Diamante V6-2972cc 3.0L SOHC (1992)
Idle Speed: Adjustments
Base Idle Speed
With Scan Tool
NOTE: Adjustment of idle speed is usually not required. Before adjusting idle speed, check the following items:
- Ignition System.
- Fuel Delivery.
- Compression pressure.
- Idle air control motor.
1.
Precondition the vehicle as follows:
a. Engine coolant temperature greater than 185 degrees F.
b. Lights, electric cooling fan, and all electrical accessories off.
c. Transmission in neutral or park.
d. Steering wheel in the neutral position.
e. Ignition timing verified correct.
Ignition Timing Adjustment Terminal
2.
Connect scan tool to the data link connector (white).
NOTE: Connecting the scan tool grounds the diagnostic test mode control terminal.
Self-Diagnostic Connector Grounded (under dash drivers side)
3.
With the ignition OFF, remove the waterproof plug from the timing adjustment connector (brown), and ground the terminal using a jumper wire.
4.
Start the engine and allow it to run at curb idle speed.
5.
Verify Idle Speed.
Curb Idle Speed
700 ± 50 rpm.
