Answer
Jul 06, 2024 - 08:46 AM
Hi there,
Diagnosing a no-start issue with your 2017 Jeep Patriot, despite having replaced spark plugs, and fuel pump already, also having checked the relays as well as the ignition coils involves several steps to identify possible underlying problems. Here are the possible reasons for the issues:
1. A bad battery or loose electrical connections. Use a voltmeter to check if the battery is at the correct & expected voltage. Check for loose terminals from the battery to the alternator or starter circuit.
2. A faulty starter. Check the starter if there is a clicking sound, but the engine does not turn on. The starter motor or solenoid might be faulty.
3. Crankshaft position sensor problem. A defective component will prevent the engine from starting. The sensor provides crucial information to the ECM/ECU. If there is no signal, the ECU/ECM will not send fuel or spark to the engine.
4. A faulty ignition switch. A bad switch will prevent the engine from starting. Check carefully, if it is working properly and sending the correct signals to the starter and ECU/ECM.
I hope all those details help to figure out the problems with your vehicle.
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