Home Auto Repair 1994 Oldsmobile Cutlass Supreme DTC 77 the throttle body Removal

1994 Oldsmobile Cutlass Supreme DTC 77 the throttle body Removal

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Download 1993 Chevrolet Camaro 3.4L 1995 Chevrolet Camaro 3.4L, Vin S 1994 Buick Skylark Custom 3.1L, Vin M, 1995 Chevrolet Lumina 3.1L Eng Cfg V6 1994 Chevrolet Corsica 3.1L, Vin M, Eng 1995 Pontiac Grand AM SE 3.1L, Vin M, Cfg V6 Eng Cfg V6 1994 Oldsmobile Cutlass Supreme S 3.1L, 1995 Pontiac Grand Prix SE 3.1L Vin M DTC 77. 1. Remove the throttle body, and inspect the Exhaust Gas Recirculation Valve (EGR) port in the intake plenum. 2. The passage plugs at the bottom where it dumps into the plenum. 3. Best to use an old speedometer cable in a drill to run inside the passage to knock all the carbon out. Restricted Exhaust Gas Recirculation (EGR) Passages When an EGR solenoid is activated by the Powertrain Control Module (PCM), the PCM monitors the change in the Manifold Absolute Pressure (MAP) reading. Carbon deposits anywhere in the EGR passageways will set this code.