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International Automotive Technicians Network
2002 Oldsmobile Alero GX 2.2L MIL Lamp on
Posted to GM Driveability on 11/21/2007 5 Replies

need some help from iatn techs. got car kind of late. p0420 had above listed parts prior to this visit checked fuel press. 59psi. smoke tested clean. checked vac. 22/23in map 8 to 10 at idle. no noise from timmig chain. grafed both o2s on modis they almost loo...

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  Related Documents & Media  2002 Oldsmobile Alero GX

 
Message Closed w/FIX

car Vehicle Data

2002 Oldsmobile Alero GX

VIN 1G3NK52F72
Engine2.2 L / 4 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)
Message Closed w/FIX

car Vehicle Data

2002 Oldsmobile Alero GX

VIN 1G3NK52F72
Engine2.2 L / 4 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)