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A/T 4speed fails, car wont move until hot.
you can only watch it get worse
or at the least change the filter. why at post 109, the filter is still not changed, out... why?
heck you could even put back the old AFT that drained out on the fear , that the new ATF will cause more sludge to clean off all the parts and do bad things.
i cant see inside your box. no man can.
only you do do service and pick what to do and take your own risks. (there are no guarantees ever, when seen? you paid for it.... i promise ,grin)

still no new filter. after 109 posts.

if the engine runs lean, the trans shifts late.
if the engine power is low for any reasons the trans will shift late
if the TV cable sticks (at 3 points) it will shift late
if the TCM sees funny things, from the TPS, it will shift late.
if the transmission slips, it will shift late or not at all.
both the ECu and TCM can have bad CAPS this year, causing very odd things.....

if the filter is dirty the the trans slips in drive, until the fluid gets hot, the stall test will heat the ATF fluid faster...
if seals in the trans are bad, as all are after 20 years, (never seen any last that long) then......

if line pressure is low
and the the clutch packs slip, they are doomed , to early failure..... do not let it slip.
the line pressure is checked cold and hot.
but doing after a new filter, is SMART.

if the line stall test shows early failure (not in gear) we abort the test. why do more harm.?

are you running snake oil in that box?

skipping filter?
what have you done to the box in 100 posts.
anything, ?
most A/T never self heal, ever. they progress to worse, as the parts that are bad, get worse (wear) as all parts do ...

my guess, is there are 2 or 3 problems in car (driveline). (as most this old all have....)
that no start, with code 12 jumper in place is a bad , demon...

the filter new is slam dunk, and skipped.
the controversy is here. (a double wammy, cheap owners and fibbing EPA)
http://www.fixkick.com/IGN_timing/tune-u...ontroversy

the shift late issue, (all else ok)
does the TV cable work end to end, 3 points of checks.
move at front
moves in middle
moves at the trans TV valve, even the valve rod can rust and jam, did it?

the TCM can delay shifts
and the mech, TV valve can too, inside the trans.

on newer cars the TV is gone, the ECU can tell the TCM all facts, needed.

the diaper needs changing
why the delay/?

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Messages In This Thread
4sp, car wont move cold. - by fixkick - 08-26-2014, 09:21 AM
car wont move cold. - by fixkick - 08-27-2014, 01:54 AM
RE: A/T 4speed fails, car wont move until hot. - by fixkick - 10-17-2015, 09:49 PM

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