2001 Infiniti QX4

Answer 1

I had the same problem with my 2001 Infiniti QX4. I believe it was an oxygen sensor. Can't recall if the check engine light came on. After researching on line this seemed to be a common problem on the 2001. I took it to the dealer and it cost around $500 for labor and parts, however, it did make a change the way the engine ran. I had approximately 72,000 miles on my car at the time. I know it sounds expensive but it could prevent major damage to the engine later. Thanks