Is VANOS expensive to fix?
Replacing rubber seals on a VANOS system is relatively simple and inexpensive, but if the unit itself is faulty, it can be costly in terms of parts and labour. SYMPTOMS OF A FAILING VANOS PISTON SEAL At 50,000 miles, all of the seals should be on their last legs, and you should schedule an appointment with your mechanic to replace them. If driven further without replacement, there will be noticeable changes in how your automobile drives.
What causes VANOS to fail?
Common Causes of VANOS System Failure Typically, VANOS system failure results from two problems: o-ring failure and solenoid clogging. The VANOS system utilizes pistons to manipulate the engine’s cams, and these pistons are sealed by rubber o-rings. However, the VANOS system uses advanced technological innovation, which makes it easily susceptible to failures. To protect your car’s engine, you need to be able to identify the signs that point to a failure in the VANOS system so you can plan a repair before more damage is done.