Knock Sensor Replacement at your home or office in Florence.

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customer ratings

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customer ratings

(106)


Recent Knock Sensor Replacement reviews in Florence

Excellent Rating

(106)

Rating Summary
96
4
2
0
4
96
4
2
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4

Brandon

17 years of experience
275 reviews
Brandon
17 years of experience
Brandon is great! Highly recommended.
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.

Theodore

15 years of experience
1293 reviews
Theodore
15 years of experience
Will work to get your car fixed. Thanks
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.

Sidney

13 years of experience
121 reviews
Sidney
13 years of experience
Took care of initial problems with good explanations and pointed out other repair needs down the line.

Chris

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

Ralph

37 years of experience
144 reviews
Ralph
37 years of experience
Great dude knows what he is don't

Armando

31 years of experience
33 reviews
Armando
31 years of experience
Armando was very professional. On top of that, he is very knowledgeable with his craft, so in turn, I learned some things. For my first experience, this couldn't have gone better.

Brian

17 years of experience
109 reviews
Brian
17 years of experience
friendly ! great service !

Emmette

35 years of experience
282 reviews
Emmette
35 years of experience
Emmett was great. We've requested him three times now and he's done an absolute great job.

Noe

35 years of experience
604 reviews
Noe
35 years of experience
Amazing service

Richard

28 years of experience
8 reviews
Richard
28 years of experience
Very personable and knowledgeable. Helpful and gave good advice.


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.

Fast and easy service at your home or office

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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