LEMON Manuals: Even more car manuals for everyone
Home >> Dodge and Ram >> 1984 >> Ramcharger AW150, 5.2 T, Standard >> Repair and Diagnosis >> Engine Performance >> System >> 3.7L & 5.2L EFC System >> Testing >> Electronic Fuel Control System Tests >> Oxygen Sensor Test

Oxygen Sensor Test

  1. Set parking brake and connect tachometer. Run engine at 1500 RPM and connect voltmeter to carburetor-to-computer output wire (Green). DO NOT ground carburetor switch. Hold choke blade closed. During the next 10 seconds, the voltage should decrease to 3 volts or less and maintain that level. If engine does not respond, proceed to step 2).
  2. Disconnect PCV system. During the next 10 seconds, the voltage should increase to 9 volts or greater and maintain that level until vacuum hose is reconnected. If sensor fails both tests, replace it. Reconnect all hoses and wires.
NOTE: Be sure basic timing and hot curb idle speed are set to specifications before performing these tests.
scientia non olet · About LEMON Manuals