02 Lincoln Navigator MAF Sensor
 

First, I apologize if this isn't the right spot for this post but I need help.

I recently replaced my mass airflow sensor and it seemed to be an easy enough job but... it's worse now than it was before.

1. Does anyone know where I can find a step by step guide to doing this task so that I can be sure that I didn't miss anything?

2. Is it possible that I got a bad part?

Thanks!