Vibration!!
New User
Joined: Sep 2001
Posts: 13
Likes: 0
From: New Orleans
the sad storyon vibration, short version
I DO own an '82 F250, so don't get too upset that I am having the problem with my '79 Camaro.
I've changed EVERYTHING, forget that.
The working u joint angles are both 1.5 degrees. But they are both in an upward direction, not the typical front angle down, rear angle up like a pickup. I did install a posi chunk around the year this started (not real sure of dates) and the vibra software site mentions a possibility of excess backlash.
I checked with the local GM dealer about if they use Vibration-Software and got blank looks. (Typical New Orleans).
ANyone got any info on the effect of both angles going up, I thought that is wierd. The Muncie tranny (4speed) is not original, I blew up the Saginaw with the positraction same year, long time ago.
I've changed EVERYTHING, forget that.
The working u joint angles are both 1.5 degrees. But they are both in an upward direction, not the typical front angle down, rear angle up like a pickup. I did install a posi chunk around the year this started (not real sure of dates) and the vibra software site mentions a possibility of excess backlash.
I checked with the local GM dealer about if they use Vibration-Software and got blank looks. (Typical New Orleans).
ANyone got any info on the effect of both angles going up, I thought that is wierd. The Muncie tranny (4speed) is not original, I blew up the Saginaw with the positraction same year, long time ago.
Senior User
Joined: Jun 2004
Posts: 134
Likes: 0
From: Perkins, OK
I have a low frequency vibration on my 97 SRW CC 4WD, and just replaced all u-joints and carrier bearing trying to get rid of it. I can feel it between 45 and 55 mph during acceleration, but smooth as silk above or below those speeds. U-joints & carrier bearing didn't get rid of the vibration, so I'll be checking the phasing and alignment after reading this thread. Never would have thought of it otherwise. Good info! Thanks!
Freshman User
Joined: Jan 2005
Posts: 34
Likes: 0
From: Midwest, God's country
Confused
Originally Posted by t.j.g.
i had the same problem viberation at 70 the faster i went the louder it got
i had to drop my carrier bearing 1/4" and lift the transmission a 1/4 "
problem gone
the drive shaft angles were all messed up
oh and make sure drive shaft isnt out of balace
i had to drop my carrier bearing 1/4" and lift the transmission a 1/4 "
problem gone
the drive shaft angles were all messed up
oh and make sure drive shaft isnt out of balace
Fleet Mechanic
Joined: Nov 2004
Posts: 1,427
Likes: 10
From: Templeton, Massachussetts
are the rear brakes dragging???? this caused mine and most other OBS'S to hop @ cetain speeds and worse on the decel!
the e-brake needs a spring added @ the connector by the 3 cables and the actuators inside the drums get rusted up!
makes sure to turn the drums if this is found. try applying the e-brake while moving @ 20-30mph and see if it happens.
the e-brake needs a spring added @ the connector by the 3 cables and the actuators inside the drums get rusted up!
makes sure to turn the drums if this is found. try applying the e-brake while moving @ 20-30mph and see if it happens.
