Diagnostic Aids

Water or alcohol n fuel may cause low O2S1 voltage during acceleration.

Check for adequate amount of fuel in the Tank. When the engine is idling or at steady cruise, the O2S1 voltage should vary from between approximately 100 to 900 millivolts. During power enrichment mode, more fuel is needed, and the O2S1 should rise above 444 millivolts. Check for faulty or plugged injector(s).