Help!! My 4r70w broke!! - TCCoA Forums
 
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post #1 of 12 (permalink) Old 02-16-2004, 10:41 PM Thread Starter
 
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Help!! My 4r70w broke!!

My 95 4.6 T-Bird decided to ditch 3rd gear. When I reach 3rd gear it just free revs and sometimes 3rd will kick in, usually wont! 1st and 2nd seem fine, so I don't know whats up. I left it at Fords and they said it's probrobly a forward clutch?? And that I'm looking at about 2100 for a rebuild!!

Well, I'm no expert but I thought it might be the 2-3 accumulator becuase I have had delayed 2 to 3 shifts since I bought the car!

Any advice? I can't really afford this at all!! I sure aint paying for a rebuild... heck, I'd buy a used GT tranny before I got a rebuild.

If anyone in the Windsor/Detroit area has a 98 MK8 or 98+ GT 4r70w for sale that would be great. As far as I know the only thing needed to put a newer Stang tranny into a TBird is a flexplate but if anyone know otherwise please inform me!

Thanks,

Jake Dufton
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post #2 of 12 (permalink) Old 02-17-2004, 06:28 AM
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You'd need the flexplate, change the TCC, and re-pin the wiring harness on your car to match the newer transmission's connector. Not a very hard swap to do, and IMHO, better (and cheaper) then rebuilding your '95 transmission.

'95 Cougar - 2002 Explorer engine, 2004 Mustang PTP2 PCM

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Last edited by Cougar281; 02-17-2004 at 06:47 AM.
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post #3 of 12 (permalink) Old 02-17-2004, 09:56 AM Thread Starter
 
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okay, I knew about the wire harness... but what is a TCC?? You need this?

Jake
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post #4 of 12 (permalink) Old 02-17-2004, 11:01 AM
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Tcc is torque converter clutch solinoid.

Search the forums, there is a ton of info on the 98 mark8 swap.

Rip that 95 trans out, it will make a good boat anchor for someone.

Call your greenleaf rep and get a 98 mark8 unit sent to your house, then call dan newman and order the parts you need to make it work.

JH
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post #5 of 12 (permalink) Old 02-17-2004, 03:18 PM
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3rd gear problems like you describe are direct clutch related, not forward clutch related. If they can't diagnose it right, I'd have to believe they couldnt fix it right either. Check my article in WIP forum for any info youll need on swapping in a newer transmission.

96 Mustang GT 5spd. w/ 248A Option (GTS). Stock for now until I get the Roush on.

97 Thunderbird 4.6L LX /w Sport Package
24k B&M Cooler, 1" lowered, Steeda UD Pulleys, Dynomax cat-back, J-mod, 3.73's, PI intake, PI cams, 03 GT MAF/Tube, SCT tuned - Gone but not forgotten.
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post #6 of 12 (permalink) Old 02-17-2004, 03:48 PM
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Another bites the dust...and another and another...sorry LOL

But seriously....$2100.00 You could convery to a T-45, 5-speed for that.

4R70W From DirtyDog
VORTECH BLOWN w/3.12" Reichard ultra-grip pulley
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615 rwhp/500 torque 15.5psi best of [email protected] still needs tuning.
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post #7 of 12 (permalink) Old 02-17-2004, 10:26 PM Thread Starter
 
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well I found a 2000 GT tranny with under 40,000 KM on it for under $1000CDN! So thats not to shabby!!

Jake
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post #8 of 12 (permalink) Old 02-17-2004, 10:44 PM
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Dude call Greenleafauto or keep searching you can find them. your on the right track
don't even think about rebuilding the 95

Wrecked...will be parting out soon 97 thunderbird 02GT 4.6 Bullitt Intake
Kook's true dual 02 4r70w trans completely rebuilt to jerrys specs
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post #9 of 12 (permalink) Old 02-18-2004, 01:19 AM
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Not to start a flame war.. but why do you knock the 94/95 trannies.. I just rebuilt mine (with alot of help) and installed all new clutch packs.. the new mechanical diode.. new accumulators and everything for a little under 500.. the only thing I don't have is the newer main control body.. and if I don't like the J-mod I did on it.. I can upgrade to a Lentec or similar for about 350 bucks.. Yea.. you can get a USED newer tranny for the same price, but I know what's in mine.. do you know what you're going to get?.. any of the 4r70w's are great trannies.. just ask the AOD-E guys.. and rebuilt with the proper components are good to well over 600 HP.. and even then.. I think you'll start breaking other things before your tranny gives out..

If you have decent mechanical knowledge, and a good rebuild book, it's fairly easy to rebuild these trannies.. they only go together one way.. and parts are relatively cheap compared to shop labor.. An example of what I have into mine..

Master Overhaul Kit (all clutch packs, seals and gaskets) $200
Mechanical Diode assembly W/ new drum $165 (from Ford)
New accumulators, springs, 96 Pan (W/ deep sump), new gaskets $100
Rebuild Manual $25

I think it was Socrates who said "That which we do not understand scares us. Therefore, we resort to supernatural explanations to ease our feible minds."

I bet if I put a dissasembled 94, and a disassebled 97 tranny next to each other, most of the people who will tell you the 94 is junk, couldn't tell them apart..

{stepping off soap box}

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Last edited by Thumper91; 02-18-2004 at 02:50 PM.
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post #10 of 12 (permalink) Old 02-18-2004, 10:14 AM Thread Starter
 
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Quick!!! Is a 97 Tbird tranny a direct swap into a 95???

Thanks,

Jake
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post #11 of 12 (permalink) Old 02-18-2004, 01:11 PM
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yes. it's slightly better than a 95 tranny but not as good as a 98.

96 Mustang GT 5spd. w/ 248A Option (GTS). Stock for now until I get the Roush on.

97 Thunderbird 4.6L LX /w Sport Package
24k B&M Cooler, 1" lowered, Steeda UD Pulleys, Dynomax cat-back, J-mod, 3.73's, PI intake, PI cams, 03 GT MAF/Tube, SCT tuned - Gone but not forgotten.
MAMN12 Drag Racing Team [email protected] In need of updated times.
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post #12 of 12 (permalink) Old 02-19-2004, 08:19 AM
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LOL, Thumper, your sig is awesome.

I agree on the rebuilding thing. I rebuilt a transmission this last Summer and it was really not as hard as I thought it would be. It's still going with no problem, too. I don't know about you, but I made friends with a small local transmission shop whom I had clean the case before the rebuild, and they were happy to give me a few snippets of advice here and there. I also had a pretty decent book (Haynes' Rebuilding GM Transmissions) and along with the net, the job went smoothly.

I'm actually kind of looking forward to rebuilding an AOD this Summer, we'll see how that goes.

Josh Keady

1994 Super Coupe ('93 5.0L swap), 1990 Tbird 3.8L, 1982 Honda CB900F, 1972 F-100 SportCustom 4x4, 1970 Chevy Custom Camper / 20
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