Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Buick >> 1994 >> Roadmaster Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 5.7L >> ECM/Pcm Code Charts >> Code 64, Right Heated Oxygen Sensor Lean Indication >> Misfire Or Stall

Misfire Or Stall

If engine misfires or stalls (including running out of fuel) while vehicle is moving, a Code 64 may set. If Code 64 is intermittent, see INTERMITTENTS in TESTS W/O CODES article in this section.

CODE 64 PCM TERMINAL & CIRCUIT WIRING IDENTIFICATION

Application PCM Terminal Wire Color
Right O2 Signal C8 Purple
Right O2 Ground C7 Tan
Fig 1: Code 64 Schematic Lean Exhaust Indication
G91H07378
Fig 2: Code 64 Flow Chart Lean Exhaust Indication
G91I07350
Fig 3: Code 64 Flow Chart
GB0013275