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1998 Chevrolet Lumina 3.1L MIL Lamp on
Posted to GM Driveability on 4/10/2008 14 Replies

car came in with mil on po401 code. i checked snap on troubleshooter and says that pcm does a test once every ign [...] at 40mph on decel pcm opens egr and checks for map volts to raise.i took a movie and checked map sensor voltage when pcm is testing and does...

14 Replies Received (View Replies)

  Related Documents & Media  1998 Chevrolet Lumina

 
Message Closed w/FIX

car Vehicle Data

1998 Chevrolet Lumina

VIN 2G1WL52M5W
Engine3.1 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / sefi
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0401EGR System Insufficient Flow Detected
Message Closed w/FIX

car Vehicle Data

1998 Chevrolet Lumina

VIN 2G1WL52M5W
Engine3.1 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / sefi
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0401EGR System Insufficient Flow Detected