Golf GTI L4-1984cc 2.0L DOHC (9A) (1990)
Idle Stabilizer Valve
Between terminals on valve ........................................................................................................................................................................... 4 - 12 ohms
Intake Air Temperature Sensor (EGR)
Between sensor terminals ......................................................................................................................... Refer to TEMPERATURE CHART - EGR
Knock Sensors
Between terminals 1 and 2 .......................................................................................................................................................................... infinite ohms
Oxygen Sensor
Preheat Resistor Cold (less than 68 deg. F./20 deg. C.) ........................................................................................................................................ 3 ohms
Preheat Resistor Hot (greater than 662 deg. F./350 deg. C.) .............................................................................................................................. 13 ohms
Output Voltage (with CO adjustment within specs) ................................................................................................................................... 0.3 - 0.7 volts
Tune-up Specifications
Air/Fuel Ratio .......................................................................................................................................................................................................... 0.7%
Air/Fuel Ratio-Limits [1].................................................................................................................................................................................. 0.3 - 1.2%
Timing .................................................................................................................................................................................................... 6° +/- 1° BTDC
Idle RPM [2] ..................................................................................................................................................................................................... 700 - 900
[1] Check CO with the oxygen sensor connected.
[2] Not adjustable, with A/C off.