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Slips From Park to Reverse |
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bigcalhoun 
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Joined: 19-June-2022 Location: South Carolina Status: Offline Points: 2 |
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 Topic: Slips From Park to ReversePosted: 19-June-2022 at 2:14AM |
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Gents,
I recently inherited my father's '68 Torino. It was the first new car he ever owned and the car that brought me home from the hospital when I was born. It's entirely original, has been garaged kept and well maintained its entire life until my dad got where the couldn't work on it much any more. When you crank it the automatic transmission column shift lever is slipping from P to R so I crank it in N. Similarly, if you are in P and the vehicle is running, it will jump to R if you rev it at all. My first thought is the point of the shift lever inside the column is worn but I would welcome advice or good ideas on that. I've done some initial looking around for a new shift lever and '68 Torino ones aren't easy to find. If anyone is aware of one from another model I should look for that would be helpful too. I'm sure it's appropriate I'm posting this on Father's Day. Working on that car helps me feel closer to my father. |
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Ali
'68 Torino, 302 '70 F-100, 302 Mt. Pleasant, SC |
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Eliteman76
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Joined: 20-March-2006 Location: Nebraska, USA Status: Offline Points: 4765 |
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Posted: 22-June-2022 at 12:27PM |
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Parking pawl is worn out. For decades, Ford had warnings to *ALWAYS* set the parking brake on any automatics. Not uncommon on older cars for it to just pop into reverse with little to no warning.
The issue is it's internal to the transmission. Not to say after 50+ years you do not have slop in the linkage off the column, but odds are, it's the parking pawl in the transmission itself. The guy doing the video is a Ford Master Tech that runs a shop. Very good guy to watch on youtube. https://youtu.be/eh988eSAPc8 |
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 Andrew: Long time Torino guy and GTS.ORG admin
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Steve M.
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Joined: 08-June-2019 Location: Florida Status: Offline Points: 1290 |
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Posted: 22-June-2022 at 1:21PM |
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Definitely address that issue. It almost cost me a car.
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Steve M.
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bigcalhoun
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Joined: 19-June-2022 Location: South Carolina Status: Offline Points: 2 |
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Posted: 22-June-2022 at 11:47PM |
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Much appreciated. I’ll check it out. Definitely need to resolve this issue.
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Ali
'68 Torino, 302 '70 F-100, 302 Mt. Pleasant, SC |
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green 72
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Joined: 27-April-2010 Location: Manchester,Iowa Status: Offline Points: 43 |
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Posted: 23-June-2022 at 4:41AM |
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also check motor mounts and transmission mount. They can shift around when when reving the motor causing the linkage to pull out of park
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Dan 1972 GTS Formal
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72 RS 351
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Joined: 04-September-2014 Location: Knoxville TN Status: Offline Points: 1991 |
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Posted: 23-June-2022 at 6:14AM |
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This is all interesting, I didn't know the park issue was common at all. I'll have to pay close attention to the shift linkage and parking pawl, plus the floor shift assembly in my projects.
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Don
73 Ranchero Sport "72 front end", floor shift/console, planning EFI 7000rpm 351-4V &4R70W 73 Ranchero GT 351C-4V 3.70 gears for sale later. 92 Lincoln Mark VII SE, OBDII 347/4R70W |
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californiajohnny
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Joined: 05-October-2013 Location: winlock, wa Status: Offline Points: 14175 |
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Posted: 23-June-2022 at 6:18PM |
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iirc it seemed to be mostly c-4's that did that, usually wear and the linkage out of adjustment will keep it from fully locking into park but yes if it has wear internally that would add to the situation too!!!
if you feel any extra amount of play i'd check each bushing on the whole linkage system and replace any that are worn! also disconnect the linkage and click the arm in each detent position in the tranny too |
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JOHN
74 GRAN TORINO S&H CLONE 74 VETTE CUSTOM 90 S10 BLAZER 4X4 LIFTED 77 CELICA CUSTOM 75 V8 MONZA SUPERCHARGED 79 COURIER VERT. SLAMMED 75 VEGA V6 5 SPD 70 CHEV C10 P/U 68 MUSTANG FB CONVERSION |
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Wayner315
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Joined: 19-October-2021 Location: Alberta Status: Offline Points: 86 |
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Posted: 24-June-2022 at 2:48AM |
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Mine had a hard time going into park, had to rock the shifter a couple times from R to P. Like Johnny said, if you make sure the shifter on the tranny clicks into park easily and there's no visible wear in the tranny internal linkage or pawl then issue can be in the shifter bushing/seal or linkage up to the column.
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72 Gran Torino formal roof Brougham
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handsofstone
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Posted: 24-June-2022 at 3:14AM |
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Even on the bench, manually shifting to park you will feel the spring loading up as the rod is what actually activates the parking pawl. As soon as you slightly rotate the output shaft it audibly clicks into place. At that point there is still some spring pressure on the rod though very slight.
You feel it when you park and remove the key, lef off the brake and the car rolls an inch. That click is the pawl engaging and unloading the spring that allows the tapered "ball" to lock the pawl in place. The location of the pivot point for the pawl rod setup takes away a lot of the "feel" in your shifter due to linkage geometry. Worn bushings were very common and easy to replace. I have yet to find the boxes of bushings from my Aamco days but I found most of the o-rings.
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