Shadow L4-153 2.5L SOHC Turbo (1989)
Idle Speed: Adjustments
Idle speed must be within 100 rpm of specification listed.
1986-90 4 cyl. exc. 1.8L, 2.0L; V6: With TBI, remove PCV valve and install special tool C-5004 (0.125" orifice) into hose. With MFI, disconnect idle
purge line from throttle body. Start engine and using Diagnostic Readout Box, access "Minimum Airflow Idle Speed." If checking speed is not within
specification range, replace the throttle body.
1.8L, 2.0L: Run engine at 2000-3000 rpm for 5 seconds minimum. Verify that idle is at specified checking speed. Turn AC on and verify that idle
increases to specified value.
2.0L: To adjust idle, ground timing adjustment terminal and terminal 10 of diagnostic connector. Set idle to specified setting speed.
