Why does your 93 civic Si steering wheel vibrate above 70 mph?
The vibration you're most likely experiencing is called "shimmy". It is a rotational vibration in the steering wheel due to an imbalance in your FRONT tire/wheel assembly (TWA - the combination of your tire and rim.) Centrifugal forces are created due to the imbalance, and these forces travel through the axle, the rack and pinion, then finally to the steering wheel.
Anyway, on to the important part: all you really have to do is re-balance your wheels. Whenever you change your tires (e.g. from all-seasons to winter and vice versa), the technician will (almost) always re-balance your wheels, so the problem should go away once the change of season comes. Alternatively, you can go ahead and just get a technician to re-balance your wheels at any time.
There's no need to rush to go and do it though. The consequences of not having properly-balanced TWA's is mainly the annoyances of shimmy at the 65-75 mph range. Above and below these speeds, the vibration should be fairly unnoticeable, and the wear due to shimmy is not significant enough to be much of a worry, as long as you eventually get it done.
Hope this helps!
Tim Chak, Engineer
Honda R&D Americas, Inc.
My 1992 Honda Civic has a horrible squeaky noise when i tirn the steering wheel and other front end squeaks as well The weather where I live is bitter cold that's when it starting squeaking?
Vibration of the tire is caused by a uniformity parameter called "variation of radial force". Usually a vehicle's steering wheel will vibrate (called torsional nimble) at a certain speed. This vibration is caused by the harmonics of this radial force. Picture the side view of a tire with different size springs within it. The force of these springs cause a distortion of this force and you feel this distortion in the steering wheel.
Could be a small thing like wheels out of balance 40+ "Noisy Inside Car" bad wheel bearings 30+ mph also decelerating harder to control "Steering wheel wobble "on accelerating / decelerating" "Noisy Inside Car" steering linkage: causes the steering wheel to wobble at 40+ mph decelerating harder to control "Steering wheel wobble "on accelerating / decelerating" My brothers car had the above problems I changed his rear spindle, outer, tie rods, "both were shot" bad…
Your steering wheel will vibrate at higher speeds due to either wear in your front tires or improper balance of tire pressure. IF these are not the promblem look to see if there is damanage to the shaft under the vehicle between the tires. Look at it or get it looked at before it gets worse, believe me I know how expensive it can be later!
To replace the wiper control switch in the 1996 Honda Civic, you must remove the steering wheel. With the wheel out of the way , remove the column covers and disconnect the electrical harness from the wiper switch. Remove respective screws and slide replacement switch into place. Replace respective screws, column cover and steering wheel.