A4 trans problem

[95formula383lt1]

On my fiances 1999 firebird, with a 1994 lt1 engine wire harness computer an all swapped into it, and a 1996 corvette 4l60e with a Tci 3200 stall, we just got it running and have been driving it a lil bit with no issues. took it for a longer drive today, 2 times around the block beating on it a lil bit, then the 3rd time i got on it hard it kicked down into 2nd and then started pulling and then acted like it slammed into neutral and just kinda slipped till i backed off then got back in it, now it keeps doing this. Trans has 74k miles on it, converter has 2k on it, you can find the pics in the 99lt1swap thread i have on here in the swap section, on page 9 post 87. So far trans doesnt have a aftermarket cooler on it, and it laid in my garage upside down with the pan off for 2 months put had rags over the valve body till i put a new filter and fluid in it. And the trans that i pulled outta the 1994 did the same thing thats why we got the newer corvette tranny, the 1994 had a trans am performace shift button but was not hooked up so im thinking wtf maybe its in the computer, but the 1994 4l60e pan was full of clutch metal bad. the corvette one had very little and fluid was clean.

thanks for any advise or help in advance!

[warnerTA]

fuel filter? i have heard when the fuel filter gets clogged it can be mistaken that the tranny is slipping?

[95formula383lt1]

ehh no its more along the lines of tranny just straight not grabbing when its hot lol. i do need to get a new fuel filter on there thanks for the reminder the tank was open for awhile an outside so i wanted to change the filter after the 1st start even though it is a new one lol.

[popo8]

What tranny fluid are you running?

[popo8]

And does the 4L60e have band adjustments?

[95formula383lt1]

valvoline dextron, and im not sure about band adjustments i know nothing about them but ill try and check into that.

[popo8]

Can anyone tell me what tranny fluid the 4l60e should be running, and if there is band adjustment for the 4l60e''s, hopefully this gets resolved before theire clutches get burned up, or any other damage happens....

[95formula383lt1]

yes thank you ur the only one and like 2 others that seem to be helping me lately. i know absoultly nothing about a 4l60e lol.

[popo8]

Me neither, but I got an idea where to start. Make sure the fluid is the right fluid, and if there is a way to adjust bands.... do it before clutches get cooked.

[popo8]

Is your tranny fluid still full. I remember you said you were having a leak issue. Also if there is a way to make sure it is flowing and cooling, make sure it is.... Heat kills....

[95formula383lt1]

yea the leak was i guess it got overfilled when the lines were leaking and then fluid started pouring outta the drain vent. that tranny doesnt seem to be getting hot when i touch the fluid on the dip stick. im not sure how to check the flow but if i take the lines outta the rad fluid drips out? fluid level is a little high and fluid looks good. i may try new fluid an a lucas trans stop slip additive, whats a good fluid brand and type for it?

[popo8]

I can check with the guys at the garage tomorrow.. Im not sure. I know when my 140,000 mile montero started slipping, we drained the oil and filled it with TRICK SHIFT. never slipped again, but Ive heard good and bad about TRICK SHIFT and It aint cheap either....

[95formula383lt1]

yea that b&m trick shift or the hurst stuff, i havent heard nothing about it. but it does have some cheap stuff in it now, i think its a mix of valvoline (which leaked out) and some othe off brand now that i think about it.

i hope i didnt hurt the clutches, i drove it 3 times and its has slipped BAD about 4 or 5 times.

[popo8]

What year is the transmission???? Im texting with the guys at the garage now for you?

[95formula383lt1]

oo and the last time i drove it it didnt slip at all, but after i got on it an drove normal it was shifting funny like it didnt kno if it wanted to shift or not.

[95formula383lt1]

What year is the transmission???? Im texting with the guys at the garage now for you?

thank you popo. it is a 1996 corvette 4L60E with a tci 3200 stall.

[95formula383lt1]

heres pics after i got it

http://i626.photobucket.com/albums/tt348/Britnie6388/trans006.jpg
http://i626.photobucket.com/albums/tt348/Britnie6388/trans005.jpg
http://i626.photobucket.com/albums/tt348/Britnie6388/trans004.jpg
http://i626.photobucket.com/albums/tt348/Britnie6388/trans002.jpg
http://i626.photobucket.com/albums/tt348/Britnie6388/trans001.jpg
http://i626.photobucket.com/albums/tt348/Britnie6388/trans007.jpg
http://i626.photobucket.com/albums/tt348/Britnie6388/trans011.jpg

[popo8]

thank you popo. it is a 1996 corvette 4L60E with a tci 3200 stall.


