FixVault
Home
›
Chevrolet
›
1990
›
APV
›
Repair and Diagnosis
›
Engine Performance
›
System
›
Engine Controls - System/Component Tests
›
Emission Systems & Sub-Systems (Diesel)
›
Exhaust Pressure Regulation (EPR) System
Exhaust Pressure Regulation (EPR) System
NOTE:
For testing of the EPR system, see appropriate chart in TESTS W/CODES article.