im concerned with a current trans issue i have before i begin i have already changed the trans filter and fluid and the tcc solonoid my issue is when you put the shifter into reverse (th125c) car struggles to backup on its on. reverse is there and i lifted the car off the ground and the wheels spin so i know i have reverse would this mean i need to adjust the tv cable if so how do i do this. my next issue is the tcc solonoid im not sure if its normal to have the delayed shift out of 1st when you really get on it but i notice a really rought shift coming from 2nd into 3rd and when you let off the gas it shfts hard. i followed the instructions on how to install it but im not seeing a difference from the old to the new.

If I am correct, the TV cable should have nothing to do with your reverse issue. The TV cable controls the shift points of your forward gears.

i havent ever messed with itall of this arrised about 2 weeks after i changed the fluid im not hard on her either imo the internal of the trans looked fine better than some ive worked on this seriously has me puzzeled because i was able to backup on some occasions. im guessing if there was an internal failure the wheels wouldent even turn in reverse.umm i pulled the side of the trans once before everything seems to bit good there wasent anything blocking the passages. and i was running the car before without the tcc solonid hooked up because i thought that rough shift from 2nd to 3rd was annoying. sorry if i make no since i bought a fiero and have been restoring it since day one so some things are new to me.

There is a clutch that is applied when you put it in reverse. If the clitch is slipping or having trouble building preasure you could easily be having the issue you are talking about. Unfortionatly, it is likely a internal transmission issue.

If your transmission has trouble moving the car in reverse, and has a delayed 1-2 shift, it probably needs to be rebuilt.

If all you are looking for is TV cable adjustment tips here is a link where Fierobsessed helped me.

https://www.fiero.nl/forum/F.../HTML/093280.html#p5

makes since really sucks exactly why i hate automatic transmissions like i said i think the previous owner just abused the car and i refuse to spend 1600 + to rebuild it i may have to hunt down a trans.

Do some research, these tranny's are plentiful out there. They used them in a few GM cars. I use triple nickel in Chambersburg, PA whenever I need to find a tranny for any vehicles. The TH125 I just bought for my Fiero only cost me $250 and has 50,000 miles on it. They give you the history of the vehicle it came out of when you get parts from them. Also these TH125s are good trannys, but every tranny will fail after enough abuse. But you should be able to find yourself a decent tranny for under $500. Triple Nickel will also ship, if you want, Google them and give 'em a call. I would recommend them anytime.

thats good i think th only reason i havent gotton into that is the whole fact that id get one and it wouldent work im going to shop around all the fieros around me are high milaged id prefer to convert to a 4 or 5 spd but i hear its costly

$1600? Never do it.

I bought my used TH125C here in PFF Mall for about $300 and it was freshly rebuilt with about 3K on it. Working like a champ. Another alternative is the 4T60 many people rave about for the 4th gear.

thats my thought too im not about to pay that kind of labor/any mods i would have to do to 4t60e

Never pressure clean internally the fiero automatic ,,if you or a shop pressure cleaned this cloogged up the transmission,, the goop loosened up cloggs the exhaust check valve
If fluid drained from transmission smelled bad this would be a burned forward clutch..
next most common piston seal ring damaged 3rd is sticking or clogged exhaust valve.4th(remote chance) modulator bad,vacuum hose split or fluid leak ,check coolant lines for leak,, check modulator line for fluid in it((a bad modulator causes harsh or delayed shift
if it slips or the forward clutch is burned removal split case time..
when changing fluid in fiero auto the pan must be cleaned immaculately because if dirt on bottom is loosened the new fluid releases it and sends it to do utmost damage
the Fiero automatic transmission is far far superior to the crappy manuals
this is one of the easiest auto transmissions to rebuild.
a good used auto is the best option..
the other gm (4t60) transmission swap,, is not like judging the ms. Hawaiian Tropic bikini contest described by some forum members check out forum search on this..
many tranmissions have been saved by LUCAS additives,,I have never used them myselve ,but most recently I recommended this to a friend(89olds,auto V6) and it worked... this is a stab in the dark worth risking $15.00 ,since its not my $15.00..
the proper ajustment of the T V valve cable often repairs many evils,,info is available in Fiero manuals(also many older GM cars manuals) just have the manual open beside you as you ajust the first time
make sure T V cable and shift cable are moving freely lube if needed..check for kinks
T125c fiero auto is not fussy about what it eats,, but make sure you inserted the proper tranny fluid,use latest G M dexron
Biggest problem with fiero auto is lack of maintenence,,with engine hot,, fluid should be at the full mark ,almost warm at 70o does not always work.. engine trans HOT eyeball !! full or very close to it,,,,, NOT over full mark.
backing up and throwing T125c in forward before complete stop,,will destroy a T125 after 3 to 15 years ((1 to 3 years normal tranny))
this info mostly comes from MOTOR auto transmission manual and my deranged melon..

[This message has been edited by uhlanstan (edited 08-27-2008).]