Knock Sensor Replacement at your home or office in Virginia Beach.

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customer ratings

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customer ratings

(106)


Recent Knock Sensor Replacement reviews in Virginia Beach

Excellent Rating

(106)

Rating Summary
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Peter

42 years of experience
1320 reviews
Peter
42 years of experience
Peter showed up early again which is great. He came to replace my aftermarket knock sensors with OEM. He informed me that I need a hose replaced as he was removing parts to get to sensors THANK YOU. I definitely will request Peter and recommend him to others. All around very nice guy. We had some laughs. Peter made sure I took truck for a run before he left to make sure everything ran top notch. Thanks again Peter
Peter changed out the knock sensor on my crv. Turns out the one he replaced it with might also be faulty but Peter is working with me and the YourMechanic office to get a Honda made sensor instead. Peter is great at taking care of his customers and he always puts his customers best interest first.

Deane

10 years of experience
340 reviews
Deane
10 years of experience
He was very knowledgeable and great to work with. I would definitely recommend him.

Patrick

32 years of experience
1216 reviews
Patrick
32 years of experience
always does a great job and answer any question

Nick

9 years of experience
25 reviews
Nick
9 years of experience
Good Mechanic

Jeremy

19 years of experience
410 reviews
Jeremy
19 years of experience
The best mechanic in the industry.

Richard

12 years of experience
601 reviews
Richard
12 years of experience
He was nice and knew his stuff. Very calm and collective.

Andrew

14 years of experience
346 reviews
Andrew
14 years of experience
He was early and professional. This is greatly appreciated since I requested the repair done at my place of work. Thanks!!

Rusty

22 years of experience
426 reviews
Rusty
22 years of experience
Great work yet again. Thank you Rusty!

Leo

17 years of experience
52 reviews
Leo
17 years of experience
Great job, thank you

Alex

15 years of experience
435 reviews
Alex
15 years of experience
Very knowledgeable and the most friendly mechanic I've met on YourMechanic. I will trust him to take care of both of my cars.


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