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Mastering lean code car diagnostics
What are lean codes: P0171 and P0174 indicate a lean fuel mixture on Bank 1 and Bank 2, often detected by upstream oxygen sensors. Why they matter: Lean conditions can cause misfires, hesitation, ...
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How to decode Pontiac engine numbers
Pontiac engine codes, casting numbers, and date codes reveal an engine’s identity and history. Learning how to locate and interpret them can confirm whether a powerplant is factory-original or a later ...
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