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

Shifting at 3k no matter what

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Old Aug 2, 2007 | 04:27 PM
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Demon355's Avatar
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Shifting at 3k no matter what

No matter if I have the pedal floored or 1/4 throttle, my trans shifts at 3k. How do I get rid of this or at least move the shift higher? Pisses me off to no end when I want to either pass someone or just get moving.
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Old Aug 2, 2007 | 04:33 PM
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: Shifting at 3k no matter what

Stuck throttle valve?
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Old Aug 2, 2007 | 04:44 PM
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Re: Shifting at 3k no matter what

I was going to take my trans in anyway to get checked out and possibly rebuilt when I do the new stall swap. Where is the throttle valve? Easy to fix myself?
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Old Aug 2, 2007 | 04:49 PM
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: Shifting at 3k no matter what

It's in the valvebody of the transmission.
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Old Aug 2, 2007 | 04:52 PM
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Re: Shifting at 3k no matter what

Check the TPS maybe.... I know my v6 bird had linkage connected to the throttle cable that served as a load sensor for the trans...... maybe you have the same thing?
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Old Aug 2, 2007 | 04:56 PM
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: Shifting at 3k no matter what

The TPS has nothing to do with the transmission. The cable you're referring to is the throttle valve cable, which is what actuates the throttle valve in the valvebody.
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Old Aug 2, 2007 | 05:36 PM
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Re: Shifting at 3k no matter what

If you want to solve this yourself, you could add the TransGo Shift kit for the fix, or the Performance Shift kit. Is the fluid still look good? Did this happen all at once? How many miles on this unit?
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Old Aug 2, 2007 | 05:38 PM
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Re: Shifting at 3k no matter what

Don't know the miles on the trans. Fluid looks good. It already has a shiftkit installed. Perhaps just needs a rebuild?
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