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.
2000 Jeep Wrangler SE, AutomaticFACTORY OEM SERVICE PROCEDURE
Checking Secondary Ignition (2.5L)
NOTE:
After each repair procedure has been completed, reconnect all components. Perform TEST VER-2 under VERIFICATION TESTS to ensure system is functioning properly.
- With engine idling, momentarily remove and reinstall spark plug wires from spark plugs while observing the secondary ignition kilovolt line. If engine will not idle, maintain a constant RPM above idle. If open circuit secondary ignition voltage is at least 25 kilovolts, secondary ignition system is okay and test is complete. If open circuit secondary ignition voltage is not at least 25 kilovolts, replace ignition coil.
NOTE:
Refer to manufacturer's operation manual for instructions in use of engine analyzer.
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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