Shaking at speed.

Topic: Shaking at speed. (Read 1456 times) previous topic - next topic

Shaking at speed.

January 25, 2009, 11:24:37 PM

The car shudders at higher speeds, but is not relative to speed itself. It will shake like crazy sometimes, but fine a little while later. It's not due to road conditions, either. It will still rattle on almost all road surfaces. The tires are in good shape, all properly inflated and plenty of tread left. I'm going to get them balanced sometime this weeks to see if that helps. It doesn't cost that much and they need to be rotated anyway. It is a little worse on deceleration while going down hills (brake is not being pressed). I'm just kind of searching for ideas and some items to inspect.

Shaking at speed.

Reply #1 – January 25, 2009, 11:28:11 PM

does it do it on really cold days only?

Shaking at speed.

Reply #2 – January 25, 2009, 11:33:35 PM

I couldn't really tell you for sure, It's been really cold for awhile, lol. I don't think it's relative to temperature though. Possibly unrelated, but there is some squeaking going on near the driver's side suspension over bumps, etc.

Shaking at speed.

Reply #3 – February 07, 2009, 12:31:14 PM

Is the stering wheel vibrating or the whole car? If it's the whole car shaking at highway speeds it could be:

wheels out of balance, or,
drive shaft out of balance
bad u-joints
ball joints are bad (could be your squeak).

Shaking at speed.

Reply #4 – February 07, 2009, 12:52:09 PM

If the squeaking noise sounds like a rusty old bed, it's most likely your ball joints which could cause the vibration you are experiencing.

Shaking at speed.

Reply #5 – February 07, 2009, 01:39:24 PM

If the shutter changes wit acceleration/deceleration problem nay well be U-joints or worn bearing/slip yoke in rear of tranny...

Shaking at speed.

Reply #6 – February 07, 2009, 07:52:43 PM

I'd check the driveshaft u-joints and make sure all the bolts are in the driveshaft/rear end connection.

Shaking at speed.

Reply #7 – February 07, 2009, 08:52:45 PM

Quote from: TurboCoupe50;255766

If the shutter changes wit acceleration/deceleration problem nay well be U-joints or worn bearing/slip yoke in rear of tranny...

This almost exactly fits. It gets worse when slowing down and accelerating. I also know the passenger side ball joint was replaced before I bought it so maybe the driver's side needs to be done as well. Thanks for the input, I'll check those things out.

Shaking at speed.

Reply #8 – February 08, 2009, 01:21:06 AM

if it's a ujoint gone bad you're on borrowed time. once the joint starts seizing the whole drivetrain goes nuts and gets undrivable. it could even happen the next time you go to the grocery store.

Shaking at speed.

Reply #9 – February 08, 2009, 10:16:09 AM

Quote from: ~AC;255868

if it's a ujoint gone bad you're on borrowed time. once the joint starts seizing the whole drivetrain goes nuts and gets undrivable. it could even happen the next time you go to the grocery store.

Good to know, I'll be tackling the job today. Parts are around 20 bucks, and the car does have nearly 200K on the clock. Might as well replace them, right?

Shaking at speed.

Reply #10 – February 08, 2009, 04:01:24 PM

If there bad, It could be a different issue. If its all stock,
Then you need to look for a stock problem.

Shaking at speed.

Reply #11 – February 08, 2009, 10:34:56 PM

Got the tires balanced and the U-joints done today. The joints weren't all that bad but I replaced them anyway since the driveshaft was already off and already bought them. Shuddering has improved significantly, but it's still there to some extent. I may check into the seal on the transmission next. At this rate, I'll have a new drivetrain just in time for the cancerous rust to consume the rest of the body :D.

Shaking at speed.

Reply #12 – February 08, 2009, 11:54:37 PM

I have that problem.It starts at 75 mph.A steady vibration.I'm swapping u-joints,lower a-frames (I got a set from Chuck with nice bushings,mine are 22 years old).I'm also swapping the seals and bearings on the differential and the strut mounts.

Shaking at speed.

Reply #13 – February 09, 2009, 09:01:11 AM

Do you happen to have a weight on the driveshaft?

Shaking at speed.

Reply #14 – February 09, 2009, 06:02:14 PM

Quote from: EricCoolCats;256037

Do you happen to have a weight on the driveshaft?

There are 3 weights spot welded to the driveshaft. I made sure to reinstall the shaft in the same orientation that i removed it. Are you thinking it may be out of balance?