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Exhaust Gas RECIRCULATION
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Exhaust Gas RECIRCULATION
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Description
Operation
Notes
EGR Timer
Coolant Control EGR (CCEGR) Valve (Heavy Duty Emissions Only)
Charge Temperature Switch (Cts) (Light Duty Emissions Only)
Testing
EGR System Operation
EGR Delay System Test
Troubleshooting
EGR Valve Stem Does Not Move On System Test
EGR Valve Stem Does Not Move On Test; Operates Okay With External Vacuum Applied
Rough Idle, Slow Idle, Or Stall On Return To Idle
Poor Cold DRIVEABILITY, Rough Idle Or Stalls On Return To Idle
Weak Performance On Wide Open Throttle