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Transmissions and Drivetrain Need help with your trans? Problems with your axle?

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Old 10-23-2009, 11:47 PM   #1
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Join Date: Oct 2006
Location: oxford n.c.
Posts: 427
Car: 1991 transam
Engine: 305 30 over
Transmission: 700r4
Axle/Gears: 4:10

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700r4 rebuild problem

had my trans rebuilt shifts thru all four gears, but when downshifting itll downshift from 4-3,3-2, but when going into first its like you just put it in neutral. you can slow down to about 2 mph and itll shift to first and pull just fine, but if you let off the throttle its back to neutral.you can rev the engine and it wont pull until you slow back down to 2 mph. is it something in the valve body maybe? oh the trans pulled and shifted fine before rebuild ,it just lost 3-4 so i had it rebuilt now this.if you guys have any ideas im wide open to try them.all clutches and band were replaced. valve body was removed for cleaning all new gaskets and filter.could it be electrical?the guy that rebuilt it does it a lot ,i just couldnt get in touch with him today,so thought id ask here thanks,jimmy
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Last edited by 1fastam; 10-24-2009 at 10:59 AM.
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Old 10-26-2009, 09:31 PM   #2
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Join Date: Oct 2006
Location: oxford n.c.
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Car: 1991 transam
Engine: 305 30 over
Transmission: 700r4
Axle/Gears: 4:10

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Re: 700r4 rebuild problem

i carried it back today ,we checked the governor . it was fine. we think we have it figured out. i just carried the trans to him ,he didnt ask the year of the car. seems it matters what year it is.82-87 get a checkball that 88-92 doesnt and he thinks he put it in there. taking it back tomorrow to pull valvebody off to see. hope it fixes it.i will update when i find out,jimmy
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Old 10-27-2009, 01:54 AM   #3
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Join Date: Nov 2008
Location: sacramento california
Posts: 348
Car: 64chevelle/smokey trans am
Engine: 350 p600 pro charger/350
Transmission: 350/700r4
Axle/Gears: 3.36

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Re: 700r4 rebuild problem

yeah, on the valve body the early takes 3(one of them is big), and the late takes 2 both standard 1/4" balls. BTW under the separator plate there is a difference in the checkballs. on a no aux v.b. it takes one near the shifter and the later with aux. v.b doesn't because it has an encapsulated ball next to the l/r piston. Hollar back if you need to know "for real" how they are supposed to be.
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Old 10-30-2009, 08:23 PM   #4
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Join Date: Oct 2006
Location: oxford n.c.
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Car: 1991 transam
Engine: 305 30 over
Transmission: 700r4
Axle/Gears: 4:10

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Re: 700r4 rebuild problem

update, he hasnt called to bring it back,yet gonna call him tomorrow . i will update later. (guess i wasnt thinkin with my dipstick),jimmy
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Last edited by 1fastam; 11-19-2009 at 03:41 PM.
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Old 11-02-2009, 10:53 PM   #5
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Join Date: Oct 2006
Location: oxford n.c.
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Car: 1991 transam
Engine: 305 30 over
Transmission: 700r4
Axle/Gears: 4:10

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Re: 700r4 rebuild problem

called today ,said call back after wednesday. well see ,jimmy
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Old 11-07-2009, 10:23 PM   #6
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Join Date: Oct 2006
Location: oxford n.c.
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Car: 1991 transam
Engine: 305 30 over
Transmission: 700r4
Axle/Gears: 4:10

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Re: 700r4 rebuild problem

ed o you have a pm ,jimmy
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Old 11-19-2009, 03:44 PM   #7
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Join Date: Oct 2006
Location: oxford n.c.
Posts: 427
Car: 1991 transam
Engine: 305 30 over
Transmission: 700r4
Axle/Gears: 4:10

Classifieds Rating: (0)
Re: 700r4 rebuild problem

took it back today we pulled it down to the case the ball we thought was in it wasnt. i did notice however it only had 1 ball in the valve body, instead of 2 (in the valvebody itself) i thought it was suppose to have 2 balls in it,jimmy
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34, 700, 700r4, 91, ball, check, downshift, electrical, kit, location, locations, lost, problems, r4, rebuild, trans, transmission
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