Computers and Control Systems

TIMING:

Base Ignition Timing 5° BTDC At Idle [1]
Advance Ignition Timing 10 - 14° BTDC At Idle [1]

[1] Refer to ADJUSTMENT PROCEDURES.

RESISTANCE:

EGR Gas Temperature Sensor [2]
At 122°F (50°C) 69.4 - 88.5 k ohms
At 212°F (100°C) 11.9 - 14.4 k ohms
At 302°C (150°F) 2.8 - 3.6 k ohms

[2] California Only.

Ignition Coil:
Primary 0.5 - 0.7 Ohms
Secondary 11.4 - 15.6 k ohms

Oxygen Sensor Heater:
At 68°F (20°C) 5.1 - 6.3 Ohms

Coolant Temperature Sensor:
At -4°F (-20°C) 10 - 20 k ohms
At 32°F (0°C) 4 - 7 k ohms
At 68°F (20°C) 2 - 3 k ohms
At 104°F (40°C) 0.9 - 1.3 k ohms
At 140°F (60°C) 0.4 - 0.7 k ohms
At 176°F (80°C) 0.2 - 0.4 k ohms

Throttle Position Sensor:

CLEARANCE BETWEEN BETWEEN TERMINALS RESISTANCE
STOP SCREW AND LEVER

0in. (0mm) VTA - E2 0.2 - 0.8 k ohms
0.022in. (0.57mm) IDL - E2 2.3 k ohms or less
0.034in. (0.85mm) IDL - E2 Infinity
Full Open VTA - E2 3.3 - 10.0 k ohms
-- VCC - E2 4.0 - 9.0 k ohms

Air Flow Meter:

BETWEEN TERMINALS RESISTANCE

VS - E2 20 - 400 Ohms
(Measuring plate fully closed)

20 - 1200 Ohms
(Measuring plate fully open)

VC - E2 100 - 300 Ohms

VB - E2 200 - 400 Ohms

FC - E1 Infinity
(Measuring plate fully closed)

Zero
(Other positions)

THA - E2

At -4°F (-20°C) 10 - 20 k ohms
At 32°F (0°C) 4 - 7 k ohms
At 68°F (20°C) 2 - 3 k ohms
At 104°F (40°C) 0.9 - 1.3 k ohms
At 140°F (60°C) 0.4 - 0.7 k ohms