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Discussion Starter #1
I just bought my first 97 Jeep Wrangler. Bought it cheap with check engine light on reading p0171 & p0172. Seller had receipts where he changed all O2 Sensors, air filter, fuel pump, fuel injectors, catalytic converter, and I already sealed leaking exhaust at manifold and catalytic converter. Firestone checked O2 sensors and advised they are running fine. Any ideas?
 
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