The Ax4n - Page 2 - Taurus Car Club of America : Ford Taurus Forum
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post #11 of 45 (permalink) Old 08-06-2009, 02:55 PM
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AX4**** is no better:

a) BANG: when u put from Drive to Reverse

1 -> 2 shift is delayed and jerky. If you start from stop as a grandma, RPMs around 1600 - 1700, the
1 to 2 shift jerk is little softer. Anything abobe 2k RPM is jerky.

c). if you pay attention, you can always feel the 2 -> 1 down-shift.
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post #12 of 45 (permalink) Old 08-07-2009, 12:32 PM
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My AX4N does not shift hard into reverse. Also my 1-2 Shift is smooth and does not take alot of rpm to make it shift. Normal Driving on my 98 SHO it shifts to 2nd at around 2700 rpm. I can even get it to shift to 2nd at 1500rpm. Personally i dont care for the way the lockup is configured. Used to having the converter lock up after overdrive whereas my SHO the converter locks up then it switches to overdrive.

It takes 8,460 bolts to assemble an automobile and one nut to scatter it all over the road
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post #13 of 45 (permalink) Old 09-04-2013, 04:46 PM
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Really old post, but one thing to somewhat mitigate the initial shift into reverse, pay attention the the RPM. When my 99 'Tec starts, it idles around 1500+ for a while, quite a while if you don't touch anything. Tap the gas even just a little, and it will slowly coast down to 1000 and level off until its warm. I try not to put the car in gear until its down to 1000 rpm or lower. That softens that bang quite a bit.
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post #14 of 45 (permalink) Old 09-04-2013, 05:02 PM
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^This. Good way to help your motor mounts out as well.

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post #15 of 45 (permalink) Old 09-04-2013, 11:17 PM
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I recall reading somewhere that hard shifts in the AX4N are due to a stuck accumulator/damping piston. This issue is either due to something being broken, or something being stuck with that piston. It is some piston that is supposed to depress a spring as pressure increases, and absorb the pressure spike to allow for a slightly more gradual pressure increase to the band pistons(reverse I think). Since reverse is fully hydraulic, once some valve flips, full pressure goes to the pistons as the accumulator isn't doing the job of relieving the pressure spike. I think I read this is a common issue with these transmissions. Second gear may be similarly affected, but I am not sure. If the issue is due to something sticking rather than being broken, then it is possible that a high quality synthetic transmission fluid or flushing after using transmission "tune" type fluid may help this issue. I do not recall if I ever had a bang when going to reverse(2000 AX4N DOHC), but I added Lucas transmission fix for some seal leaks, and I do not have the bang as of yet, though there is a thud. I think adding something like Amsoil transmission fluid would make it better, but I want to do that properly and wait for when I do a full transmission oil change. I think there is a Seafoam trans tune fluid that you add before a flush, but I do not trust it as I feel it will damage seals. I have heard good things about Amsoil, though. Possibly what I wrote is wrong.
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post #16 of 45 (permalink) Old 09-10-2013, 11:59 AM
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I have a 2004 SE with 72K on it and have these issues, or quirks I guess. It does have a slight thump and delay when shifting into reverse and occasionally the 1-2 shift was runs perfectly otherwise.

I've kept up with fluid changes, every 30K miles.

So these things are normal operation? Reassuring if so.
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post #17 of 45 (permalink) Old 09-10-2013, 02:04 PM
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VSS issue no?

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post #18 of 45 (permalink) Old 09-10-2013, 03:53 PM
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Originally Posted by ShelbyRacer78 View Post
VSS issue no?
You are correct, the answer is no. But you were in the ballpark, 2004 uses transmission speed sensors and OSS
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post #19 of 45 (permalink) Old 09-17-2013, 12:16 AM
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Hello! Tell me please, if there are any differences between the 96 transmission and 2000 transmission (ax4n)
What should I know to swap it?
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post #20 of 45 (permalink) Old 09-17-2013, 12:40 AM
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Check the Topic Finder and do a site search. That swap is a no go
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