Emission Applications

1998 Pontiac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

2.4L (146") 4-Cyl. SFI

PCV, EVAP, TWC, FR, ⁽³⁾ ⁽⁴⁾ EGR, ⁽³⁾ SPK, O2S, HO2S, CEC, MIL
⁽³⁾ EVAP-CPCS, EVAP-CVCS, EVAP-VC, ⁽³⁾ SPK-ESC, ⁽³⁾ SPK-EST

3.1L (191") V6 SFI

PCV, EVAP, TWC, FR, ⁽³⁾ ⁽⁴⁾ EGR, ⁽³⁾ SPK, ⁽⁵⁾ HO2S, CEC, MIL
⁽³⁾ EVAP-CPCS, ⁽³⁾ EVAP-CVCS, EVAP-VC, ⁽³⁾ SPK-ESC, ⁽³⁾ SPK-EST

3.8L (231") V6 SFI

PCV, EVAP, TWC, FR, ⁽³⁾ ⁽⁴⁾ EGR, ⁽³⁾ SPK, ⁽⁶⁾ HO2S, CEC, MIL
⁽³⁾ EVAP-CPCS, ⁽³⁾ EVAP-CVCS, EVAP-VC, ⁽³⁾ SPK-ESC, ⁽³⁾ SPK-EST

5.7L (350") V8 SFI

PCV, EVAP, TWC, FR, ⁽³⁾ EGR, ⁽³⁾ SPK, AP, ⁽⁷⁾ HO2S, CEC, MIL
⁽³⁾ EVAP-CPCS, EVAP-VC, ⁽³⁾ SPK-ESC, ⁽³⁾ SPK-EST, ⁽³⁾ AP-EAP, AP-CKV, ⁽⁸⁾ AP-ERLY

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	ECM/PCM controlled.

⁽⁴⁾	Linear EGR valve.

⁽⁵⁾	Equipped with 2.

⁽⁶⁾	Except Firebird equipped with 2. Firebird equipped with 3.

⁽⁷⁾	Equipped with 4.

⁽⁸⁾	Digital EGR valve.