Mustang V6-232 3.8L VIN 3 TBI (1984)
FIGURE 1 - 3.8L CFI
2.
Connect a jumper wire between the self-test input (STI) connector and the signal return pin on the self-test connector as shown in Figure 1.
3.
Turn the ignition key to the run position. Do Not Start Engine.
4.
The ISC plunger will retract. Wait until plunger is fully retracted (about ten seconds).
NOTE:
If plunger does not retract, refer to EEC IV diagnostics.
5.
Shut off the key.
6.
Remove the jumper wire.
7.
Perform throttle stop adjustments as follows:
^
Using pliers, grasp the TSAS screw threads and turn the screw (Refer to Figure 2) until it is removed from the CFI assembly. Install a new
screw.
^
With the throttle plates closed, turn the new screw inward until there is a .005 inch gap between the screw tip and the throttle lever surface
which it contacts.
^
Turn the screw inward an additional 1-1/2 turns, 8. Reinstall air cleaner.
Idle Speed Setting Procedures
Maximum ISC Limit Adjustment
If curb idle RPM is below limit or there is reason to suspect that cold engine idle speeds are low (i.e., engine stalls), the idle speed control device may be
restricting operation. Check and adjust in the exact sequence as shown below.
1.
Shut engine off and remove air cleaner. In the engine compartment, find the self-test connector and self-test input (STI) connector. These two
connectors are located next to each other on the driver's side, behind the strut tower and on the EEC harness.
FIGURE 1 - 3.8L CFI
2.
Connect a jumper wire between the STI connector and the signal return pin on the self-test connector as shown in Figure 1.
3.
Turn the ignition key to the run position. Do Not Start Engine.
4.
The ISC plunger will retract. Wait until plunger is fully retracted (about ten seconds).
NOTE:
If plunger does not retract, refer to EEC IV diagnostics.
5.
Shut off the key.
6.
Remove the jumper wire.
