Auto trans shifter slipping
Thread Starter
|
Tuned
Joined: Apr 2009
Posts: 339
Likes: 0
Auto trans shifter slipping
I got this new 67 F250 Campers Special, long bed with a 352 V8 and auto trans. Not sure which trans, but I thinks its original. So, when I put it into park, it sometimes falls out and drops into reverse.....any ideas? If I hold the shifter in "P" for a second or two, it stays in park.
Oh, ya...whats the stock carb on this thing. Need to rebuild it. Thanks
Oh, ya...whats the stock carb on this thing. Need to rebuild it. Thanks
Senior User
Joined: Sep 2009
Posts: 198
Likes: 3
From: Burbank, CA
Mine does that too.....It's a '67 F100 with the 352 and the MX-HD transmission. It's dangerous to leave it running in Park. I tried adjusting the shift linkage, and that's not where the problem is. The detent mechanism must be down in the transmission. Does anyone know from experience what's worn out and how much trouble it is to repair? Hopefully it can be done from underneath by pulling the trans pan?
Looking through the factory manual, I can see that there's a stamped detent cam/lever inside the transmission housing, that goes on the inner end of the shaft with the shift lever. That's probably the part that's worn out. It's not clear how much of the valve body and parts you have to remove to be able to replace it. But you definitely have to get up in there.
Bill (Number Dummy), would that part still be available? It's called the Detent Lever, in the '67 manual, page 7-81, illustration D1512-C, Figure 53, Transmission Case Control Linkage.
You probably also have the MX-HD transmission. A quick way to tell is to look at the transmission pan. The C4 pan is fairly shallow, maybe 1 1/2" deep. The MX-HD pan is about 3" deep, with a big drain plug in the middle on the passenger side.
The stock carb is the Ford/Autolite 2 barrel. It's an easy carb to rebuild. Surprisingly, I found the kit in stock at a local Trak Auto for about $12.
Looking through the factory manual, I can see that there's a stamped detent cam/lever inside the transmission housing, that goes on the inner end of the shaft with the shift lever. That's probably the part that's worn out. It's not clear how much of the valve body and parts you have to remove to be able to replace it. But you definitely have to get up in there.
Bill (Number Dummy), would that part still be available? It's called the Detent Lever, in the '67 manual, page 7-81, illustration D1512-C, Figure 53, Transmission Case Control Linkage.
You probably also have the MX-HD transmission. A quick way to tell is to look at the transmission pan. The C4 pan is fairly shallow, maybe 1 1/2" deep. The MX-HD pan is about 3" deep, with a big drain plug in the middle on the passenger side.
The stock carb is the Ford/Autolite 2 barrel. It's an easy carb to rebuild. Surprisingly, I found the kit in stock at a local Trak Auto for about $12.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 784
From: Simi Valley, CA
Slipping from Park into Reverse: The detent is at fault. The individual gate between Park & Reverse has snapped off.
The detent is bolted to the bottom of the steering column upper flange. The shift lever has a tab on it that fits in between the individual gates of the detent.
xstrange: See your other thread for the reason why the detent fails, its part number and sources that have some.
The detent is bolted to the bottom of the steering column upper flange. The shift lever has a tab on it that fits in between the individual gates of the detent.
xstrange: See your other thread for the reason why the detent fails, its part number and sources that have some.