My pleasure, I wana see this car on the road just as much as you guys , believe it or not...

I have been texting our tranny guy and he believes your trans should have DEXTRON III in it, but he is making sure.

[95formula383lt1]

i believe it does have dex 3 in it, but its a mix of valvoline and a off brand from walmart (it was thanksgiving day and srung a bad leak it was all they had)

[popo8]

i believe it does have dex 3 in it, but its a mix of valvoline and a off brand from walmart (it was thanksgiving day and srung a bad leak it was all they had)


Well , I m waiting for an answer to see about band adjustment, as well as tuning cababilities since its the E (4l60)

[95formula383lt1]

My pleasure, I wana see this car on the road just as much as you guys , believe it or not...

I have been texting our tranny guy and he believes your trans should have DEXTRON III in it, but he is making sure.

i believe you, u have already helped us out so much and been there through the build from day one. thank you!

[popo8]

Thats how I roll......

[95formula383lt1]

pics of the fluid thats in it

http://i626.photobucket.com/albums/tt348/Britnie6388/transfluid001.jpg
http://i626.photobucket.com/albums/tt348/Britnie6388/transfluid002.jpg
http://i626.photobucket.com/albums/tt348/Britnie6388/transfluid003.jpg

[popo8]

Well, unless I can get you answer quick about other issues, but either pickup some high quality tranny fluid, or even the trick shift.....

Just remember, you are going to need to drain everything, fill it again.... then drain it and fill it again I know it can get costly, but you gotta get it outta the torque converter etc......

I wish you lived closer , Id say lets go to the garage and getting this thing right tonite....

[95formula383lt1]

Well, unless I can get you answer quick about other issues, but either pickup some high quality tranny fluid, or even the trick shift.....

Just remember, you are going to need to drain everything, fill it again.... then drain it and fill it again I know it can get costly, but you gotta get it outta the torque converter etc......

I wish you lived closer , Id say lets go to the garage and getting this thing right tonite....


thank you... it doesnt have a headlight harness so idk if that would work driving it to the garage lol. but that would be awesome if i lived closer.

but we will have to wait awhile till she gets paid or i get on umemployment again lol to get some new fluid for it till then ill leave it in the garage an wont start it or move it. then when we get the money thats the 1st thing we will do. and then we will get the trick shift stuff. thanks again for the help and no rush on the answer take ur time.

[popo8]

You know me man.... I will get that answer ASAP!!!!

One condition, I get to drive it when we come to FL, if your ol lady (jk) allows.....

[95formula383lt1]

You know me man.... I will get that answer ASAP!!!!

One condition, I get to drive it when we come to FL, if your ol lady (jk) allows.....

lol of course you can you have ur hands in it just as i doo its got ur parts in it!

[popo8]

thank you... it doesnt have a headlight harness so idk if that would work driving it to the garage lol. but that would be awesome if i lived closer.

.


Thats cool, I have the keys to the ANSWER!

[Chris]

Sounds like exactley what my trans is doing. According to what I am informed its hitting stall wall and will go away once I get my tune completed.

AS well , IIRC 94-95 Transmission electronics are different than 96-97 because she solienoids are pulse width modulated , Though I believe this is only on the tcc side so you may have lockup issues

[95formula383lt1]

Sounds like exactley what my trans is doing. According to what I am informed its hitting stall wall and will go away once I get my tune completed.

AS well , IIRC 94-95 Transmission electronics are different than 96-97 because she solienoids are pulse width modulated , Though I believe this is only on the tcc side so you may have lockup issues

so basicly if i put better fluid in it an drive it easy it shouldnt have a problem an the trans will be fine, but if i beat on it and get on it hard and slip it then im going to eat up the clutches?

it has been acting fine an still does till it warms up and then its fine till it down shifts at WOT and then it slips out and i have to let off.

"AS well , IIRC 94-95 Transmission electronics are different than 96-97 because she solienoids are pulse width modulated , Though I believe this is only on the tcc side so you may have lockup issues" what does all that mean lol i know nothing about automatics, im a t56 person lol

[95formula383lt1]

Thats cool, I have the keys to the ANSWER!

lol find us a cheap house up there an a awesome morgage lender and ill be good to go.

