Results 1 to 5 of 5

Thread: 4Hp22?

  1. 31st August 2015, 10:32 AM #1
    Pedro_The_Swift's Avatar
    Pedro_The_Swift
    Pedro_The_Swift is offline The MOD Father
    Join Date
    May 2003
    Location
    On The Road
    Posts
    30,037
    Total Downloaded
    0

    4Hp22?

    its supposed to learn, right?

    so what exactly does it learn?
    shift points?

    clutch pack pressure????

    WE have just been away with the van again, first time since the latest drama, before the trip the gearbox was a bit, funny. Hard shifts and a reluctance to kickdown from OD.
    With the van on its a whole new gearbox, smooth as silk.

    I am wondering if the previous 7 months of towing every day "taught" the box?
    "How long since you've visited The Good Oil?"

    '93 V8 Rossi
    '97 to '07. sold.
    '01 V8 D2
    '06 to 10. written off.
    '03 4.6 V8 HSE D2a with Tornado ECM
    '10 to '21
    '16.5 RRS SDV8
    '21 to Infinity and Beyond!

    1988 Isuzu Bus. V10 15L NA Diesel
    Home is where you park it..

    [IMG][/IMG]
    Reply With Quote Reply With Quote
  2. 31st August 2015, 08:14 PM #2
    Nanna Truck's Avatar
    Nanna Truck
    Nanna Truck is offline Fossicker Silver Subscriber
    Join Date
    Aug 2010
    Location
    Adelaide
    Posts
    67
    Total Downloaded
    0
    Our 2002 Auto TD5 on a run, after towing the van, acts like the van is still behind and is reluctant to change up into 4th until about 90kmh. A couple of stop/starts and its back to normal. I sometimes check the lever is in D, not 3rd. Hook the van up again and it wants to go to 4th early for the first 10 to 15ks.
    Sure I read somewhere in the handbook that the computer has a memory of the previous driving experience !!!!!!.






    Regards
    Harry
    Reply With Quote Reply With Quote
  3. 31st August 2015, 08:58 PM #3
    Disco_Fever's Avatar
    Disco_Fever
    Disco_Fever is offline Master
    Join Date
    Jun 2014
    Location
    Melbourne
    Posts
    123
    Total Downloaded
    0
    I have to wonder if they learn anything. Mine shifts gear at the same speeds regardless of whether I am sucking up to it or taking it out behind the woodshed.

    Sent from my SM-G900I using AULRO mobile app
    Reply With Quote Reply With Quote
  4. 31st August 2015, 09:40 PM #4
    Fluids's Avatar
    Fluids
    Fluids is offline YarnMaster Subscriber
    Join Date
    Mar 2009
    Location
    Port Stephens N.S.W
    Posts
    3,161
    Total Downloaded
    0
    I noticed today that the box was going into lockup at 60 with the stick in 3rd ... Uphill with lots of right foot trying to get above 70 to get to lockup ... Lots of up/downhill today and yesterday and we're towing 1.5T.

    Is this the adaptive shift thing coming into play?

    Sent from my iPad using Braille
    Kev..

    2014 Isuzu MUX LST with fruit
    2008 Isuzu D-Max
    2015 Kimberley Kamper "Classic"

    Gone ... 2004 D2a Td5 Auto "Classic Country" Vienna Green
    Reply With Quote Reply With Quote
  5. 1st September 2015, 07:43 AM #5
    PhilipA
    PhilipA is offline Swaggie Subscriber
    Join Date
    Jan 1970
    Location
    Avoca Beach
    Posts
    14,162
    Total Downloaded
    0
    Yes It's a quirk I have noticed on mine.

    It will lock going uphill at over 60 Kmh in third on moderate throttle.

    It confused me as I thought I knew all the modes, but it does that for certain.
    It is a good thing, maybe designed to keep the fluid temp down.
    Regards Philip A
    Reply With Quote Reply With Quote
« ZF 4HP 22 auto trans - simple question! | The rectangular bit of plastic the gear lever boot is glued to. »

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Forum Rules

Search AULRO.com ONLY!
 Search All the Web!