Emission Control Systems
Need a step-by-step guide?
Get an AI-powered repair guide with parts lists, cost estimates, and clear instructions for your 1991 Toyota.
7M-GE ENGINE (NON TURBOCHARGED)
Base Ignition Timing 10° BTDC At Idle [1]
Advance Ignition Timing 9 - 10° BTDC At Idle [1]
EGR VSV Resistance
At 20°C (68°F) 38 - 44 Ohms
[1] Refer to ADJUSTMENT PROCEDURES.
7M-GTE ENGINE (TURBOCHARGED)
Base Ignition Timing 10° BTDC At Idle [1]
Advance Ignition Timing More Than 12° BTDC At Idle [1]
EGR VSV Resistance
At 20°C (68°F) 38 - 44 Ohms
[1] Refer to ADJUSTMENT PROCEDURES.