this lets the vane turn within the housing, causing a short ratt NHTSA ID: 10127348 TSB ID: A18010F Servicenews article - does the engine rattle at startup for about 1 to 3 seconds? what?s happening is the lock pin inside the vtc actuator isn?t holding the actuator properly. NHTSA ID: 10130034 TSB ID: A18010F Servicenews article - does the engine rattle at startup for about 1 to 3 seconds? what?s happening is the lock pin inside the vtc actuator isn?t holding the actuator properly.