Cold Fast Idle - Adjustment Procedure

83chrysler7 Models

1982-1/2 & 1983 2.6L Domestic Built Front Wheel Drive Vehicles Equipped With 180~F Thermostat


Subject

Cold Fast Idle Adjustment Procedure


Index


FUEL

Date

April 4, 1983


No.

14-14-83


P-1013-C
NOTE: This cold fast idle adjustment procedure applies only to vehicles with the following engine part numbers (last three digits):

Federal: 535, 538, 540, 543
California: 536, 537, 541

These part numbers are found on the top left side of the engine cam cover. Also, these engines are equipped with 180~F thermostats.

SYMPTOM/CONDITION

Subject model vehicles may exhibit excessive fast idle or very slow idle RPM after cold engine start up.

FIGURE 1:

Adjustment Procedure

This adjustment requires the use of a new Miller Special Tool #C-4812 (Figure 1), which is included in the 1983-1/2 Miller Special Tool Package #CPD-83T.
1. Start engine and allow to come to full operating temperature, which can be determined by observing the radiator fan starting to operate with A/C turned off.

2. Install tachometer.

3. Allow cooling fan to turn off. Fan should not be running during this adjustment procedure..

4. Disconnect the vacuum advance hose at distributor diaphragm and plug hose.

FIGURE 2-A:

FIGURE 2-B:

5. Open throttle and install special tool C-4812 on the choke cam follower pin (Figure 2A & B).

FIGURE 3:

6. Release throttle lever and observe engine RPM. Engine fast idle speed should be 950 RPM +/- 50 RPM.

Fast idle speed is adjusted by turning the fast idle speed screw on the under side of the primary throttle lever (Figure 3).

Turning the screw clockwise increases RPM and turning screw counterclockwise decreases RPM.
7. Remove special tool from throttle lever and reconnect distributor vacuum advance hose at diaphragm.


POLICY: Reimbursable within the provisions of the warranty

PASSENGER CAR LABOR OPERATION TIME SCHEDULE:

TIME ALLOWANCE:
Labor Operation No. 14-30-07-90 . . . . . . 0.2 Hrs.

FAILURE CODE: 50 - Improper Adjustment