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Discussion Starter #1
I know there are a ton of messages on this, but none seem to be addressing my specific problem. I hear rattling our of the right rear which I think may be an endlink. But I also get vibration out of the right rear. This vibration has been present for a long time - it is not tire/wheel related - and starts at about 65/70 MPH. I have had the car 4 wheel aligned more than once over time and have even mentioned the vibration and noise, but no one thinks there is anything wrong with it. I'm going to check more into it tonight. Does anyone have any other ideas?

Thanks,
Randy
 

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Trumpeter Extraordinaire
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Do you hear a clunk when shifting into reverse? How about when you're going 65-70, then coast down to 60 (foot off gas pedal), then accellerate again? How are the U-joints? Those can be a source of clunking and vibration.

When this happened to me a few months ago, the vibration I detected on my car sounded as if it was in the right rear of the car. New U-joints solved the vibration/clunk problem.
 

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take a peek at your sway bar endlink bushings, if they are blown out just replace them all instead of doing them one at a time.

On my 95, the stock bushings were totally blown out and clanking at like 50k miles.

As for the bad vibes, the mn12 cars are very sensitive to vibes, I am chasing down one myself, grr.

Could be a million things, off the top of my head, just do a search but here is the basic rundown.

Improper Wheel lug torque.

Align the valve stem with the painted lug when installing wheels.

It could even be brake rotor runout. My 95 did this, I put new rotors on the front of it and the vibration went away like magic.

Or hub runout....

As for the clunk, I would look at the IRS bushing near the rear end before I got into U joints.

I would think that your IRS bushings are about done also and that is causing the clunk.

I wouldn't put new u joints on that trash stock driveshaft, if you end up doing ujoints, then get a custom one piece highspeed balanced driveshaft made up with some spicer ujoints and call it a day. The stock driveshaft is a two piece unit and it has been the source of alot of bad vibes also.
 

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Discussion Starter #4
I got under the car and found the IRS bushings were TRASH! I ordered a new set yesterday, along with transmission mounts However, I do have clunking - If I let off the gas a few seconds then put my foot back into it - it clunks. If I ease into the pedal, it doesn't clunk. Also, there is some clunking when putting the car in reverse. I checked the end link bushings and they were good. I know for a fact the rear end and CV joints are tight. I checked that when looking at the IRS bushings. Also, the vibration is coming from the right rear.
Thanks for all the help guys!
 

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The Band, not the Disease!
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U-Joints. Dont worry they are CHEAP!!!





































Putting them in requires work underneath the car, messing with the rear differential and the gas tank... I need mine done BAD and I keep putting it off =/
 

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where can you get the u joint? my car does the same thing it vibrates a lot especially after 65. when i go over a bump slowly i hear a pop in the back.
 

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I'd suggest having your fingers do the walking (yellow pages), call a few shops, and ask for Dana Spicer U-joints. I found some in my area at a place that works on joints, clutches, gears, driveshafts, etc., for large trucks. If I recall correctly, you'll want a #1350 U-joint.

Otherwise, you can get other brand U-joints at the usual retail places, such as Advance Auto Parts, Carquest, AutoZone, NAPA, etc.
 

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Discussion Starter #10
OK....so this is getting personal.
Here's a list of what I've done in the past few weeks.

New Tires
4 Wheel Alignment
New brakes and rotors - all 4 wheels.
New shocks
New upper A-arms
New rear sway bar end-links
New transmission mount
New IRS bushings
New U-joints and driveshaft balance

I no longer have the clunking noises, but I still have a vibration from about 65 up. I can't figure out what this is. It still feels like its the right rear. I figure I'll try another wheel/tire on the right rear, but I'd think the tire shop would have known if the wheel was slightly bent. Does anyone have any suggestions?
 

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Discussion Starter #11
I have another question about this too. Is there supposed to be a rubber dampener between the pinion flange and the driveshaft. I read about these on the internet, but my car doesn't have one - It's just metal to metal between the flange and driveshaft.

Thanks for the help everyone!
 

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does anyone have a pic of the u-joint, its about time that i need to change mine and see if the vibration stops
 

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Be sure to check out your strut rod bushings...I had a very reputable mechanic look at my front end to see if anything needed to be replaced. Well, I thought the strut rod bushings looked pretty trashed, but he said they should be fine. Well, as I was looking at the reflection of my car backing up one day, I discovered that, while backing up and applying the brakes, my front left wheel would move forward ever so slightly, as if the entire suspension assembly were moving.

That's exactly what it was doing. :eek:

I have a blown strut rod to spindle bushing that needs to be replaced BADLY. I also have a vibration that starts around 80 m.p.h. and can be felt through the steering wheel and somewhat in the seat of your pants. My car has been aligned and this problem was not apparent at the time. The alignment was done on a Hunter Engineering machine, if this makes any difference. These bushings are pretty cheap from RockAuto.com, but if they are replaced you will need to have another alignment. Make sure you check out your steering rack too, as those tend to have a good amount of wear and "looseness" over time and with use.

-DG-
 

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Yea I'm chasing a vib that starts in at 65 on my car. I've replaced EVERYTHING in the front end, even down to the high pressure PS lines, lol. I've tried a few sets of other rims and tires that I know don't vibrate (from a Sable). I still can't find it...............if you have any luck make sure you post it!!! I'm starting to think although I feel the vibration in the steering wheel it may be originating from somwhere else. I'm going to put the car up on jacks and run it up to 75 or so to make sue it's not driveline (do have a dynotech driveshaft). So damn annoying............:mad:
 

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Discussion Starter #16
Thanks for the tips guys. I know that my vibration is in the driveline. It changes every time I make the smallest change to something (like changing the position of the d/s on the pinion flange). I haven't had time to work on it, but soon I'm going to check the pinion angle with a protractor.
 
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