hi, my alternator died a couple of weeks ago, i change it and everything works fine, except that the check charging system warning is now on. i bring my truck to the garage and the guy told me that i would have to change a sensor. does anybody what sensor is he talking about and is it hard to do it by myself. my truck is a 2004 exoplorer limited 4.6L. thank you!

 

explorer not exoplorer... sorry....

 

Why not get a second opinion?