o2 Sensor Questions
 

A co-worker of mine has an Expedition with the 4.6L. He is concerned that he needs to check the condition of the o2 sensor and any related parts. What parts should be checked/replaced/cleaned, and where are the located on the vehicle. Any and all responses will be appreciated.

Please respond to Tim Hampton at thampton@timeparksystems.com

Thanks in advance....

Mike
'89 Mustang LX 5.0L Coupe