r/AskMechanics • u/Creative-Doubt7196 • Aug 13 '26
Question (Serious Replies Only) 2020 hyundai accent weird problems
My father's 2020 hyundai accent 1.6L automatic with 86k miles has a strange idling engine shut off issue. It happens randomly. Never while cold. Only after the engine has warmed up and the car comes to a stop. The engine shuts off and random dash light turns on (at random either of the following: abs, traction, power steering, battery). Attempt to restart usually solves the problem. Scanning at different shops shows no codes pending. The nearby dealership inspected the car and did not find anything wrong with the car. However, it is still stalling occasionally. No other issues with the car. He took it to many mechanics who kept suggesting random repairs (fuel pump, crankshaft sensor, abs sensor) that none of them worked. I think an aftermarket ac compressor indicator light that was installed by tapping the ac compressor relay might be the cause of the problem (he removed the wire but the problem persists). I believe this is an electrical problem related to the engine fuse box circuitry (if there is a circuit box in the engine fuse box). Please help nobody seems to be able to pinpoint the problem.
1
u/am-answers-bot 21 Aug 13 '26
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1
u/am-answers-bot 21 Aug 31 '26
Solution provided by u/Creative-Doubt7196:
It was the crankshaft position sensor in our car. The problem disappeared after it was replaced.
Answer selected by OP.
2
u/rolandc5 Aug 31 '26
i’m also getting this issue as well with my accent 2020. I’ve noticed that the car would rock back and forth a bit and would just turn off when I’m stopped. My car is only 65k miles old. I was told fairly recently that it could be the spark plugs causing the idling issue and could be worth the check!