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454HO · 07-21-2007, 10:06 PM

It's been a while, but I thought the vacuum modulator was only for the 1-2 shift. Maybe check the kickdown switch wiring. If it is shorted to ground it may try and hold 2nd gear too long.

07-21-2007, 10:06 PM	#8
454HO Registered User Join Date: Apr 2005 Location: Austin, TX Posts: 1,224	Re: no 3rd gear in a th 400 It's been a while, but I thought the vacuum modulator was only for the 1-2 shift. Maybe check the kickdown switch wiring. If it is shorted to ground it may try and hold 2nd gear too long. __________________ - Greg