View ALL Isuzu Trooper Parts
If your Isuzu Trooper Air Flow Meter keeps failing the issue is most likely to much oil on a Isuzu performance air filter, or to much blow by from the Trooper engine.
Use only Isuzu OE quality replacement Catalytic Converters to keek your Isuzu Trooper in the best running condition. DriveWire sells only California legal Trooper OBD-II Converters.
If your Isuzu Trooper failed the emissions test due to high NOX, the EGR Valve is most likely the issue. If your Isuzu is running rough or has poor fuel mileage, replace the Trooper EGR Valve and gasket.
The Isuzu Trooper Oxygen sensor is a critical part of the emmision control system and should be replaced as soon as it fails. Make sure to check the Isuzu Trooper diagnosics codes for proper replacement of the O2 Sensor.