VIBRATION WHILE ACCELERATING AT 45-50...

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Author Message   RAYMOND SANTOS (Mokie) Member Username: Mokie Post Number: 46 Registered: 09-2003 Posted on Thursday, January 15, 2004 - 02:49 pm:    I just finished rebalancing and rotating my tires (as one had suggested) to make the vibration disappear. Well, my tires are now rebalanced and the vehicle continues to vibrate between speeds of 45-51 mph while accelerating. It then disappears when the engine kicks in on 4th at 52mph. The vibration will appear again while accelerating over 70 mph. Another weird thing. If you accelerate slowly, there are times you will not hear the vibration. When the gas pedal is pushed abruptly, that's when the vibration is felt the most. Any ideas??? Thanks.   Will Tillery (Will) Senior Member Username: Will Post Number: 293 Registered: 11-2002 Posted on Thursday, January 15, 2004 - 03:06 pm:    If its your 95 or 94 you need to replace the rotoflex.   RAYMOND SANTOS (Mokie) Member Username: Mokie Post Number: 49 Registered: 09-2003 Posted on Thursday, January 15, 2004 - 04:33 pm:    It's a 96. If it's the cause, how much do you think the damage would cost?   Peter J Blatt (Peteb) Senior Member Username: Peteb Post Number: 313 Registered: 10-2002 Posted on Thursday, January 15, 2004 - 07:43 pm:    You have to try this test, If the vibes happen at a certian speed, 45 to 50 for example, but never any other speed, the vibe is withen the rotational items that are speed related, tires,drive shafts,wheels, If the vibe is associated with a rpm range, 3-3500 rpm, it is now associateg with the transmission,engine, pullies, harmonic balancer(if disco's have them), Hope this makes sense! Peter.   Will Tillery (Will) Senior Member Username: Will Post Number: 297 Registered: 11-2002 Posted on Thursday, January 15, 2004 - 08:51 pm:    Well actually sorry 96 had the roto as well. We have a complete conversion kit. Rear Drive Shaft and the flange kit for 250.00 shipped. Never replace it again. With the rotoflex you never can tell. If your truck is raised then I would go with the conversion kit.   Shawn McKenzie (Shawn) Member Username: Shawn Post Number: 180 Registered: 10-2002 Posted on Thursday, January 15, 2004 - 09:57 pm:    Changed my '96 to universal joint from rotoflex. ~4" lifted. All vibrations gone up to as fast as I'll ever go. (knock on wood this remains) Great mod.   RAYMOND SANTOS (Mokie) Member Username: Mokie Post Number: 51 Registered: 09-2003 Posted on Friday, January 16, 2004 - 06:30 pm:    thank you everybody. i will check the areas you have mentioned.