Main IndexAuto Repair Home Search Posts SEARCH
POSTS
Who's Online WHO'S
ONLINE
Log in LOG
IN









Search Auto Parts

94 GMC truck vibration


  Email This Post



dbanks12
User

Jul 13, 2010, 3:30 PM

Post #1 of 7 (2003 views)
94 GMC truck vibration Sign In

I have a 94 GMC 1500, just changed the 3 sets of original u-joints on it. Took it for a test run and now I have a vibration between 40 and 60 Kmh then it disappears. I didn't change the steady bearing as it was still tight and made sure the slip joint was in the spline right. The balance weights are still there on the front drive shaft but the vibration is a concern. Any help would be great. First time this has ever happened doing u-joints..


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jul 13, 2010, 3:32 PM

Post #2 of 7 (2001 views)
Re: 94 GMC truck vibration Sign In

Are you sure you didn't knock down one of the needle bearings so it's stuck under the end of the cap? Did you have to really fight with any of them to get it all the way together?



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



dbanks12
User

Jul 13, 2010, 3:42 PM

Post #3 of 7 (1995 views)
Re: 94 GMC truck vibration Sign In

No fight getting the new ones in, I took sandpaper and cleaned them all out first, checked all the u-joints were moving freely before I installed the drive shafts and then the vibration, just doesn't make any sense. Will put it up on stands tomorrow and run it to see if I can tell where it's coming from, front or back. maybe I can see it not sure..


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jul 13, 2010, 3:49 PM

Post #4 of 7 (1992 views)
Re: 94 GMC truck vibration Sign In

Did you hit against or clamp the shaft in a vise when you did this?



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



dbanks12
User

Jul 13, 2010, 4:00 PM

Post #5 of 7 (1986 views)
Re: 94 GMC truck vibration Sign In

Nope hung the end of the drive shafts over a 2 x 4 and punched them out. New ones went in easy with a little tapping and a socket the same size.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jul 13, 2010, 4:04 PM

Post #6 of 7 (1983 views)
Re: 94 GMC truck vibration Sign In

I have to believe this is a tire vibration for some reason. A driveline vibration usually won't go away at higher speeds but a tire will. I could tell by the pitch of the vibration if I drove it but unfortunately I can't do that. It sounds like you did everything right putting it together.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



dbanks12
User

Jul 13, 2010, 4:10 PM

Post #7 of 7 (1976 views)
Re: 94 GMC truck vibration Sign In

I'll look tomorrow after it stops raining. It seems to be coming from underneath though, doesn't seem to be coming from a tire. I'll advise after I get it up tomorrow and run it at speed, thanks for the help though, two heads are always better than one ...






  Email This Post
 
 


Feed Button




Search for (options) Privacy Sitemap