Auto Trans 1995 GT No first Gear

ok so i ran 100 miles with the lucas in the trans, flush and filter done.

then let it sit overnight

this morning i started and went from nuetral to first while sitting still about 50 times, work it loose

drove it basically same thing, first works fine until the trans gets HOT, not just warmed up.

I had a selectable first gear for 5 miles (tested at stoplights).

But after 5 miles of hard takeoffs in drive, to ensure it not only warmed up but was hot like it would be in city driving, no first gear, again it does move, its bound up like maybe its selecting to gear at once, it moves forward under power and feels like a brake is on.

It is SLIGHTLY different than pre-lucas additive, prior to lucas after the trans was hot it really didnt move forward, it loaded the trans down and then when u let off the gas it lurched like it was releasing

Now it trys to move forward, and will move forward, but its binding and will stop if u let off gas, i dont move it forward much like that I dont want to burn anything.

So it definitely is heat/warm-up related, once hot the problem begins.

i agree, between my post and yours I went and found one and am dropping it off tomorrow

ok, heres an update, i'll cut to the chase, seafoam for trans

fixed it in 20 minutes

no for more details, trans place couldnt dupe problem, cause they didnt roadtest properly, i did and it still did it, then they decided it needed a 2,000 rebuild. I took car from them and searched for transmissions. Went to the auto place and this week they had seafoam for transmissions, last week theyt didnt, all they had was lucas, it did nothing, dumped 8 ounces in, sat in parking lot and shifted N 1 N 1 N 1 for 10 minutes. Problem is gone

ok the seafoam did and did not solve the problem, but now it is solved, and after 1,000 HARD miles, local, flooring it here is the final solution

Added 8 more ounces of seafoam AND a cooler.

This problem originally happened once trans was warmed up, few miles (heat)

Adding seafoam HELPED but when trans was driven farther it re occured intermittently. You could drive at 10 mph and try manually shifting into 1st and 80% of the time it would, 20% of the time it bound up as if in 2 gears.

Prior to giving up, I added 8 more ounce of seafoam, then drove home with a plate type oil cooler, took about an hour to add the cooler.

Since the cooler was added, ZERO problems with first gear, ZERO.

I will also add that these auto trans are famous for SHUDDER, and the solutions range from replacing the fluid with mercon to replacing the torque convertor.

I can tell you one thing that will FIX that shudder forever, ADD HP, and can be done for little money and in under an hour.

Go to americanmuscle.com and order the SCT 4-Bank Eliminator Chip w/ 3 Free Custom Tunes (94-98 GT) 270 bucks

I added that chip and it REALLY WORKS and it FIXED the trans shudder

The reason is Ford, to satisfy EPA, has the shift points all screwed up to reduce air and increase mpg by lugging the engine everywhere.

I added the chip and get BETTER mpg and BETTER performance and BETTER power and BETTER driveability.

I will add to this as time goes on if things change, but I have driven with the chip 1500 miles now, and I would HIGHLY HIGHLY HIGHLY recommend it for the 94 95 stangs.

The computer is hidden to the right of the passenger foot, u remove the computer, remove a slot cover and toss it, plug in this daughter board, run a rotary switch from it to somewhere (i just placed mine in the glovebox) then select mode 1 2 3 or 4 to go back to stock (and shudder).

EXCELLENT PRODUCT

update, transmission still running good, i have a rare occasional problem with first gear as before, very rare though and clears up on its own. Tonight Im drianing the trans and convertor and refilling it all with Mercon V and a new filter only cause i got 40% off at autozone so i got 26 quarts.