[proace4]

chris is right! i have an A4 car as well and i had to have my car tuned for it. it would run ok for a little while and then it would just slip. if yo ucall ion at madtuners he will make you a kit for pretty cheap. or yo can just get on shobox. its just a difference in the plugs from year to year. earlier years either had and extra prong or missing a prong(its late and i'm "studying" for my finals). if you just run a wire from the computer to that prong in the harness, it will run ok! good luck! i hope this is whats wrong.. its easy to fix!!!

[95formula383lt1]

thanks!! ill look into it for sure! i hope thats the issue an hope i didnt drive to long like that.

and yea the big fat connector that plugs into the trans had the same amount of pins and all, but the trans is a 1996 and everything else for the car is 1994.

[popo8]

lol find us a cheap house up there an a awesome morgage lender and ill be good to go.


Dont tempt me.....

[popo8]

thanks!! ill look into it for sure! i hope thats the issue an hope i didnt drive to long like that.

and yea the big fat connector that plugs into the trans had the same amount of pins and all, but the trans is a 1996 and everything else for the car is 1994.


Whatever the case may be I still highly suggest good tranny fluid. Not necessarily the 7 bucks a qt Trik shift.... Fingers crossed for you, Im lost on the connecters and comp controlled trannys....

[Chris]

I doubt the issue here is the fluid I really do. I think the issue lies within the tune and stall. The only way that would be the issue is if the original owner used a trick shift or firm shift fluid and I doubt from a corvette the dealer would put it in for the guy.

As for hurting it I have just been cruising in my car till I get a tune , with no issues, drove it 400 miles to school no issue, Take it for a cruise , dont beat on it to hard get it tuned and have at her



What rear end is in the car? Btw the ls1? lt1 gear ratio etc

[popo8]

I am just leaning towards fluid or bands because the issue only happens when there is temp in the car....

Again, I do not know much about 4l60es..... sorry I cant help more...

[95formula383lt1]

I doubt the issue here is the fluid I really do. I think the issue lies within the tune and stall. The only way that would be the issue is if the original owner used a trick shift or firm shift fluid and I doubt from a corvette the dealer would put it in for the guy.

As for hurting it I have just been cruising in my car till I get a tune , with no issues, drove it 400 miles to school no issue, Take it for a cruise , dont beat on it to hard get it tuned and have at her



What rear end is in the car? Btw the ls1? lt1 gear ratio etc

so all that has to be done is get tuner cats and tune it? why does it only do it when its hot? the vin number says it has a the lt1 rear is a 273, but theres junk yard writing on the housing so im going to have to check it out when i jack it up one day. do you have a aftermarket cooler on urs?

[95formula383lt1]

Dont tempt me.....

lol if we can get a morgage in her name or wait till i get a job an get it in my name and find jobs in the area of the house were serious about it.

[95formula383lt1]

Whatever the case may be I still highly suggest good tranny fluid. Not necessarily the 7 bucks a qt Trik shift.... Fingers crossed for you, Im lost on the connecters and comp controlled trannys....

def getting diffrent fluid in there i complete forgot it has that off brand stuff in there. thank you for all ur help though.

[proace4]

i have a 94 or 95 C4 4l60e and i think the pins matched up on it in the plug and harness but on the new lt1 4l60es the harness was different or at least on the last one i purchased...(pos lvl 10 BS!). anyways the converter will not lock for some reason once its over the stock stall height or level. now its not always gonna be that it happens right at 1800-2400. the vette trannys have a slightly lower stall i think? not sure. my old tranny would stall to 2400 if i could keep the car from moving and the new one is about 1800ish. call ion and tell him what you have done and he will tell you if chris and i have good guesses or if popo is right and its all in the fluid! lol plus a phone call costs nothing unless you're out of minutes or something, or on a land line. and in that case. phone card!

[95formula383lt1]

i have a 94 or 95 C4 4l60e and i think the pins matched up on it in the plug and harness but on the new lt1 4l60es the harness was different or at least on the last one i purchased...(pos lvl 10 BS!). anyways the converter will not lock for some reason once its over the stock stall height or level. now its not always gonna be that it happens right at 1800-2400. the vette trannys have a slightly lower stall i think? not sure. my old tranny would stall to 2400 if i could keep the car from moving and the new one is about 1800ish. call ion and tell him what you have done and he will tell you if chris and i have good guesses or if popo is right and its all in the fluid! lol plus a phone call costs nothing unless you're out of minutes or something, or on a land line. and in that case. phone card!

lol alright thank you im calling him im just trying to get a better understanding about it before i call so i dont sound like a complete idiot.

