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Anonymous Posted on Oct 24, 2017

4R70W transmission No 1st or overdrive

I have a '96 Mustang with a '00 Crown Vic trans. Had to shorten the driveline, swap shift lever, all the sylinoids, speed sensors. My overdrive light works when you push the button, but doesn't change anything, and it won't go into first, even if you shift it manually. Any solution? Or did I miss doing something in the swap?

5 Related Answers

Anonymous

  • 64 Answers
  • Posted on Aug 21, 2008

SOURCE: 1996 TBird 4.6 auto/overdrive trans problem

Your transmission fluid contain water,thats why the colour of the fluid changed to pink.And of such the clutch is slipping causing the engine to reve up before shifting - Check transmission cooler.

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wjtbenji

  • 2 Answers
  • Posted on Sep 29, 2008

SOURCE: 1998 Ford Explorer

there is an sensor on the speed odmeter cable on the side of transmission. it will kill thr overdrive and cruise control but not the speedometer. about $50.fixed 2 explorers that way

Anonymous

  • 1 Answer
  • Posted on Apr 15, 2009

SOURCE: f150 transmission neutralizes when shifts to overdrive

I have that exact same truck and transmission and My Transmission did the exact same thing about a year ago and there was some kind of snap ring inside the transmission that broke. I originally thought it had to be an electirical problem because the truck shifted fine until OD or if i turned OD off. The 4r70w is a light transmission and i would suggest you have a shift kit put in and they make a heavier kit to beef it up.. Sorry its probably not the new you were looking for.

Anonymous

  • 2 Answers
  • Posted on Aug 13, 2009

SOURCE: automatic transmission not shifting into 3rd or 4th

my 1999 f250 super duty will not shift into overdrive

Anonymous

  • 3 Answers
  • Posted on Nov 10, 2010

SOURCE: i have a 1991 ford

check to see if the computer is getting proper voltage on the yellow wire if that is not it ckeck the large red wiresmy dads truck had this problem last year the yellow wire was defective in the harnes the tack and the transmission work off the computer trust me it is a simple fix run a new wire from the solinoid on the pasenger side to the computer relay on the driverside and replace the relay too

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Will a 2000 Ford Mustang aode/4r70w 4.6L be a direct replacement with a 2000 Ford F-150 aode/4r70w 4.6?

it has to fit,sure.
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I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867

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F150 transmission neutralizes when shifts to overdrive

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Transmission trouble

Transmission model is a 4R70W,totally electronic,no vacuum to the trans.A common failure on that transmission is the 1-2 accumulator springs...they break,causing a harsh 1-2 upshift.An accumulator is a mechanical/hydraulic assembly also called an accumulator piston.It is made from steel with rubber lip seals bonded to the steel.The accumulator piston takes a certain portion of the hydraiulic fluid produced when the 1-2 upshift happens,and strokes up and down with springs providing resistance.It acts as a hydraulic shock absorber for the 1-2 upshift,providing cushion.When the springs break,it no longer provides shock absorption,hence the harsh upshift.It is located just inside the trans pan,on the passenger side front of the case.It is retained in the case with a cover and a round snap ring about 2" in diameter.A new piston and springs can be purchased from a transmission repair shop,or better yet,have them check the assembly for broken springs.Good luck
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