First and second but no Third gear??
Thread Starter
|
New User
Joined: Jul 2007
Posts: 8
Likes: 0
First and second but no Third gear??
Hey there,
I have a 1986 F150 with a 4.9 inline 6 with a 3 speed automatic transmission. The truck only has 160k on it.
Anyway the other day I took it out for my Sunday drive to the Home Depot (the temperature was about 30 degrees) and the truck would not shift out of first gear!! I stopped, manually put it into 1 then shifted it to the second gear, everything was fine, went to third and nothing happened...it stayed in 2nd!!! The strange thing is that when its in D it will not go past first gear, but will go to second when I change manually.
The first thing I did was check the fluid, it was fine, then I thought that it might be the cold - so I let it idle for about 10 mins - the engine temp was fine and it still did it....
Hopefully this does not mean I need a new transmission !
Please help - thanks
I have a 1986 F150 with a 4.9 inline 6 with a 3 speed automatic transmission. The truck only has 160k on it.
Anyway the other day I took it out for my Sunday drive to the Home Depot (the temperature was about 30 degrees) and the truck would not shift out of first gear!! I stopped, manually put it into 1 then shifted it to the second gear, everything was fine, went to third and nothing happened...it stayed in 2nd!!! The strange thing is that when its in D it will not go past first gear, but will go to second when I change manually.
The first thing I did was check the fluid, it was fine, then I thought that it might be the cold - so I let it idle for about 10 mins - the engine temp was fine and it still did it....
Hopefully this does not mean I need a new transmission !
Please help - thanks
Moderator
Joined: Jan 2001
Posts: 56,980
Likes: 2,735
From: Virginia
I had this happen to a GM transmission, and it was the little plastic gear that drives the governor was stripped. Do some research, and I will try to do the same, and see if the C6 has the same setup. The reason it's going into second is the valve body forces it into second when you put the lever in second. If you put the lever in second while sitting still, it will start out in second and stay in second.
Thread Starter
|
New User
Joined: Jul 2007
Posts: 8
Likes: 0
Exactly ... that's what happens when I would start off....it would start in second (very weird) I have done some research (and will do more as well) It took me about 1 hour to find out that the tranny is C6, some websites had it as C4....its hard to know who to trust - I like you guys here though!
Thanks - keep me posted please -
Thanks - keep me posted please -
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 784
From: Simi Valley, CA
Originally Posted by ottawa_dave
I have done some research (and will do more as well) It took me about 1 hour to find out that the tranny is C6, some websites had it as C4....its hard to know who to trust.
First C6 in an F Series truck = 1968
First F150 = 1975
First F150 300 I-6 with a C6 = 1977 / C4 also available.
From 1977 thru 1982, Both the C4 and C6 were available in F150's.
1983/86 F150, The C5 and C6 were available with the 300. The C5 is a modified C4.
1987/91 F150, The C6 or the AOD = Automatic Overdrive were available with the 300.
C6 transmission pan = 17 bolt holes.
Will you trust this? Above info sources: 1964/72 - 1973/79 - 1980/91 Ford Truck Parts Catalogs.
Last edited by NumberDummy; Dec 10, 2007 at 12:55 PM.
Moderator
Joined: Jan 2001
Posts: 56,980
Likes: 2,735
From: Virginia
I just looked at a blown up diagram of the c6, and the governor is hooked in with the output shaft. No plastic gear that I see, and it's not accessible from the outside like the GM.
Make sure the vacuum line going to the modulator on the passenger side of the tranny is ok, and other than that, I don't know what else to tell you.
Make sure the vacuum line going to the modulator on the passenger side of the tranny is ok, and other than that, I don't know what else to tell you.
Junior User
Joined: Nov 2007
Posts: 71
Likes: 0
From: Knoxville, TN
Yeah, I agree with franklin - check the vacuum hose (runs from a 'tee' on the upper firewall to the transmission). This hose likes to come loose every couple of thousand miles or so on my truck, and causes is not to shift out of first gear. I just plug it back up and it's good to go.
Trending Topics
Thread Starter
|
New User
Joined: Jul 2007
Posts: 8
Likes: 0
Cool - thanks guys I will check the vacuum hose out tomorrow after work!
I hope its easy to find....I'll let you know how I do!
Thanks again
I hope its easy to find....I'll let you know how I do!
Thanks again
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
1st Gear
Joined: Jan 2023
Posts: 1
Likes: 0
Great help!
I just worked on the carburetor/ distributor and the same thing happened to me. I searched for stuck in 2nd and this thread popped up. I took off the air filter again and found a loose vacuum line as described. Thanks guys!
Thread
Thread Starter
Forum
Replies
Last Post
entropyeng
1999 - 2003 7.3L Power Stroke Diesel
9
May 3, 2016 08:21 AM
Ford_Six
Clutch, Transmission, Differential, Axle & Transfer Case
5
Jul 2, 2012 12:35 AM
guindian28
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
5
Feb 17, 2011 12:55 AM
Danny D
1987 - 1996 F150 & Larger F-Series Trucks
8
Feb 21, 2008 09:53 PM
