Vibrations @ 50+
 

In my 91 blazer fullsize when i get to 50-55 any speed above there when i let off the gas i get vibration that seem to be right between the front seats i was thinking it may have been my u joint on the front of my driveshaft since the rear joint is brand new. I was wondering if it could be anything else. Friends have been saying my it could be my driveshaft is tweaked???

any kinda of suggestions would help

RE: Vibrations @ 50+
 

bump

RE: Vibrations @ 50+
 

Please have patience. It sometimes takes awhile for folks to get around to a question. You had a post a couple of weeks ago about breaking a yolk strap and dropping the driveshaft, right? If the shaft hit the road while you were moving, yeah that could damage the shaft and cause a vibration. I would check the u-joints for wear (if they're old, just replace them anyway) and inspect the driveshaft for damage.

bump again

I have the same problem with my 88 BLazer, but I had just added a 4 inch lift. Was told it was the U joints but I haven't had it fixed yet. Let me know if you have fixed your problem or not. Hopefully it is just a U joint or two.

id guess u joints too. maybe a bad crossmember mount or a bent driveshaft may cause this

if your drive shaft hit the ground theres your problem its proably bent. hit the junk yard and get a new one and replace your u-joints. its not that hard or expensive

Just changed out my U-joints and that seemed to fix my problem.

I had this problem in my '91 K1500 Blazer. I replaced both U joints and it fixed the problem for about a month, then the problem returned. So I'm back to square one.

How often you go mudding? It could just mud in your wheels.