yes, the cam cogs, are funky chickens, false marks ! that is my page, 1st to do it ever. on the web back in 2007.
http://www.fixkick.com/slush-pump.html
stuck in 1st gear hot?
ok a 3speed, (no OD lamp, transmission has a vacuum modulator, no 4sp does) the 3speed has no warning lamps ever.!!
(classic fails cold) first gear dead (drive)
the 3speed, is different. very much so. than the 4speed, vast diffs.
its is all 100% mechanical.
my guess, is the transmission fails in first gear cold, 2nd works cold,
no tech talk
ok the fsm covers all the tests for the 3speed but is steeped in tech and tools.
the FSM shows simple tests parked, called ON CAR TESTS. Tranny in car.
Nero tests, thumbs up, thumbs down on trans.:
Ill just list them and common failures.
1: stall test. hot and cold, yours will fail the cold test? the stall test is easy , i can show a video, it takes 5 seconds...
2: pump pressure low, cold, , you replace the pan filter (or screen clean) and bingo, cold ATF fluid now passes thru the filter, 50k mile service does work... bla bla.
3: vacuum modulator is known to fail in many ways, leak and make engine smoke, leak inside, causing late shifts or non hot. (my guess yours is ok)
but on old cars, its best to just put a fresh one on.
http://www.fixkick.com/slush-pump.html#MOD
4: the Governor can fail or its tiny screens, love to fail COLD, and will cause late shifting and not 1st gear failures.
5: detent TV , passing cable valve stuck open, causes late shifting all the time. hot or cold
so my guess. is the filter is clogged.
do a real full flush, and filter, do not skip the filter like the jokers at jiphphylube do , or kwix...... THE PAN MUST BE DROPPED. (drained first ask)
best practice on 3sp, do the 50k, get the gasket, and the drain plug kit, use a huge oil catch bin (I use a huge plastic tub) to catch the oil, 1st time
then clean or replace the filter, (some years screens others filters) then install the new drain plug.
put it all back. with new gasket , then go to any full flush service and do the full flush
the above only gets a tiny amount of ATF in the pan, there is vast more in the clutch.
This is a very cheap fix. $100?
and tell your mech, there is no sensors in the 3 speed, its the same transmission in a 1975 jeep mail carrier truck, yah , a very old , design.
http://www.fixkick.com/slush-pump.html
stuck in 1st gear hot?
ok a 3speed, (no OD lamp, transmission has a vacuum modulator, no 4sp does) the 3speed has no warning lamps ever.!!
(classic fails cold) first gear dead (drive)
the 3speed, is different. very much so. than the 4speed, vast diffs.
its is all 100% mechanical.
my guess, is the transmission fails in first gear cold, 2nd works cold,
no tech talk
ok the fsm covers all the tests for the 3speed but is steeped in tech and tools.
the FSM shows simple tests parked, called ON CAR TESTS. Tranny in car.
Nero tests, thumbs up, thumbs down on trans.:
Ill just list them and common failures.
1: stall test. hot and cold, yours will fail the cold test? the stall test is easy , i can show a video, it takes 5 seconds...
2: pump pressure low, cold, , you replace the pan filter (or screen clean) and bingo, cold ATF fluid now passes thru the filter, 50k mile service does work... bla bla.
3: vacuum modulator is known to fail in many ways, leak and make engine smoke, leak inside, causing late shifts or non hot. (my guess yours is ok)
but on old cars, its best to just put a fresh one on.
http://www.fixkick.com/slush-pump.html#MOD
4: the Governor can fail or its tiny screens, love to fail COLD, and will cause late shifting and not 1st gear failures.
5: detent TV , passing cable valve stuck open, causes late shifting all the time. hot or cold
so my guess. is the filter is clogged.
do a real full flush, and filter, do not skip the filter like the jokers at jiphphylube do , or kwix...... THE PAN MUST BE DROPPED. (drained first ask)
best practice on 3sp, do the 50k, get the gasket, and the drain plug kit, use a huge oil catch bin (I use a huge plastic tub) to catch the oil, 1st time
then clean or replace the filter, (some years screens others filters) then install the new drain plug.
put it all back. with new gasket , then go to any full flush service and do the full flush
the above only gets a tiny amount of ATF in the pan, there is vast more in the clutch.
This is a very cheap fix. $100?
and tell your mech, there is no sensors in the 3 speed, its the same transmission in a 1975 jeep mail carrier truck, yah , a very old , design.
http://www.fixkick.com