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Zf Wont Shift Up!


Dadowiz

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  • Member For: 15y 4m 2d

Hi all, I have searched the forum pretty extensively and I apologise if I missed something.

My ZF Gearbox is not shifting up gears when I have planted the foot to overtake someone. Basically If I put my foot down the gearbox is holding the lower gear in high revs (around 4,000+) and wont shift up. I know the box is designed to keep the lower gear in case I need the power again, etc. BUT I have held it reving high around 8+ seconds and it still wont shift up. Obviously I have it in D mode and the only way to get it to shift up is to move it to Sport Shift Mode and do it manually.

Has anyone had this problem and can offer a fix? The car is standard other than a upgraded air box and filter, 19" wheels. Thanks in advance for your help!!

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  • loitering with intent
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  • Member For: 21y 2m 26d
  • Gender: Male
  • Location: Zombie Birdhouse

Stock or modded get a service done on it. spoton.gif

Use Tranamax Z fluid. Do not let Fraud near it unless under warranty. even thenbangcomputer.gif

Does it hold until the top of 4th gear ?

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  • Member For: 19y 11m 19d

Gear hold, fast-off throttle (Automatic modes)

Upshifts are prevented when the throttle position sensor detects the driver has instigated a rapid lift off of the throttle pedal (fast off) and maintains the current gear until the driver tips-in (reapplies throttle pressure). It also helps prevents shift busyness in sporty driving and inhibits the ‘running away’ feeling when cresting hills.

Source: BF Falcon II press release

Did you hit the accelerator again?

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  • No boost, no bottle, just my foot on the throttle!
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  • Member For: 20y 9m
  • Gender: Male
  • Location: Sydney

Disconnect the battery and reset the ECU.

I have had my car do it before, mainly going around a corner. The gearboxes can be a bit too smart sometimes :innocent:

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  • The Cleaning Dudes Ute
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  • Member For: 18y 7m 1d
  • Gender: Male
  • Location: Bentleigh, Vic, Australia

My box is doing the exact same thing. Ever since I had my car tuned it has done it. I had it serviced, still the problem remains.

I've given up on D and Performance mode and only drive it everywhere in tiptronic because I can make it shift properly.

Really hope the Xcal3 zf tuning can get rid of it.

I havent however tried disconnecting the battery...

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  • Member For: 15y 4m 2d

Ok so I took the car to Ford and to a transmission specialist just to have a quick chat and Ford tell me that I would be crazy to service the ZF as it should never be opened.. They wanted between $80-$120 to have a look at it and then said that a fix would probably be in the region of a couple of thousand dollars. This is before they even know what the problem is!!

I took it to a transmission shop and he said to hook it up to the system and test it will cost approx $80. He thinks it is going to be an electrical issue as the box is fully electronic. I told him I would get back to him.

I stuck my head under the car and it appears there is a transmission fluid leak somewhere so I think the fluid level is low causing the box to do funny things. I am going to get the transmission specialist to service it (Approx $350) and find the leak ($??) and hopefully problem solved.

Funny how things work. As soon as I found out I was getting a nice tax return my Ford starting having issue, my Pajero died, my Toshiba laptop decided (1 month out of warranty) to break and my 3 year old LCD TV has died!!

that's life!!

Anyone had any leaks on the ZF and know approx costs? I read about a couple where the wiring loom goes in, any ideas? Thanks!!

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