Tempo L4-140 2.3L HSC (1986)
1.
Engine off, remove air cleaner. Locate and remove tamper resistant cap. Connect jumper wire between selftest input (STI) and signal return pin on
the self test connector (Figure 1).
2.
Turn ignition key on but do not start engine. ISC plunger will retract within 10-15 seconds.
3.
Disconnect vehicle harness from the ISC motor.
4.
Turn ignition key to the off position.
5.
Remove jumper wire.
6.
Start engine and run to normal operating temperature.
7.
Check idle rpm: 600 t 50, in Drive (ATX) or Neutral (MTX).
Figure 2 1.9L CFI
8.
Adjust throttle stop adjusting screw (Figure 2). Refer to Step 7 for idle rpm spec.
9.
Turn the engine "OFF".
10.
Reconnect vehicle harness to the ISC motor.
11.
Reinstall air cleaner.
12.
Perform the EEC-IV Controlled Idle Learning Procedure.
^
Turn the engine "ON".
^
Turn all accessories "OFF". [With the engine at normal operating temperatures and the transmission in Neutral (MTX) or Drive (ATX), idle
the engine for 2-3 minutes.]
^
Turn the Air Conditioning "ON" (if applicable) and idle the engine for 2-3 minutes.
^
The controlled idle RPM should be within specifications [800 +/- 50, in Drive (ATX) or Neutral (MTX)] with air conditioning "OFF"].
^
Place a small quantity of room temperature vulcanizing (RTV) compound in the idle screw adjusting hole of the throttle body. This space was
previously covered by the tamper resistant cap.
NOTE:
Idle speeds are controlled by EEC-IV processor and idle speed control motor. If the ISC motor system is operating properly, these
speeds are fixed and can not be changed by traditional adjustment techniques.
^
Refer to the Modification Procedure Summary (Attachment, Page 1).
Modifications Decal For All Vehicles
