× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
2000 Pontiac Sunfire GT 2.4L Surge, MIL Lamp on
Posted to GM Driveability on 10/20/2008 6 Replies

This 2000 pontiac Sunfire came in with a ses light on, stored code p0420 - cat efficiency failed. Freeze frame showed it happend at idle. The o2 sensors are good. The cat was replaced 4000 kms ago. The car does not idle smooth, surges slightly. Vacuum is stead...

6 Replies Received (View Replies)

  Related Documents & Media  2000 Pontiac Sunfire GT

 
Message Closed w/FIX

car Vehicle Data

2000 Pontiac Sunfire GT

VIN 3G2JD12T3Y
Engine2.4 L / 4 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsSurge, MIL Lamp On
OccursIdle

Trouble Codes

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

car Vehicle Data

2000 Pontiac Sunfire GT

VIN 3G2JD12T3Y
Engine2.4 L / 4 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsSurge, MIL Lamp On
OccursIdle

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)