WebJul 11, 2024 · They definitely should have checked your battery at the very least before installing a new alternator. Putting back in a bad battery will eventually cause the alternator to go out again. So, yes I do think a new alternator full fielding to get a bad … WebNov 29, 2024 · A failed ECM power relay can also cause a battery drain or dead battery. If the relay shorts it can leave power on to the computer, even when the vehicle is turned off. This will place a parasitic drain on the battery, which will eventually cause it to go dead. This are article talks about symptoms of a bad powertrain control module (PCM).
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WebJul 20, 2011 · Whenever diagnosing any potential no-communication problem on any OBD II PCM, remember that the root cause of any PCM failure can be an over-voltage condition in the vehicle’s electrical system. In all cases, I recommend bench-testing the alternator for voltage output and AC voltage ripple before starting the vehicle just in case the initial ... WebSep 19, 2024 · A bad battery can definitely cause PCM problems. If the battery voltage is low, it can cause all sorts of issues with the PCM including reducing the life of the … litespeed cache minify
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WebApr 7, 2024 · Faulty car battery can affect your engine computer. A faulty electrical system in a car can play some very tricky games, and your … WebOct 27, 2024 · Can a bad battery cause PCM problems? A dying battery can cause the PCM to malfunction because it cannot provide the electrical energy that it needs. Can a low battery cause engine problems? Internal components: A weak battery affects performance by causing damage to the engine’s internal parts. The low voltage causes the … WebA failing ECM can cause a variety of problems. Read on to learn the most common symptoms of a bad ECM, replacement cost, and more. ... You’ll also see the engine computer referred to as the powertrain control … litespeed cache cloudflare apo