Toyota Corolla wobble at HWY speeds.?

Toyota Corolla wobble at HWY speeds.?
I have a one owner 1995 Toyota Corolla with 190,000 miles. The car is dealer maintained and we have followed the book to a "T". This car has not really aged a bit. Problem: At highway speeds (70mph) I started to notice the interior of my car had a wobbling type vibration. My satellite radio bracket on the dash shakes badly. I thought it was the bad pavement on the 101 near my house causing this. It only happens when I step on the gas, when at 65-75 mph. If I let off the gas and coast at these speeds, it goes away. The car is not shifting out of overdrive when I perform this test. There are no tire vibrations. Brand new tires, just balanced and rotated. There is no steering wheel shimmy during the wobble/vibration. It does not happen in city driving. It does not seem to be the engine. During city driving, if I place the car in Low, and try to replicate the wobble by pressing the gas, then coasting, I can't replicate.


Answers:

Chosen Answer
,ncents:  When you get up to higher speeds your coils have to fire more, if one is going out it can create and engine shake at high speeds. How are your CV joints and axles? do you have grease leaking or a popping sound when you turn the wheel too far one way? Check body bushings.
2006-09-15 16:47:47
Nohappy:  You could need to replace the spark plugs or wires. To me it sounds like the engine is misfiring. Usually when this happens the check engine light will come on or flash. It will start off doing it at the higher speeds and over time (anywhere from a couple of hours to a couple of weeks or longer) it will get worse. I would take it to a place that will diag the check engine light for free if the light is on. Hope this solves the problem or at least points you in the right direction.
2006-09-15 17:17:53
Nate:  I think it is your tires, you said you just got new tires and had them balanced. Did it do this before you got new tires. I have (multiple times) had to take my car back to the tire shop and have them re-balanced. They seem to rush through the balancing sometimes. That is were I would start.
2006-09-15 17:21:42
Axel R:  check CV joint
2006-09-17 21:27:57