Broken doors inside the intake manifold, that vary the length of the manifold, can cause an abnormal engine noise.
Average mileage: 114,496 (70,000–160,000)
Engine affected: 2.5L V6
17 people reported this problem
same problem VIS linkage disconnected from doors inside manifold.Tried to open plenum with heat gun without success so I cut it with a sawzall,reconnected the linkage,epoxied everything back together and viola!no more noise.Kinda Mickey Mouse but beats paying the $1300 for a new one