Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1983 Chrysler ImperialFACTORY OEM SERVICE PROCEDURE
Automatic Idle Speed Motor
- Turn ignition on. Motor should move arm rearward and open throttle blades. When vehicle is started, idle should be 580 RPM in "D" and should remain constant. If not, adjustment may be necessary.
- Connect EFI tester with diagnostic aid. Connect tachometer pick-up to No. 1 spark plug lead, battery leads to battery, and place diagnostic aid switch to normal position.
- Start engine and run until warm. Move diagnostic aid switch to manual position and depress control switch until engine speed no longer decreases. Place transmission selector in "D".
- Idle speed should be 530-630 RPM. If not, adjust to 580 RPM by turning screw on end of AIS motor linkage. One turn of screw will change idle speed 50 RPM.
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.