whats the code on my 1990 5.0 LX Ford Mustang?

acalex1967

New member
No one can read the code in my car with a scan tool, so I am trying to see if anyone has some suggestions. I have replaced the EGR sensor and the TPS as well. The light comes on when you start the car and goes out periodically as it fluctuates with the vehicles RPMs, but stays on mostly. Anyone with Fox Body 5.0 Mustangs might be able to help me. I am lead to believe that its an O2 sensor problem, but don't want to replace them until I have a little more positive opinion from some others. Anyone have any suggestions??
 
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