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

700R4 won't shift up....

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Old 02-28-2008, 06:01 AM
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700R4 won't shift up....

I have a 700R4 gearbox attached to my 305 Crossfire.

The box shifts keenly into reverse, drive,overdrive etc. But, it won't go up to 2nd, 3rd....

There is fluid in the box, fresh fluid too.

Is there a cable, pump, electric gizmo that could be causing it or is it time for a new box/rebuild etc?
Old 02-29-2008, 03:38 PM
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Car: 85 IROC
Engine: LB9
Transmission: 700R4
Axle/Gears: 3.42
Re: 700R4 won't shift up....

is this a suddenly new issue? or is this a new car to you or new tranny install?
Old 02-29-2008, 10:02 PM
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Car: 1988 camaro z28,1997 camaro lt1
Engine: 355 afr 195 heads,tpis big mouth
Transmission: 700r-4 built by me 3-4 z pack
Axle/Gears: 3.42
Re: 700R4 won't shift up....

check the governor gear
Old 03-02-2008, 09:33 PM
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Car: 88 IROC
Engine: 5.0 tpi
Transmission: 700 r4
Re: 700R4 won't shift up....

while you have the gov. out make sure the valve moves freely. with the gear pointed up move press the butterfly weights and realese a couple times. if the valve doesn't move you have a hung valve.
Old 03-02-2008, 09:40 PM
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Car: 84 Berlinetta
Engine: 332 CI
Transmission: TH400
Axle/Gears: 3.08
Re: 700R4 won't shift up....

I had that probleam once and it turned out to be my TV cable just needed to be reset. i would try that and see if it helps.
Old 03-03-2008, 02:54 AM
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Re: 700R4 won't shift up....

Thanks to everyone who replied. I shall take a looka t some of these things next time I get chance to work on the car.

Steven
Old 03-05-2008, 12:23 AM
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Re: 700R4 won't shift up....

Just had this problem with my transmission. I replaced the governor gear and it fixed the problem.
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