Infiniti QX80 Variable Valve Timing Control Solenoid Replacement Cost

Know what price you should pay to get your vehicle fixed.

Variable Valve Timing Control Solenoid Replacement
The average cost for an Infiniti QX80 variable valve timing control solenoid replacement is between $768 and $833. Labor costs are estimated between $167 and $211 while parts are priced between $601 and $622. Estimate does not include taxes and fees.
Note about price: The cost of this service or repair can vary by location, your vehicle's make and model, and even your engine type. Related repairs may also be needed. Talk with a RepairPal Certified shop to learn which repairs might be right for you.

How does the variable valve timing solenoid work?

The variable valve timing control solenoid is electrically controlled by the power management computer or the electronic control unit. When condition are met, the computer will actuate the solenoid, and valve timing will be retarded or advanced. Many solenoids accomplish this by directing and limiting oil pressure to the solenoid.

What are the symptoms related to a bad variable valve timing solenoid?

The check engine light, and loss of power are the most typical symptoms of the variable valve timing control solenoid failure. There may be a leak around the solenoid, but this generally will not cause failure. When the solenoid fails, the driver feels a loss of power because the timing is no longer advancing with engine speed. The less fortunate form of failure is from the solenoid advancing at all times. This will lead the engine speed rising and falling at idle, vibrations at idle, and possible misfires at idle. In any case of a failed variable valve timing solenoid, there will be poor fuel mileage until the issue is corrected, because the engine can no longer adjust for maximum economy while cruising.

Can I drive with a variable valve timing solenoid problem?

As most vehicles before variable valve timing, the vehicle may be driven without repairing the variable valve timing control solenoid. The engine performance symptoms noted will be present until the repair is completed, but the engine should not suffer failure due to loss of variable valve timing. If the variable valve timing control solenoid has failed, and causes the timing to remain advanced, the vehicle may have difficulty starting, or not start at all. In these cases, the solenoid should be replaced before the vehicle is operated.

How often do variable valve timing solenoids need to be replaced?

Variable valve timing components fail randomly. There is no great way to recommend when they fail, because replacement occurs for nearly all variable valve timing solenoids across a wide range of mileages. The solenoids are not designed to fail, they typically fail because of dirty oil, or oil that has broken down, and is not as thick as it once was. Regular maintenance according to the manufacturer specification for driving conditions will help ensure the variable valve timing control solenoid is preserved.