LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Ford
>>
1990
>>
Bronco II 4WD, Standard, M5OD-R1
>>
Repair and Diagnosis (Single Page)
>>
Engine Performance
>>
System
>>
Engine Controls - Tests W/Codes
>>
Test H - Fuel Control
>>
Code 86
>>
Code 42
September 30: LEMON manuals is back up on a temporary server! Slowness is possible
Code 42
Intermittent HEGO signal (SIG or GND circuit).
Excessive fuel flow, pressure regulator vacuum supply disconnected or blocked fuel return line.
Excessive fuel flow, damaged or stuck open injector(s).