TCC lockup.

SATURN5

SATURN5

Dr. Frankenstang
Joined
Oct 10, 2009
Messages
1,165
Reaction score
29
Location
in the shop
Anyone know the parameters of the TCC?

I get a chugging/bucking during light acceleration between 30-45 mph. No codes being tossed, I'm worried that it might be damaging the TC. It accelerates great from a dead stop, hits second hard enough to spin the 275's for about 10 feet. Everything upshifts as it should.

Guess the question is, can the TCC lock/unlock points be changed with a programmer?

BTW, stock gears, no trac lok...
 
SATURN5 said:
I get a chugging/bucking during light acceleration between 30-45 mph. No codes being tossed, I'm worried that it might be damaging the TC. It accelerates great from a dead stop, hits second hard enough to spin the 275's for about 10 feet. Everything upshifts as it should.
Click to expand...

isn't that the torque converter shudder? fluid flush fixed mine. the old fluid breaks down and the TC clutches won't hold, and ford uses that stupid steady state slip thing. so the clutches hop. similar to a posi without friction modifier.
chugging/bucking/felt like i was driving down a gravel road.
mine also shifted fine at WOT.

SATURN5 said:
Guess the question is, can the TCC lock/unlock points be changed with a programmer?
Click to expand...

yes. i believe so. this is suggested when you get a higher stall converter because the TC lockup can become somewhat more aggressive than the stock converter.
 
Okay... I'll give that a try. The trans was redone by the PO, at 110K, and it just rolled 140K. Thanks!

Have the hubs arrived?
 
Well, at least I know it won't hurt to flush it. It "feels" like it's an ignition miss, but that should toss a code.

Enjoy the swap!
 
You have TC shudder and it's pretty much going to stay with you. The TC is commanded to lock up at around 37 to 39 mph at normal driving conditions. Putting newer fluid in is probably going to make it worse. Try to hunt down a 98, 99, 00, 01, 02 trans and swap out the electrical internals, which is easy. 20 min job once both transmissions are side by side and upside down.

Do the J-Mod while the newer one is out and upside down. That's less than $10.00 and maybe 30 min time. Swapping electrical internals means swapping out the main wiring harness (and solenoids) from your old trans to the new one and then you don't have to worry about re-pinning a harness. Install your new trans that has all newer updated parts and no one way clutch and better clutch plate material.
 
NoLimit95 said:
You have TC shudder and it's pretty much going to stay with you. The TC is commanded to lock up at around 37 to 39 mph. Putting newer fluid in is probably going to make it worse. Try to hunt down a 98, 99, 00, 01, 02 trans and swap out the electrical internals, which is easy. 20 min job once both transmissions are side by side and upside down.

Do the J-Mod while the newer one is out and upside down. That's less than $10.00 and maybe 30 min time. Swapping electrical internals means swapping out the main wiring harness from your old trans to the new one and then you don't have to worry about re-pinning a harness. Install your new trans that has all newer updated parts and no one way clutch and better clutch plate material.
Click to expand...

he has a rebuilt trans with 30k. don't think a flush will hurt it cuz its pretty new.
 
chris2523 said:
he has a rebuilt trans with 30k. don't think a flush will hurt it cuz its pretty new.
Click to expand...

It might not but I would almost step out on a limb here and say they didn't do what they said they did with his TC. If that's the case, his friction materials are starting to let him know. I guess if the fluid that's removed is nice and red and doesn't smell burnt, it shouldn't make any difference. If it's burnt and dark colored, a flush is gonna kill it quicker. Laser will chime in on fluid swaps.
 
he didn't say they did anything with his TC.

not sure why people hate the early trans so much. i had TC shudder at 140k. flushed it. rolled it another 30k, to 170k. rebuilt it. no problems since. 182k.
 
Trans has a new TC (Marauder) and the guts were upgraded to late model stuff, with a trans shift kit.

The transmission was completely rebuilt 10,000 miles ago with all new internal components and some Ford racing components including torque converter. It also has a Trans Go stage 1-shift kit
Click to expand...

But, yeah, I'll start looking for a later trans just in case.
 
I think the reason for the hate on the pre-98 trans is parts failure and the one way clutch. Don't get me wrong, I have the original 95 trans in right now and not one bit of shudder. That's another reason I wanted to hurry up and get the J-Mod done to it because the ECU is also commanding an additional 15 psi more fluid pressure. Mine and yours is (talking to Chris) lol. You have the J-Mod already so you should be good to go. I bet you have a hell of a 2nd gear with the gears you have, ECU, and J-Mod


@SATURN5
If all of that was done to that trans and it's not a rebuilt TC, I don't see why it would be doing what it's doing. Any kind of warranty with that rebuild?
 
