Automatic Not Shifting Properly
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Joined: Aug 2007
Posts: 59
Likes: 0
From: Westfield Indiana
Automatic Not Shifting Properly
Sometimes in order to get the car to shift properly I need to let up on the gas then re-aply it in order to get the thing to shift. It doesn't happen all the time but is starting to worry me. I've been told the Torque Converting needs replaced and my guy at Autozone says it could be something easy like a shifter selinoid.
How should I diagnose?
How should I diagnose?
Racer
Joined: May 2007
Posts: 370
Likes: 0
From: Cherry Hill N.J.
there is a vacuum line running from the carb to the transmission.
It starts as a rubber line and connects to a metal line near the distributor and back to rubber near the transmission modulator.
The hose near the transmission is probably off the modulator or leaking..
It is a simple fix.....or the modulator needs to be replaced.....or the
kick-down cable needs adjustment......
Good Luck.
It starts as a rubber line and connects to a metal line near the distributor and back to rubber near the transmission modulator.
The hose near the transmission is probably off the modulator or leaking..
It is a simple fix.....or the modulator needs to be replaced.....or the
kick-down cable needs adjustment......
Good Luck.
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,116
From: Crossville TN
It's a vacuum modulator problem. Either the modulator is bad [you can't find the original type of modulators anymore, but any car parts place can sell you a decent replacement part], the vacuum feed line is disconnected somewhere on its route, or the vacuum line is plugged up so that vacuum is not getting to the modulator.
Melting Slicks
Joined: Oct 2002
Posts: 2,317
Likes: 111
From: St Louis MO
Or the vacuum hose is cracked and leaking air into the line. This reduces the vacuum that the modulator sees which raises the shift point(s); letting off the throttle raises the vacuum and allows the modulator to see more vacuum and trigger the shift.
