Eclipse L4-1997cc 2.0L DOHC (1991)
Air Flow Meter/Sensor: Specifications
Advance Ignition Timing [2]
At idle ............................................................................................................................................................................................................... 10° BTDC
Base Ignition Timing [1]
At idle ................................................................................................................................................................................................................. 5° BTDC
Air Flow Sensor [5]
At 750 RPM ...................................................................................................................................................................................................... 25 - 40 Hz
At 2,000 RPM ................................................................................................................................................................................................... 70 - 90 Hz
Barometric Pressure Sensor Voltage
(W/ key on and engine off)
At sea level ................................................................................................................................................................................ Approximately 4.0 Volts.
At 2,000 ft. ............................................................................................................................................................................... Approximately 3.75 Volts.
At 4,000 ft. ............................................................................................................................................................................... Approximately 3.50 Volts.
At 6,000 ft. ............................................................................................................................................................................... Approximately 3.25 Volts.
Coolant Temperature Switch [4]
Closed ....................................................................................................................................................................................................... 226° F (108° C)
Open ......................................................................................................................................................................................................... 239° F (115° C)
Crank Angle Sensor
Approximate Voltage at idle ................................................................................................................................................. 1.8 - 2.5v (needle fluctuates)
EGR Temperature Sensor Resistance [3]
At 122° F (50° C) .................................................................................................................................................................................... 60K - 83K Ohms
At 212° F (100° C) .................................................................................................................................................................................. 11K - 14K Ohms
EGR Control Solenoid Valve Resistance [3]
At 68° F (20° C) ........................................................................................................................................................................................... 36 - 44 Ohms
Engine Coolant Temperature Sensor Resistance
At 68° F (20° C) ............................................................................................................................................................................................... 2.5K Ohms
At 176° F (80° C) ............................................................................................................................................................................................... 300 Ohms
Fuel Injector Coil Resistance
At 68° F (20° C) ........................................................................................................................................................................................... 13 - 16 Ohms
Idle Speed Control Servo Resistance
At 68° F (20° C) ........................................................................................................................................................................................... 28 - 33 Ohms
Intake Air Temperature Sensor Resistance
At 68° F (20° C) ............................................................................................................................................................................................... 2.7K Ohms
At 176° F (80° C) ............................................................................................................................................................................................... 300 Ohms
Purge Control Solenoid Valve Resistance
At 68° F (20° C) ........................................................................................................................................................................................... 36 - 44 Ohms
TDC Sensor
Approximate Voltage at idle ................................................................................................................................................. 2.0 - 2.5v (needle fluctuates)
Throttle Position Sensor Adjustment Voltage
At Curb Idle ............................................................................................................................................................................................. 0.48 - 0.52 Volts
Throttle Position Sensor Resistance
Varies between ...................................................................................................................................................................................... 3.5K - 6.5K Ohms
[1] Refer to ADJUSTMENT PROCEDURES.
[2] Not adjustable.
[3] California Only.
[4] A/C Only.
[5] Measured across terminals 1 and 4.
