Cam Position Actuator problem - 1999 Volvo S80
Hello I believe you are referring to the variable valve timing or camshaft position actuator/solenoid (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-variable-valve-timing-vvt-solenoid), which varies the camshaft timing relative to the crankshaft position. This feature enhances engine performance, mileage, and lowers emissions. If you are able to...