greasemonkeync
New Member
- Joined
- November 6, 2012
- Messages
- 3
- Reaction score
- 0
- City, State
- western North Carolina
- Year, Model & Trim Level
- 1997 explorer xlt 4.0 4x4
HELP!!!!!!!!! I have a 1997 explorer 4.0L that i just bought. I found out that the truck had the wrong mass airflow meter, and it also ran like crap. I changed the maf and no change in how it ran. I cleared the maf code and drove it on jacks to get another code. The cel came back on with lean codes bank 1 and 2. I connected the obdll scanner and noticed all of the three o2 sensors showed no voltage ant all of the fuel trim % are (-100%). What are the chances that all 3 o2 sensors are bad? Do i have a bad engine control module? What sends power to the heated o 2 sensors and how do i test???