Identifying Common Volvo XC90 Strut Mount Bushing Problems
The strut mount bushings of the Volvo XC90 SUV are designed to reduce the shock and vibration that the struts receive from the road, so it shouldn't be much of a surprise that the strut mount bushing will also start to wear out from these stresses. Strut mount bushings are typically replaced along with the struts once after every 50,000 to 70,000 miles, but once they already start to show signs of wear they must be inspected and replaced if necessary at the earliest possible time. The following are some of the common tell-tale symptoms of eventual Volvo XC90 strut mount bushing failure and how to troubleshoot them.
Too much noise and vibration
One of the first and most common symptoms of strut mount bushing failure is excessive noise and vibration from the struts. Since the bushings help minimize vibration, the vehicle would start to vibrate louder and more frequently than normal. Volvo XC90 owners whose strut mount bushings have failed have reported hearing popping noises from the strut and abnormal vibrations that last even when the engine is switched off. In addition, vehicles with bad strut mount bushings tend to rattle when going even minor bumps, particularly when the tires and suspension are still cold.
If one of the tires blows out when driving, one of its probable causes might be a worn or damaged strut mount bushing. Once you've replaced the blown tire, lift your vehicle off the ground and check the strut mounts. Once the bumps fail and the wheels go over a bump in the road, the vehicle would actually separate from the suspension. The wheel would then rest itself at an angle either out or in depending on the terrain. This in turn would lead to an excessive positive camber that damages the tire and eventually causing it to blow out.
Worn or damaged strut mount bushings have also been known the cause the condition called memory stir, wherein the steering wheel is turned and once released, it does not return back to the center. This is highly dangerous as you will have to manually return the steering to the center, which could inadvertently steer the vehicle and cause a collision.