1993 Buick Park Ave Ultra Supercharged Vibration

[geraldfrank]

Have vibration starting at 45mph, gets worse as speed increases. Alignment done, new Cooper tires balanced, rear toe link ends replaced, replaced left rear wheel bearing, replaced both rear lower ball joints, replaced both front lower ball joints, replaced both front wheel bearings. There is some play in front tie rods. Engine has no vibration, all mounts are good.

Vibration continues. Help please.

 

[HotZ28]

Is the vibration mostly felt in the steering wheel, or in the seats?

 

[geraldfrank]

Is the vibration mostly felt in the steering wheel, or in the seats?

Both

 

[geraldfrank]

Is the vibration mostly felt in the steering wheel, or in the seats?

I would say mostly in the seats, body is vibrating. Going to replace inner & outter tie rods next. This is making me crazy.

 

[geraldfrank]

Is the vibration mostly felt in the steering wheel, or in the seats?

Also took all 4 wheels & tires off my 92 BPA which has zero vibration and put them on the 93, same vibration remains on the 93.

 

[HotZ28]

You did not answer my question on where the vibration is transmitted to, the steering wheel, or the seats? A lot of possibilities, other than tires/wheels.

 

[geraldfrank]

A little vibration at steering wheel, but more to seats & body.

 

[HotZ28]

Have the CV shafts ever been replaced?

 

[geraldfrank]

Have the CV shafts ever been replaced?

No, originals still in, car has about 100k km, about 70-80 k miles on it. I do have a brand new pair of CV Shafts. Is there much likelihood of them being bad? Have had the same vibration problem with a 96, couldnt find it so scrapped the car. Just ordered inner & outter tie rods, am going to install these this weekend.
CV shafts will be next if the tie rods don't get rid of the vibration.

 

[ulycyc]

Bad tie rod ends usually give you the old-term “ death wobble” mostly during deceleration. Your issue sound like cv-axles. I had a 93 PAU and replaced them around 150Kand same with my 2001 PAU both cured minor vibration and dried out cv-joints

 

[geraldfrank]

Thanks, have been thinking it is the CV axles too. Changing tie rod ends next then the axles.

 

[Nevadaultra]

Thanks, have been thinking it is the CV axles too. Changing tie rod ends next then the axles.

Any updates on your issue?

 

[geraldfrank]

Installed new cv axles, vibration still present

 

[geraldfrank]

Any updates on your issue?

Thanks for your help. Put two new cv axles in. Still vibration.

Started looking at the tires, were new Coopers. Got them exchanged for Kelly AS, 225-60R-16. 100% round, zero sidewall variation.

Tested today at 130 km/hr zero vibration. It was the sh*t Chinese tires.

Thanks for your ideas.

On another subject, do you know a source for the lower belt tensioner on the S/C engine?

 

[HotZ28]

I always thought Cooper tires were made in the USA? What happened, did Cooper start outsourcing overseas & did you see an imprint on the tire, or label of the manufacturing country? If that is that true, Cooper is in bad shape!

 

[HotZ28]

On another subject, do you know a source for the lower belt tensioner on the S/C engine?

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[HotZ28]

What year is the car you are looking for a belt tensioner?

 

[geraldfrank]

Currently the 93 BPA ULTRA, but the tensioners were the same from 91-95.

 

[geraldfrank]

I always thought Cooper tires were made in the USA? What happened, did Cooper start outsourcing overseas & did you see an imprint on the tire, or label of the manufacturing country? If that is that true, Cooper is in bad shape!

Made in CHINA is molded into the outside of Cooper tire.

 

[BuickGirlFromMars]

I always thought Cooper tires were made in the USA? What happened, did Cooper start outsourcing overseas & did you see an imprint on the tire, or label of the manufacturing country? If that is that true, Cooper is in bad shape!

goodyear bought cooper 2 years ago