Auto will lurch into PRND21 - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 06-03-2015
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Auto will lurch into PRND21

Have a 2006 4.0 with the auto trans at 70K. On the road, the truck shifts well; not Buick smooth, but like other auto cars and trucks that I've driven and I will notice the upshift.

Shifting in and out of any drive gear or Park, I will feel the truck lurch forward moreso than I've had in other autos. I am not sure why this is happening, but I am wondering if this is something I can do to fix it or if there is something I should keep an eye on.
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Old 06-03-2015
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Mine does this when the transmission is cold and it gets somewhat better when warm,I have no idea what it is.Maybe someone else will chime in.
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Old 06-03-2015
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Reads like a computer problem, even with cold idle of 1,200rpms it should ease into gear not lurch.
There have been quite a few TSB with Ford automatics, if possible have a Dealer run your VIN and see what TSB's come up.
While '06 is well past warranty Ford still pays dealers to fix safety issues and you could just need a software update in the computer
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Old 06-29-2015
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had a hard shifting issue with a mercury topaz and that just required a fluid change every 2 years.
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Old 06-29-2015
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Had a similar issue, Ford did a software update on my 07 FX4 and that seems to have cleaned things up. Not perfect but much better.
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