VEHICLE HAS POOR FUEL MILEAGE. ONCE WARMED UP AND HIGHWAY DRIVEN. FRONT CYL. BANK GOES LEAN. O2 SENSOR READY 2-4 mv WHILE THE REAR IS FLUCTUATING [...]. BOTH O2 SENSORS ARE NEW AND HEAD GASKETS WERE JUST [...] SEEM TO BE ANY INTAKE LEAK BUT COULD BE [...] SUGG...

FIX posted 3/3/2003

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