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Old March 4th, 2008, 10:00 PM   #1
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Default Ford C6 Tranny Shift Lag

Anyone had any problems with their auto c6 taking a good 4 or 5 seconds to shift into drive? Have one in a 79 F150 and it has no problem shifting into reverse but lags going into any forward gear.

Guys i bought it from said it needed to have something on side of it replaced to fix the problem.

Any thoughts?
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Old March 5th, 2008, 08:37 AM   #2
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sounds like the vacuum modulator is crapping out. the second thing is to check for fluid. it may just be a colapsed vacuum line going to it. I have pulled the lines off them and found fluid pouring out. if this is the case replace the modual and refill your trans. also make sure the detent linkage is adjusted right on the carb. if you hold down the gas pedal with the engine off the link should be pushed down fully. if its not adjust the screw till it is.

FYI! if you change the vacuum modualator be careful of the apply pin. they fall out on the ground if your not looking for it. if it does there will no diff in the amount of apply pressure ever. make sure the pin is in when you put the new modual in. secondly it may already be gone if some already did this step.
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