Knock Sensor Replacement at your home or office in Mount Vernon.

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customer ratings

(106)

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customer ratings

(106)


Recent Knock Sensor Replacement reviews in Mount Vernon

Excellent Rating

(106)

Rating Summary
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4
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Brandon

17 years of experience
275 reviews
Brandon
17 years of experience
Brandon is awesome. He is so thorough and does a great job of explaining what is wrong and what is being done to make the repair. He goes above and beyond. Request him specifically for your repair needs.
Brandon is great! Highly recommended.

Vladimir

9 years of experience
214 reviews
Vladimir
9 years of experience
unclear communication reason i am deaf i already told him that i am deaf then he not talk much i watch him all way what he did and one part i told him about back tailgate i was try to said to him leave it and i will get part myself and i think that he dont listen what i told him after that tailgate stuck is done i told him leave it ,,, one is communication fail

Rodney

35 years of experience
415 reviews
Rodney
35 years of experience
Rodney was very responsive to our need and pointed out a further concern for us to be aware of. He arrived promptly for the appointment and diligently worked to make the repair. Great work ethic.

Jarius

20 years of experience
49 reviews
Jarius
20 years of experience
This was my first time using YourMechanic. I needed a sensor replaced on my car but the dealer quote seemed excessively high. The idea of a mechanic coming to my house and saving me time from driving to/from a shop and taking time off work was intriguing enough to try it and I'm glad I did. Jarius arrived early. He was friendly, courteous and professional. I stayed outside to watch and talk with him. It was a relief to see the engine light finally go off. I will definitely be looking at yourmechanic for future services.

Steve

29 years of experience
49 reviews
Steve
29 years of experience
Steve was on time,extremely knowledgeable, was able to answer all questions I had.he also assured me that the work would be done clean and right the first time around.it was,i will be requesting Steve for future work and to my friends also,thank you for a job well done,G.E.Castro

Terrance

19 years of experience
63 reviews
Terrance
19 years of experience
He was great and he did the service in a timely manner. I will defiantly book him again for future services!

Andrew

14 years of experience
346 reviews
Andrew
14 years of experience
Andrew was professional and timely. He was able to perform the repair within the time frame allotted. He was friendly and made sure my vehicle was safe to drive.

Chris

17 years of experience
412 reviews
Chris
17 years of experience
Will book Chris again. Timely, efficient and knowledgeable

Chet

40 years of experience
448 reviews
Chet
40 years of experience
Did great work on my truck! Will use Chet again and highly recommended him! Thanks Chet!

Theodore

15 years of experience
1293 reviews
Theodore
15 years of experience
Theodore is my go to mechanic. He is the man for any job or work that I need for my car. He is always punctual and even early sometimes which I appreciate. I respect the work that he does and grateful for a reliable, honest and dependable mechanic like him in my area.


Knock Sensor Replacement Service

What is the Knock Sensor all about?

The engine produces vibrations while running, and those vibrations change depending on how well the engine is running. When the engine is running poorly, often it can be corrected by adjusting the timing slightly. This is known as spark advance and retard. The knock sensor detects the vibrations in the engine and reports them back to the engine control module. From the frequency of the vibrations, the engine control module can advance or retard the timing to make the engine run smoother. The knock sensor is threaded into a hole in the engine block, cylinder head, or under the intake manifold. When the knock sensor isn’t operating properly, the engine will knock under load or when accelerating, and the Check Engine light will illuminate.

Keep in mind:

  • The knock sensor is an electrical sensor. If it fails, it will need to be replaced.
  • The symptoms of a faulty knock sensor are often misdiagnosed. A scan test can help isolate the failure without replacing unnecessary parts.

How it's done:

  • The vehicle is raised and supported on jack stands or the intake manifold is removed per manual as needed for access to the knock sensor.

  • The Knock Sensor is disconnected and unscrewed from the engine block.

  • The new knock sensor is installed, torqued to the correct specifications, and connected.

  • The vehicle is lowered off the jack stands or the intake manifold is reinstalled per manual.

  • The knock sensor is tested and the vehicle is road tested to ensure proper operation.

Our recommendation:

The knock sensor is commonly misdiagnosed as the symptoms related to it are similar to many other running problems. Have a mechanic check the codes in the engine control module to determine if the knock sensor is reading correctly. If there is a knock sensor-related code or the output from the knock sensor isn’t correct, the knock sensor needs to be replaced.

What common symptoms indicate you may need to replace the Knock Sensor?

  • Engine knocks loudly especially at highway speeds or on acceleration
  • Unexplained poor fuel mileage
  • Decreased performance under load or on acceleration
  • Check Engine light is on

How important is this service?

The knock sensor can cause the engine to run lean and hot if it is faulty, or it can run rich and burn excessive amounts of fuel. Driving your vehicle with a faulty knock sensor can lead to further repairs required from the symptoms if not addressed promptly.

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How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com