Help! Strange Rough Ride

[Tom G]

1992 Corvette rides fine but then will go into a ride as if it has a flat tire or a flat wheel. Often goes away if you stop and restart. Does not seem to have any pattern when it may happen, but if you go several miles it will usually happen. I replaced shocks and tires which did not help. Had one suggestion to replace steering rack and pinion. Any suggestions or help would be appreciatied

 

[Wegone]

Top on or off?

 

[dougelam]

First see if you can determine where it's loudest,
Front?
Rear?
Left?
Right?
If you believe it's from one corner more than another then push the brake pedal to see if it gets louder or changes.
If it changes with the brake pedal pushed then pull over to a safe spot, get out, being careful see if the there is more heat from that brake rotor than the others.

It sounds like a set of brake pads are sticking causing the rotor to heat up giving a noise that goes away when you stop, the brakes cool down.

One of many possibilities!

Sent from my SM-T530NU using Tapatalk

 

[Toms007]

First off, a welcome is in order here, Tom. As you have found already, we have many members here who are willing and able to help you in your quest to make your Corvette run like new. I trust one of them will have a good idea and suggestions as to why and how to fix it. You've already got a couple of the best asking questions to help diagnose the problem.

Me? I was going to say tires and shocks, but you've already been there. How about U-joints? Maybe the posi clutches are slipping? That usually happens when you go around corners though. Just throwing out some ideas. Good luck!

 

[Tom G]

Top on or off?

Top on

 

[Tom G]

There is no noise, just vibrating or riding like a flat tire.

 

[Wegone]

I would get it up on some jack stands or a lift if possible, check and shake everything you can. Sounds like an maybe a issue with a wheel bearing on u-joints possibly a bad rotor . Hope you find it keep us posted.

 

[Tom G]

Thanks,
I think I am going to take to a dealer and have them check it out. I took it for a ride yesterday and after about 15 miles on interstate it did it again. It starts as a small vibration and then increases till you need to stop.

I would get it up on some jack stands or a lift if possible, check and shake everything you can. Sounds like an maybe a issue with a wheel bearing on u-joints possibly a bad rotor . Hope you find it keep us posted.

 

[Robertwav1]

I once had a similiar problem but it was more at high speed. One of the rotors on the front of the car were cut wrong. This was done at a dealership, the last time I ever took the car there. I took the rotors off the car and took it to an auto store at the time that did rotors for about $7 each. They told me they didn't use the right spacer as the vette's hub is wider then most....at least at the time, the car was only a year old or so. Anyway, it drove me crazy for a while as everything else checked out. It only showed on the machine as it was spinning, there was no way to tell by looking at the rotor? Hope u find the problem!

 

[Tom G]

Thanks. I have an appointment to take to dealer. I will forward your info to them.

I once had a similiar problem but it was more at high speed. One of the rotors on the front of the car were cut wrong. This was done at a dealership, the last time I ever took the car there. I took the rotors off the car and took it to an auto store at the time that did rotors for about $7 each. They told me they didn't use the right spacer as the vette's hub is wider then most....at least at the time, the car was only a year old or so. Anyway, it drove me crazy for a while as everything else checked out. It only showed on the machine as it was spinning, there was no way to tell by looking at the rotor? Hope u find the problem!