W will34 Member Jun 16, 2019 18 1 13 ontario May 4, 2020 #1 May 4, 2020 #1 I have 1969 c4 tranny. It will not shift from first to second when put into drive. I have been as high 3000 rpm. It will shift from second to third when starting off in D2.
I have 1969 c4 tranny. It will not shift from first to second when put into drive. I have been as high 3000 rpm. It will shift from second to third when starting off in D2.
G gmgouin 15 Year Member Jul 9, 2012 8 3 13 May 4, 2020 #2 May 4, 2020 #2 Probably a vacuum line signal loss.
horse sence 15 Year Member Nov 29, 1999 12,165 7,975 233 Wile Coyote's stunt double May 4, 2020 #3 May 4, 2020 #3 Vacuum line or maybe blown out modulator valve
rbohm Founding Member Apr 12, 2002 6,698 550 204 tucson,az May 4, 2020 #4 May 4, 2020 #4 yep, sounds like vacuum modulator issues. either no vacuum, bad modulator, or bad adjustment on the modulator(yes some are adjustable).
yep, sounds like vacuum modulator issues. either no vacuum, bad modulator, or bad adjustment on the modulator(yes some are adjustable).
