Q: Will a faulty Knock Sensor cause my car to shut off while driving?
Recently my car has had trouble starting. It takes a little longer when starting but it will start. Then also recently, while driving and I notice this when my car is idling (like at a stoplight), my car will shut off. But it will start right back up. It has done this 3 times already. I took it to a Hyundai dealership and they claim the code went off for a faulty Knock Sensor and they want to charge $500 to replace it. I am wondering if this will even fix the issue of my car shutting off while driving?? I do not want to pay $500 and still have the same issue. Thank you.
My car has 114000 miles.
My car has an automatic transmission.
Recommended Services
| Car is hard to start Inspection | $94.99 - $114.99 | Get a Quote |
Less than 1 hour is required to replace the knock sensor (Hyundai OEM part number: 39250-2B000) on your particular engine. The dealer (OEM) knock sensor, which is the preferred part, costs around $50. A knock sensor, even if faulty, can not cause hard starting or stalling. To have your hard starting, as well as stalling issue, diagnosed, the recommended service is a hard starting diagnostic. If you request that service, the responding certified mechanic will get all of the issues resolved for you, including a determination of whether in fact the knock sensor itself is faulty or, alternatively, you just have a bad electrical connection to your existing knock sensor that is working perfectly well. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.
Get an instant quote for your car
Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing