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Q: Misfires, sometimes no start

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misfires, sometimes no start

My car has 182536 miles.
My car has an automatic transmission.

A misfire and intermittent no start on this vehicle can be one or more possible problems and may even be two different problems. The misfire may be the plug wires, plugs, ignition coil or ignition module. Intermittent no start may be ignition module, cam or crankshaft sensors. I would recommend to have the engine checked for the misfire first if the no start cannot be verified. If the ignition wires are original then start there and replace the plus and plug wires. Then you will need to continue to drive it to see if the no start occurs and then see if the the engine is losing spark or fuel pressure. Then the no start can be diagnosed.

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