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Intermittent will not start?

Tiny
LOL4
  • MEMBER
  • 2012 HYUNDAI ELANTRA
  • MANUAL
  • 115,000 MILES
I drive a short distance, go for a walk, and when I come back, sometimes the car won't start. Sometimes it's completely dead (no play in brakes or steering wheel), sometimes it just won't turn over. Has always started eventually (so far).
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Tuesday, June 6th, 2023 AT 9:55 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,740 POSTS
Hi,

When this happens, does the starter engage and the engine fails to start, or does the starter fail to engage?

Also, does the check engine lamp stay on while the engine is running? If it does, then you should have the computer scanned for diagnostic trouble codes. Most parts stores will do that free of charge for you.

Let me know exactly what happens. Also, let me know if this has ever happened when the engine is cold. If the starter does engage but the engine fails to start, my first suspect is a failing crankshaft position sensor. When they start to fail, often they will be adversely affected by heat. Once they cool a bit, they work again.

Take a look through this link and let me know if anything seems to mirror what you experience.

https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor

Let me know.

Joe
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Tuesday, June 6th, 2023 AT 9:43 PM

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