O/D button if it has one
    2008 CRD Auto Wagon
    Factory snorkel, flashlube catchcan pro, 3" manta exhaust, hpd boost controller, dyno-tuned & egr deleted, 2x dual batt systems, 3 batteries, arb bullbar, cheap HIDs, stock lift/tyres, rear helper airbags

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    The auto only has 1st & 2nd manual gear options. I was doing some more investigation, is it possible the Throttle Position Sensor is the problem? I am not sure as the problem mostly occurs up hills.

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    Expert pollenface's Avatar
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    Do you have an O/D button on the stick under ya thumb (under the other big button)?
    2008 CRD Auto Wagon
    Factory snorkel, flashlube catchcan pro, 3" manta exhaust, hpd boost controller, dyno-tuned & egr deleted, 2x dual batt systems, 3 batteries, arb bullbar, cheap HIDs, stock lift/tyres, rear helper airbags

  11. #9
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    Yes, I have an O/D button. But I do not understand what it has to do with my problem.

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    Patrol God Avo's Avatar
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    Take the overdrive off..stick in 2nd or 1st...drive it like ya stole it...

    Sent from my SM-G780G using Tapatalk
    Watch this space, as there maybe a comment added soon

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