1956 Drops back into Reverse from Park

Joined
Jul 15, 2020
Thunderbird Year
1956
Whilst test driving my 56 for the first time, i noticed it dropped back into reverse from park , luckily i was in drivers seat and hand brake was on , any thoughts on rectification?
 
Joined
Jun 3, 2020
Thunderbird Year
1955
Start off with the shifter adjustment, then possibly shift lever bushings. After that checks out inspect the transmission mount. If the mounts are bad the drivetrain can move independently of the shift lever.
 

CSPIDY

Active Member
Joined
Jun 25, 2016
Thunderbird Year
1957
Remove the linkage at either end, there should be detects in the transmission and shift lever.
It should lock into park
 

knuckle47

Active Member
Joined
Nov 12, 2021
Thunderbird Year
1956
This is an area I am currently going to start on. My ‘56 will start in park. Wondering if this was purposely modified? When you Press the shifter release button on top to move the lever into any forward or reverse movement , it all moves the car but, that lever can just be slid from reverse into neutral or drive without pressing the top button. THAT goes against my OCD on manufacturers design and operation….and when I was looking for anything in the shop manual or the Fordomatic manual, there is minimal coverage. A small 4 line blurb about the spring loaded ball and detent piece. I am hoping that when I remove the cover and floor shifter, it will show me a more clear logical approach to fixing this. If someone has a clear tip to provide, I am all ears.

Since it’s too cold to hang out there more than 20 minutes, I can only sit inside and mull it over and over in my mind. Making me more anxious. :)
 

CSPIDY

Active Member
Joined
Jun 25, 2016
Thunderbird Year
1957
The shifter bracket has notches
so unless those notches are completely wiped or worn out
I would suspect the is an issue with the shifter knob spring or pin
Have you tried to start it in drive?
They make a neutral safety switch that also allows you to start in park
I have found cars that have bypassed the neutral safety switch
Good luck with your dilemma
Keep us posted
 
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