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Transmission will not engage

Tiny
ANGLEMIRE
  • MEMBER
  • 1996 CHEVROLET TAHOE
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 145,000 MILES
Okay, I rebuilt engine and put another trans in it 4l60e same as old but when I put in gear it drags engine down but won't move and if I pull fuse you can hear Ang feel in engage. Tries to go but won't. I'm at a loss. Pump working and new shift solenoids.
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Wednesday, October 2nd, 2019 AT 6:35 PM

8 Replies

Tiny
94 TRANSAM
  • MECHANIC
  • 680 POSTS
Hi, welcome to 2CarPros.

What is the history of this transmission? Was it also rebuilt? Or is it used and you don't know the history?

Rich
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Wednesday, October 2nd, 2019 AT 7:19 PM
Tiny
ANGLEMIRE
  • MEMBER
  • 5 POSTS
Don't know, it was given to me. He said it was good. But you know how that goes. Filter was pretty bad so replaced that too. So not sure.
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Wednesday, October 2nd, 2019 AT 7:22 PM
Tiny
94 TRANSAM
  • MECHANIC
  • 680 POSTS
Was the fluid brown or red? Was there any metal shavings in the pan or on the magnet?

Can you unbolt the converter from the flywheel and spin it? See if it spins free or drags.

Rich
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Wednesday, October 2nd, 2019 AT 9:35 PM
Tiny
ANGLEMIRE
  • MEMBER
  • 5 POSTS
Yes real fine sludge on magnet replaced fluid smelt burnt. I believe torque converter will spin easy but I'll try it. You thinking TC? I did the dipstick pump test fluid goes down when running.
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Wednesday, October 2nd, 2019 AT 10:25 PM
Tiny
ANGLEMIRE
  • MEMBER
  • 5 POSTS
And yes before I replaced fluid it was a kinda dull purplish color.
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Wednesday, October 2nd, 2019 AT 10:27 PM
Tiny
94 TRANSAM
  • MECHANIC
  • 680 POSTS
I am thinking the pump is smoked. When you spin it, it should keep spinning and slowly come to a stop. If it stops quickly the pump is likely damaged.

There is also a pressure regulator valve in the pump. If that sticks shut the pressure load will slow the motor also.

Rich
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Thursday, October 3rd, 2019 AT 8:03 PM
Tiny
ANGLEMIRE
  • MEMBER
  • 5 POSTS
Okay, pulling transmission now.
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Thursday, October 3rd, 2019 AT 10:25 PM
Tiny
94 TRANSAM
  • MECHANIC
  • 680 POSTS
OO fun!
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Friday, October 4th, 2019 AT 5:00 PM

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