Wrangler L6-258 4.2L VIN C 2-bbl (1988)
7.
Using the curb (slow) idle speed adjustment screw, adjust the curb idle speed to 680 RPM (Figure 4).
8.
Using a hand held vacuum pump, apply 10-15 in. Hg. (34-51 kPa) vacuum to the Sole-Vac actuator (Figure 5).
9.
Increase the engine speed to above 1200 RPM for 3 to 5 seconds and allow the engine to return to idle.
