Re: [Chrysler300] 300M Down Shifting Hard

["Warren Anderson" <wranderson@xxxxxxxxxxxxx>]

Hi Group,

I just did a transmission service on my 2002 300M and now it's down shifting
hard from 3rd to 2nd  when slowing down at normal speeds (around 30mph). It
feels like a downshift with the Auto-stick.

The service I did was to drop the pan, change the filter and gasket, and
refill (5 ½ quarts) the transmission with ATF plus4 fluid. I did not flush
or drain the torque converter. I was careful to remove the old "o" ring and
replace it with the new one provided. This was the first time this car has
had a trans. service (53,000 miles).

Chrysler Technical Service Bulletin 2-004-04 is the latest fluid use
bulletin we have. The 2002 300M is on the list of vehicles to NOT use ATF+4.
So, first, I would suggest you verify  that +4 is OK or not for your car
through your Chrysler dealer.

Using any sealer on a trans pan is an invitation to disaster. Gasket you put
on your trans should be reusable type ($)and installed bone dry (as we are
here in AZ). Best policy for any trans pan on any vehicle BTW.

Factory may use 'silicone' on the assembly line and the stuff then makes
filter change job unnecessarily  complicated. Stuff is used as factory
assembly time saver and will get vehicle through warranty.

May end up having tech ride shot gun with factory DRB scanner and check
shifting. Computer will detect some shift problems and turn on Check Engine
Light.

Also, could be engine mounts as mileage is right for problems in that area.
Power jack in driveway (carefully!) and check engine movement, drive and
reverse.

Warren Anderson
Sedona,AZ



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