banging from 1st to 2nd

[sefi]

Hi.
i have a small transmission shop in ISRAEL. a client of mine has a 2007 V8 explorer that clanks hard from 1st to 2nd when its cold. i also noticed a very light rumble that lasts two-three seconds when downshifting from 2nd to 1st.
also somtimes, when downshifting to 1st, it does`nt engaging for a second or two.
any known diseases before i take down the pan?
btw, transmission has 70K miles.
thanks
sefi

 

[Explorer_PL]

The 07 v8 has 6r60 tranny, and they all have the issue of 2-1 shift. 1-2 is unusual. There are some computer updates but overall it's a hit or miss. Even the 2010 and 2011 F150's with similar 6r80 still have issues.

I would not drop the pan for that, although it's a good idea at this mileage to change the filter and fluid.

Mine 06 has 149k miles on original 6r60 and still runs pretty well.

 

[sefi]

it has 1,2,3,D and an overdrive button.
do you still think its an 6R60?
which letter in the VIN indicates the tranny?

 

[Explorer_PL]

All Explorers with 24 valve (3valve per cylinder) 4.6 v8 from 2006-2007 have 6r60, 2008-2010 have 6r80 (same tranny, higher torque).

The 4.0 v6 have 5r55 I believe.

the VIN will not tell the tranny, just the engine, the 8-th digit should read "8", which is the code for v8.

 

[rusty813]

if you goto fordparts.com and enter the vin number, it will say the tranny type