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What are the reasons for an automatic transmission car not starting?

2 Answers

VonEthan

07/28/25 9:22pm

There are several reasons why an automatic transmission car may not start: no fuel, battery not supplying power, incorrect gear position, blocked fuel line, damaged fuel pump, modified car circuits, or severe car aging. More details are as follows: 1. Battery not supplying power: There are three situations where the battery does not supply power: over-discharge, continuous discharge, and electrode corrosion. 2. Incorrect gear position: If the gear of an automatic transmission car is not in P or N position, it will not start. Similarly, some manual cars will not start if the clutch is not pressed when starting. This situation may more easily occur to owners with mischievous children or beginners. 3. Blocked fuel line: Some owners may choose to add cheaper fuel to save household expenses, which may cause the engine injector or the fuel filter in the fuel tank to become blocked. 4. Damaged fuel pump: If the owner frequently lets the fuel in the tank remain at a low level, it may cause damage to the fuel pump. Therefore, it is recommended to refuel when there is a quarter of fuel left.

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McAdelyn

08/12/25 2:01am

After driving for so many years, I've summarized several common reasons why an automatic transmission car won't start. A dead battery is the most frequent issue - either from long-term parking or leaving lights on draining the power, causing dashboard lights to dim when attempting to start. There's also the gear position problem; automatics must be in P or N gear to start, being locked out in D or R gear. Starter motor failure is quite common too, with clicking sounds but no engine response. Fuel system problems like a broken fuel pump or empty tank mean the engine gets no fuel. A dead key fob battery or activated anti-theft system could also cause failure - trying the spare key might solve it. For self-troubleshooting, first check dashboard warning lights; if completely unresponsive, it's likely a battery issue - keeping jumper cables or a portable power bank is recommended.

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