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2000 Chevrolet Impala 3.4L MIL Lamp on
Posted to GM Driveability on 12/1/2004 15 Replies

Car came in with po401. Relaced EGR, no help. Replaced MAP sensor, no help. Ckecked for blockage in EGR port, found none. When comand EGR open with scaner Idle goes to poor as normal, and MAP voltage goes up as normal. Can find no blockage in pipe going to EGR...

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  Related Documents & Media  2000 Chevrolet Impala

 
Message Closed w/FIX

car Vehicle Data

2000 Chevrolet Impala

VIN ZG1WF55E4Y
Engine3.4 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursOn Decel

Trouble Codes

P0401EGR System Insufficient Flow Detected
Message Closed w/FIX

car Vehicle Data

2000 Chevrolet Impala

VIN ZG1WF55E4Y
Engine3.4 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursOn Decel

Trouble Codes

P0401EGR System Insufficient Flow Detected