Tranny?
Thread Starter
|
Senior User
Joined: Nov 2007
Posts: 105
Likes: 0
Tranny?
I have a 1977 F150 400M C-6. Its a 4x4. it does just fine at 40 or 45 MPH. When I get it up to 55 or 60 MPH and the tranny has high oil pressure it starts powering out like it ran out of fuel. When I got the truck form a cousin the tranny had problems. I think it is the torque converter but i'm not sure. Any suggestions. I replaced the fuel pump about 3 months ago and replaced filters three times since.
New User
Joined: Sep 2008
Posts: 7
Likes: 0
the torque converter is a fluid coupler, it reaches vortex about 1800 rpm, which makes it direct drive[to a percentage] after that. it does not recognize rpm after this. have you seen a problem with the fuel filters when you changed them.
Junior User
Joined: Oct 2008
Posts: 86
Likes: 0
From: Southern Illinois
Start with simple stuff first check the air filter make sure its clean or $8 for a new one, spark plugs and wires, timing, vaccum advance. Check and see if it has a screen inside the carb where your fuel inlet hose barb threads in it may be varnished over and starving it at speed.
Super Moderator
Joined: Apr 2004
Posts: 34,512
Likes: 2,824
I have a 1977 F150 400M C-6. Its a 4x4. it does just fine at 40 or 45 MPH. When I get it up to 55 or 60 MPH and the tranny has high oil pressure it starts powering out like it ran out of fuel. When I got the truck form a cousin the tranny had problems. I think it is the torque converter but i'm not sure. Any suggestions. I replaced the fuel pump about 3 months ago and replaced filters three times since.
Silly question: Do you have two shifts? Worn linkage will result in the shifter reading D when it's in 2, which results in a doggy start and topping out at 55 or so.... Just a WAG.
Good luck if that ain't it.
Thread
Thread Starter
Forum
Replies
Last Post
bentcipher
1999 - 2016 Super Duty
25
Oct 23, 2010 10:29 PM
ripcurl94
Explorer, Sport Trac, Mountaineer & Aviator
2
Aug 23, 2006 07:13 AM