[Chris]

Yes I have a cooler on mine , I have a 3knitrous stall my car temps run at 150 cruising to 220 if I continuously get on the gas pedal which is right where it would run through the radiator.

My car didnt do it at first though once it go a heat up cycle and the shift adapts started to mess with the setting of the stall thats when it acted up. I have like .4sec adapts on my downshift causing a flair and my 1-2 upshift is messed up because my rear end ratio is off. Thats why I asked you about the rear end

[95formula383lt1]

Yes I have a cooler on mine , I have a 3knitrous stall my car temps run at 150 cruising to 220 if I continuously get on the gas pedal which is right where it would run through the radiator.

My car didnt do it at first though once it go a heat up cycle and the shift adapts started to mess with the setting of the stall thats when it acted up. I have like .4sec adapts on my downshift causing a flair and my 1-2 upshift is messed up because my rear end ratio is off. Thats why I asked you about the rear end

yea i just took it around the block and took it easy light to mid throttle it seem to be slipping a bit, trans wasnt hot it was a quick start and around the block.

shes ordering a cooler for it when she gets paid and some good fluid too and a tune. talking to ion about it now.

[Chris]

yea i just took it around the block and took it easy light to mid throttle it seem to be slipping a bit, trans wasnt hot it was a quick start and around the block.

shes ordering a cooler for it when she gets paid and some good fluid too and a tune. talking to ion about it now.


If it is truely slipping , Putting in brand new fluid will only make it worse ( unless you use some of the additive stuff popo talked about) I would get a tune, see where that brings you. Maybe the shift adapts need to adjust for this transmission.

A Automatic transmission is designed to slip. When you start to have increases and flairs putting in brand new slippery fluid is only going to increase the issue that may have been what happened as you replaced it, The trans has almost 100k on it right? From a corvette to so its more than likley been beaten on

[95formula383lt1]

yea it as 74k, from a mint 96 corvette guy had dealer stickers and stuff and all. however he was replacing the tranny with a performabuilt level 2 and 3k stall. but the trans you can tell was well taken care of and fluid changed when needed. he was a older guy who has kids an his other car was a mini van. corvette stays coverd in the garage. my dad just drove it an it didnt slip at all just now lol.

[Chris]

90% sure its computer related.

[95formula383lt1]

and what do u think the other 10% is? the trans magnet looked pretty decent when i got it and it hadnt been opened since it came u could tell.

[Chris]

5% that pwd issue 2.5% Kinked lines or line pressure 1% fluid 1%burnt clutches .5% It just being a lt1 product

[95formula383lt1]

5% that pwd issue 2.5% Kinked lines or line pressure 1% fluid 1%burnt clutches .5% It just being a lt1 product

lmao. line pressure could be a big issue, i had also started the car an moved it when that big fat connector was connected a few times. and that fluid thats in it is super thin, the fluid that came out was good thick stuff when i got it. im going to check the lines when it cools off its jacked up ready an waiting.

and i dont wanna hear the burnt clutches thing were broke so cant afford none of that. lol

[Chris]

Go get a tune

[95formula383lt1]

ok ill stop driving it till we get one. thanks!

[95formula383lt1]

heres Ion's responce thank you for having me contact him!

Hi,

Which engine harness are you using? If you are using a 94 harness, it is missing a wire for torque converter pulsewidth modulation.
You can go to this link:
http://shbox.com/1/harness_connector_faces.htm (http://shbox.com/1/harness_connector_faces.htm)

Then select 4L60E in the lower left corner. The PWM wire is in the "U" location. You will need to run this wire to the PCM's blue connector (D6):

http://shbox.com/1/1995_pcm_conn_d.jpg (http://shbox.com/1/1995_pcm_conn_d.jpg)

I would suggest that you get a tune for your current setup before you try to troubleshoot issues. There are so many different variables involved with your setup that it is not worth trying to troubleshoot on a stock tune.

Ion

[popo8]

Watching and waiting.... very curious.

[95formula383lt1]

im curious too. so i guess, fluid tune first then try the wire prong thing that i dont quite understand, me an wires dont get along. lol