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Rough shift between 1st & 2nd


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bernsax
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Sep 29, 2011, 9:56 PM

Post #1 of 5 (1909 views)
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Rough shift between 1st & 2nd Sign In

I have a 1999 Ford Taurus with 137,000 miles, automatic transmission. It has a 24 valve 3.0 engine. At about 100,000 miles, it started to occasionally shift rough between 1st and 2nd. It doesn't occur all of the time and only when it has been driven for some time and is warmed up. When this first started happening a few years ago a mechanic told me it wasn't the transmission and said to just drive it and put up with it. It happens more frequently now. Is this something that is common with the Taurus and is it an easy fix? I really don't want to get stranded. Any advice would be appreciated.


Tom Greenleaf
Ultimate Carjunky / Moderator
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Sep 30, 2011, 7:31 PM

Post #2 of 5 (1873 views)
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Re: Rough shift between 1st & 2nd [In reply to] Sign In

You can get stranded by anything - even a horse! At the miles depending on use it could be several things and I'm not a trans specialist.

I suggest taking to a transmission shop you like for full diagnosis. Expect if the trans is the fault for a total overhaul of it IMO at the miles,

T
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Long retired now


dr.donut
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Oct 2, 2011, 8:01 AM

Post #3 of 5 (1847 views)
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Re: Rough shift between 1st & 2nd [In reply to] Sign In

I have the 97 taurus and a friend told me they are known for trans problems, when it "clunks" into 2nd what I believe is happening is the bands grab onto the drum in the trans and if the drum is not perfectly round it will preferably grab it in one position only, giving you the "clunk", only a rebuild can fix it, in some vehicles I used to back off the peddle at the shift point to make it as easy as possible


Hammer Time
Ultimate Carjunky / Moderator
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Oct 2, 2011, 11:20 AM

Post #4 of 5 (1843 views)
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Re: Rough shift between 1st & 2nd [In reply to] Sign In


Quote
I believe is happening is the bands grab onto the drum in the trans and if the drum is not perfectly round it will preferably grab it in one position only, giving you the "clunk"


No, I don't think so.




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Discretesignals
Veteran / Moderator
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Oct 2, 2011, 12:05 PM

Post #5 of 5 (1839 views)
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Re: Rough shift between 1st & 2nd [In reply to] Sign In

It wasn't uncommon for the AX4N and AX4S to have problems with second gear shift flares and harsh engagement. Most of the time the flares where caused by the bonded intermediate clutch piston. The harshness could be caused from a line pressure spike since the line pressure is computer controlled or some type of internal problem in that hydraulic circuit or apply component. Best bet is to have a transmission shop diagnose it, as Tom stated.





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