Operation CHARM: Car repair manuals for everyone.

System Specifications


IGNITION TIMING:

Manual (California) 15 +/- 2° BTDC
Manual (49 State) 20 +/- 2° BTDC
Automatic (California) 10 +/- 2° BTDC
Automatic (49 State) 15 +/- 2° BTDC



COOLANT TEMPERATURE (TW) SENSOR

Coolant temperature/resistance

-20°C ( -4°F) 20 K Ohms
0°C ( 32°F) 5 K Ohms
40°C (104°F) 1 K Ohms
80°C (176°F) 350 Ohms
120°C (248°F) 100 Ohms


INTAKE AIR TEMPERATURE (TA) SENSOR

Intake Air temperature/resistance

-20°C ( -4°F) 20 K Ohms
0°C ( 32°F) 5 K Ohms
40°C (104°F) 1 K Ohms
80°C (176°F) 350 Ohms
120°C (248°F) 100 Ohms

MANIFOLD ABSOLUTE PRESSURE SENSOR (MAP)

Manifold Absolute Pressure/Output voltage chart

125 mm Hg (5 in. Hg) 2.5 Volts
250 mm Hg (10 in. Hg) 2.0 Volts
375 mm Hg (15 in. Hg) 1.5 Volts
500 mm Hg (20 in. Hg) 1.0 Volts
625 mm Hg (25 in. Hg) 0.5 Volts

OXYGEN SENSOR

Mixture/Output Voltage

Lean Less Than 0.4 Volts
14.7/1 Stoichiometric 0.4-0.6 Volts
Rich More Than 0.6 Volts