Pickup 4WD L4-2559cc 2.6L SOHC (4ZE1) (1988)
Idle Speed: Adjustments
Idle Speed Adjusting Screw
Adjust engine idle speed under the following conditions:
1.
Engine at normal operating temperature.
2.
Lights, A/C, engine cooling fan, and accessories turned "OFF."
3.
Pressure regulator VSV electrical connector disconnected.
4.
Canister purge hose disconnected and plugged.
5.
EGR vacuum hose disconnected and plugged.
6.
Engine idling with throttle valve completely closed and idle switch "ON".
7.
Transmission in "Park" or "Neutral".
Start engine and check idle speed. If incorrect, adjust idle speed screw "A" on throttle body until engine idles at 950 rpm.