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Old 05-23-2005, 05:59 PM
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out of 1st too soon.

I have a C4 transmission, and the thing shifts out of first gear way too soon. Right when you take off it shifts with a little throttle, with a lot it feels like it keeps wanting to shift and does, still way too soon. Second to third shift is just about unnoticeable. It reminds me of a chev tranny with the tv cable removed or something. Anyone know what could cause this? I don't have the kickdown cable hooked up, but that's just for passing gear correct? Or does it hold pressure similar to a tv cable? I thought the modulator valve controlled the shifting, but that is new.

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Old 05-23-2005, 06:19 PM
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I think that the kickdown linkage has to be hooked up for it to shift properly.
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Old 05-23-2005, 07:59 PM
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if the modulator is new, I wonder if the 'pin' was not re-installed?

There is a round metal pin between the valve and the vacuum modulator.

If the pin is there..... check inside the hose barb of the modulator where the vacuum hose plugs on. IF there is a blade type screw there.... thread it in 2 full turns and test drive.


A pin .040 - .060 longer than the OE pin length will provide later / slightly firmer shifts tooo
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Old 05-23-2005, 09:23 PM
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i put the old pin back in...it just sits in the modulator on the side that goes into the tranny correct? I'll try adjusting it I guess. Where can I get this longer pin?
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Old 05-25-2005, 07:55 AM
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you make a longer pin from a welding rod or some simular material


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Originally Posted by woedend
i put the old pin back in...it just sits in the modulator on the side that goes into the tranny correct? I'll try adjusting it I guess. Where can I get this longer pin?
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