bad vibrations
Thread Starter
|
Senior User
Joined: Jul 2011
Posts: 173
Likes: 1
From: forks
bad vibrations
my 81 f100 just started a new trick that I don't like.i put it 4th gear it and it bucks and viberates i checked the universals and they are good the only thing I have found is some slop in the yoke on the rear end.... 1st thru 3rd are normal
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
It is possible that you have an ignition problem. High load at low RPM puts max stress on the ignition components, so if something is failing, like plugs, plug wires, rotor, or dizzy cap that's when it would do it.
Thread Starter
|
Senior User
Joined: Jul 2011
Posts: 173
Likes: 1
From: forks
Trending Topics
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 38
From: EXTREME southwest CT
I'm going to assume T-18.
That gearbox is 1:1 in top.
I don't think there should be a reason for it to cause this.
Are you lugging the engine in 4th gear?
That gearbox is 1:1 in top.
I don't think there should be a reason for it to cause this.
Are you lugging the engine in 4th gear?
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
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
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Thread
Thread Starter
Forum
Replies
Last Post
gatorman55
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
8
Mar 7, 2016 04:43 PM
Ricky St. John
Clutch, Transmission, Differential, Axle & Transfer Case
4
May 18, 2004 05:00 PM