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.
1990 Eagle Premier ESFACTORY OEM SERVICE PROCEDURE
Idle Speed Regulator Test
- Attach Harness Adapter (7195) to Idle Speed Exerciser (7088). Connect harness adapter and idle speed exerciser to idle speed regulator harness connector.
- Connect idle speed exerciser to vehicle battery. Start engine. Put idle speed exerciser switch in EXTEND position, then in RETRACT position. Idle RPM should change if idle speed regulator is functioning properly.
- If idle speed changes, regulator is functioning properly. If idle speed does not change, disconnect air hoses from idle speed regulator. Watch for valve to open and close while activating idle speed regulator. If idle speed regulator valve does not move while activating regulator, replace idle speed regulator.
Factory Service Tools
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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.
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