Car starts but won’t idle

Asked by Blive84 Feb 11, 2020 at 03:43 AM about the 2003 Honda Accord

Question type: Maintenance & Repair

Would crank like it had a dying battery could get it started but had to press gas
pedal to keep it it in drive but wouldn’t go accelerate over 25 mph. If
I took my foot off gas it would immediately die. Brake pedal was very hard to
press. After a few miles of this it completely died and now won’t restart, it
clicks when I turn the key. Definitely not the battery as all lights and controls
work. What could cause this?

2 Answers

The battery can still be dead even if the lights are working.....


It doesn't take a lot of juice to run lights & accessories, around three volts, but it takes a LOT more, around twelve and a half volts, to turn the starter motor..... If you need to use the gas peddle to keep the engine running, it's likely you have a clogged filter (fuel and/or air), Defective throttle position sensor, dirty or defective mass airflow sensor, or a bad O2 sensor. As for not reaching 25 mph, it's likely the car itself detected this problem and put itself into Limp Mode to prevent further damage.

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