I doubt it. It was rebuilt prior to my purchase. I have no reason to doubt the work done, the PO got it from his grandfather and took incredible care of it.

It's annoying in the city, highway speeds are just fine...

Tempting to just deal with it, save up/gather parts for a T3650 swap....
 
SATURN5 said:
I doubt it. It was rebuilt prior to my purchase. I have no reason to doubt the work done, the PO got it from his grandfather and took incredible care of it.

It's annoying in the city, highway speeds are just fine...

Tempting to just deal with it, save up/gather parts for a T3650 swap....
Click to expand...

If you stay on roads 50 mph or lower, leave the O/D off and that will help out a little bit on the shudder.
 
I'll check the wires/plugs, but those were all changed just two years ago. But, anything is possible. Whips out Fluke 87V meter...


Nolimit, I've heard that's a bad thing... IIRC, not running OD shuts "oiling" off????
 
SATURN5 said:
I'll check the wires/plugs, but those were all changed just two years ago. But, anything is possible. Whips out Fluke 87V meter...


Nolimit, I've heard that's a bad thing... IIRC, not running OD shuts "oiling" off????
Click to expand...

Never heard of the fluid being cut off just because the O/D button was off. If that was the case, a lot of us would have burnt up transmissions. There are many of us on the board that run with O/D off on 45 to 50 mph speeds or under. I promise, you're not shutting off your oiling.
 
SATURN5 said:
Okay... I can live with that. Thanks for the help/info.
Click to expand...

Just give it a shot with O/D off at the lower speeds in the city and see if the shudder eases up any. Another trick you can try is have O/D on and when you know it's in 4th, keep your foot on the gas at a steady pace. Barely press the brake pedal, just enough to make the brake lights come on and that should knock you out of O/D and back into 3rd. Let off the break and it will go back into O/D. Whatever you do, don't do any manual shifting. That is very bad for pre-98 transmissions.
 
I'll give that a try...

No, I don't manual shift (I'll admit I've done a couple times), because my tach is fubar'd and I don't want to fubar the engine...

Anyway, I've got the SVO to bangshift in..
 
It sounds like you have an ignition or fuel delivery issue. Verify both first.
Also, get a trans tune from somebody where the lockup is moved to 50+ MPH 4th gear only and slightly alter the shift points.
I personally prefer it to happen exactly at 60mph, assuming of course you're running a stock stall type converter.
As long as there is a decent sized trans cooler in the system heat won't be an issue.
You will love your car much more though, especially in the city.
 
I've worried about the pump as I believe it is original, and plans this weekend are new pads up front and changing the fuel filter.

I checked the fluid at lunch, not burnt, and good color. Looked to be a tad low on the cold end of the stick tho.

Yeah, fiddling with the programming would be nice too... Guess I need to poke Craig Moates and see if he offers anything...
 
Check fuel pressure at the rail.
I have a cheap gauge I can run up under the hood and hold it in place with the windshield wiper.
Then you can check pressure while driving when the issues pop up.

Get a tune you will never be sorry.

One reason I went with a gen 2...obd11
 
NoLimit95 said:
I think the reason for the hate on the pre-98 trans is parts failure and the one way clutch. Don't get me wrong, I have the original 95 trans in right now and not one bit of shudder. That's another reason I wanted to hurry up and get the J-Mod done to it because the ECU is also commanding an additional 15 psi more fluid pressure. Mine and yours is (talking to Chris) lol. You have the J-Mod already so you should be good to go. I bet you have a hell of a 2nd gear with the gears you have, ECU, and J-Mod
Click to expand...

its actually a bit much at at times. like in the rain. or while turning and accelerating onto the blvd. gotta watch it.

SATURN5 said:
Tempting to just deal with it, save up/gather parts for a T3650 swap....
Click to expand...

thats tempting, and my transmission is just fine!

NoLimit95 said:
Never heard of the fluid being cut off just because the O/D button was off. If that was the case, a lot of us would have burnt up transmissions. There are many of us on the board that run with O/D off on 45 to 50 mph speeds or under. I promise, you're not shutting off your oiling.
Click to expand...

i have heard of that, and also heard it was bogus.
 
ford nut said:
Check fuel pressure at the rail.
I have a cheap gauge I can run up under the hood and hold it in place with the windshield wiper.
Then you can check pressure while driving when the issues pop up.

Get a tune you will never be sorry.

One reason I went with a gen 2...obd11
Click to expand...

Yeah, Ive got one too.

On the wish list....

It's a 96... :)
 
Good!

Ask Santa I guess.....off the wish list.

Yep 96=odbII :)

Maybe its time to tune it! :D
 
You must log in or register to reply here.

Members online

No members online now.
Total: 434 (members: 0, guests: 434)
Back
Top