o2 sensors not reading?

svt slobra

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Hi guys!

Just bought a 99 gt (80k miles). On the ride home, I noticed it had a miss fire under load and the CEL is on. I changed out the coil packs for new Granatelli's and installed all new o2 sensors. After taking the car for a test drive, I noticed the CEL came back on. The codes its throwing area for all 4 of my o2 sensors being bad and an evap leak? .......Anybody ever had a problem like this?
 

coldweatherstang

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I currently have a similar problem going on with my 98gt and am trying to track it down. The codes it was throwing are JP and p1011 which are lean codes. But one of the reported fixes are o2 sensors. I'll keep updating I as I research.

Update: I had a derpa moment with that. The codes are actually p1130 and p1131. After cleaning the MAF running an injection cleaner its still throwing them so I am ordering o2 sensors and will replace.
 

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