4R70W Automatic Transmission Issue?

6stang · August 7th, 2011, 01:04 PM

I am still trying to get my ('97 V6 running right, but now I have a new problem with the tranny.
When I put the car in R to back out of my spot it clicks right into gear with no problem. However when I put the selector lever into D/2/1 it wont go into forward unless I rev the engine up to almost 4000rpms sometimes. and is now starting to jump out of gear even under power....
I am nervous that this (seemingly minor electrical) issue will worsen/become mechanical if I drive it too much more with this probblem.
Any technical info and/or advice would be greatly appreciated

mangogirl205 · August 7th, 2011, 03:45 PM

Hey 6stang,

I don't know alot about this issue but maybe another person will chime in.There are alot of guys/gals on here who know alot. I hope what ever it is you get it resolved soon.

mangogirl205 · August 7th, 2011, 03:45 PM

Hey 6stang,

I don't know alot about this issue but maybe another person will chime in.There are alot of guys/gals on here who know alot. I hope what ever it is you get it resolved soon.

Lumoon · August 7th, 2011, 03:58 PM

Service record on the transmission?

If your one of the never been serviced crowd I fear this will get expensive quick.

it could be one of several things.
Filter clogged
valve body springs wearing out
clogged valve body
bad clutch packs o the forward gears

this may help you it is the best resource for the 4R70W I've found TCCoA Tech Articles

mustangmike! · August 7th, 2011, 07:00 PM

take that SOB to a tranny shop and talk to them. While your at it. Start looking for a new tranny on CL or something. V6 auto's are easy to find usually

Redfiremustang · August 7th, 2011, 07:12 PM

sounds like an torque converter.

Green_6er · August 7th, 2011, 08:06 PM

sounds like your clutch packs are going bad.

6stang · August 7th, 2011, 09:55 PM

I just had the tranny rebuilt by a friend as a favor. my used jmodded vale body and new b&m trick shift auto trans fluid. Onstalled by myself with a remanufactured torque converter. Under 5k miles on the rebuild though. :/

Loki · August 7th, 2011, 10:02 PM

With automatics, you have to take it to a shop. They'll plug it into their scanner and it'll show what's working. Did this in class before, you'd be surprised at the info those things give you! Lol, but I'm not sure exactly what your problem would be. I would take it to a shop first. If they can't figure it out thru a scanner, they'll have to pull it apart to check it out & pressure test to make sure clutches are engaging properly, etc..

I HATED working on automatic transmissions -____-

6stang · August 12th, 2011, 07:45 PM

1st gear replaced, she goes like a raped ape now! thanks for the help guys.

August 7th, 2011, 01:04 PM	#1
6stang Regular 1997 Pacific Green 3.8 Join Date: Sep 2007 Location: Duxbury, Massachusetts. Posts: 227 iTrader: 0 reviews	4R70W Automatic Transmission Issue? I am still trying to get my ('97 V6 running right, but now I have a new problem with the tranny. When I put the car in R to back out of my spot it clicks right into gear with no problem. However when I put the selector lever into D/2/1 it wont go into forward unless I rev the engine up to almost 4000rpms sometimes. and is now starting to jump out of gear even under power.... I am nervous that this (seemingly minor electrical) issue will worsen/become mechanical if I drive it too much more with this probblem. Any technical info and/or advice would be greatly appreciated __________________ -Nathan (formerly known as Stang3.8) Last edited by 6stang; August 7th, 2011 at 01:06 PM. Reason: typo

August 7th, 2011, 03:58 PM	#4
Lumoon Regular 2001 Mustang V6 Its a V6 Join Date: Mar 2011 Location: Fairfield, Ohio Posts: 460 iTrader: 0 reviews	Service record on the transmission? If your one of the never been serviced crowd I fear this will get expensive quick. it could be one of several things. Filter clogged valve body springs wearing out clogged valve body bad clutch packs o the forward gears this may help you it is the best resource for the 4R70W I've found TCCoA Tech Articles __________________ Done so far: 3.73 w/ lsd rear end. custom 91 octane tune by R Style Performance rebuilt 4r70w 24% UDP pulleys aluminum drive shaft Windstar ready to be installed pending ported lower intake arrival

August 7th, 2011, 07:00 PM	#5
mustangmike! I Post Entirely Way Too Much 2004,1994,1967 14.37 @ 96 Join Date: Aug 2008 Location: Texas Posts: 6,018 iTrader: 1 reviews	take that SOB to a tranny shop and talk to them. While your at it. Start looking for a new tranny on CL or something. V6 auto's are easy to find usually __________________ 227whp N/A V6 Now w/ 8th Mile 8s ! How To Jmod Your Late Model 4R70W

August 7th, 2011, 07:12 PM	#6
Redfiremustang Regular 2003 V6 pony package Join Date: Jul 2011 Location: Greenville, NC Posts: 61 iTrader: 0 reviews	sounds like an torque converter. __________________ 2003 Pony Package 3.8L Mello-Tone XPS Exhaust - true duals 2.5" after cats to 3" tips Stock 17 inch chrome wheels. CAI,Tuned,tinted 35%

August 7th, 2011, 09:55 PM	#8
6stang Regular 1997 Pacific Green 3.8 Join Date: Sep 2007 Location: Duxbury, Massachusetts. Posts: 227 iTrader: 0 reviews	I just had the tranny rebuilt by a friend as a favor. my used jmodded vale body and new b&m trick shift auto trans fluid. Onstalled by myself with a remanufactured torque converter. Under 5k miles on the rebuild though. :/ __________________ -Nathan (formerly known as Stang3.8) Last edited by 6stang; August 7th, 2011 at 09:56 PM. Reason: Typo

August 7th, 2011, 03:45 PM	#2
mangogirl205 Regular 2001 V6 Mustang Vert. Join Date: May 2011 Location: MD Posts: 266 iTrader: 0 reviews	Hey 6stang, I don't know alot about this issue but maybe another person will chime in.There are alot of guys/gals on here who know alot. I hope what ever it is you get it resolved soon.

August 7th, 2011, 10:02 PM	#9
Loki Enthusiast 1996 V6 Join Date: Feb 2011 Location: Connecticut Posts: 632 iTrader: 0 reviews	With automatics, you have to take it to a shop. They'll plug it into their scanner and it'll show what's working. Did this in class before, you'd be surprised at the info those things give you! Lol, but I'm not sure exactly what your problem would be. I would take it to a shop first. If they can't figure it out thru a scanner, they'll have to pull it apart to check it out & pressure test to make sure clutches are engaging properly, etc.. I HATED working on automatic transmissions -____- __________________ 1996 3.8L.. Split Port Swap, CAI, True Dual Exhaust, the car accident mod. Need cheap parts? CLICK MEEEEEEEEE!! =]

August 12th, 2011, 07:45 PM	#10
6stang Regular 1997 Pacific Green 3.8 Join Date: Sep 2007 Location: Duxbury, Massachusetts. Posts: 227 iTrader: 0 reviews	1st gear replaced, she goes like a raped ape now! thanks for the help guys. __________________ -Nathan (formerly known as Stang3.8)

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