Knock Sensor Replacement at your home or office in Red Hill.

Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.

Estimate price near me

Service Location

customer ratings

(106)

$0.00

Upfront, Transparent Price


YourMechanic Benefits

Online Booking

Mechanic comes to you

12-month / 12k-mile warranty

Free 50 point safety inspection

Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

customer ratings

(106)


Recent Knock Sensor Replacement reviews in Red Hill

Excellent Rating

(106)

Rating Summary
96
4
2
0
4
96
4
2
0
4

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
I appreciate his professionalism, his attention to detail, and his mastery of mechanics. I would recommend in a hearbeat.

Jeff

32 years of experience
441 reviews
Jeff
32 years of experience
Jeff is fantastic! Very nice, efficient, and knows exactly what he's doing. He replaced my knock sensors today in around 4 hours when most shops told me it would take an entire day. He's very thorough and explains everything that needs to be done. I will book all of my future maintanence appointments for my car and my husband's with Jeff!
Jeff was a very competent and friendly mechanic. He was very knowledgeable and helped to identify other issues that will need to be repaired on my vehicle. He performed his job flawlessly even though the parts department/customer service did not perform their duties as I would expect. They sent out /ordered the incorrect parts which delayed the repair.

Genaro

12 years of experience
287 reviews
Genaro
12 years of experience
Genaro was on time and quickly resolved my issue in less than the time quoted. He also gave me some good advice on how to proceed with other potential issues with my car. I will employ his services again.

Ben

40 years of experience
1184 reviews
Ben
40 years of experience
Ben was very knowledgable and courteous. He also did a great job in checking to make sure everything works as they should. It was a great experience. I would use him again. Thanks Ben!

Mila

10 years of experience
128 reviews
Mila
10 years of experience
Mila Bayat is the best mechanic I have ever experienced with my car. He is polite and honest and willing to go extra mile. I will recommend Mila Bayat to anyone %100 without any doubt. Mila will keep you engage of what is going on and very respectful. Best mechanic ever!!!!!!! I really liked the work Mila did on my car. This a true asset to your company, Your Mechanic.

Rocco

21 years of experience
302 reviews
Rocco
21 years of experience
Ronco is by far one of the best mechanics I have ever had. He is so friendly and knowledgeable and he explains everything.

Paul

24 years of experience
211 reviews
Paul
24 years of experience
Excellent Service and outstanding knawledge

Joseph

32 years of experience
540 reviews
Joseph
32 years of experience
I appreciate Jospeh's professional manner and his expertise. He is doing more work on my car and I will definitely recommend him to my family and friends.

Chuck

9 years of experience
206 reviews
Chuck
9 years of experience
I thought he was timely and quite efficient.

Jose

16 years of experience
433 reviews
Jose
16 years of experience
Jose arrived on time and completed the necessary repairs in a timely manner. Jose is a professional mechanic and is very knowledgeable and explains the repairs in an informative and understandable manner. We always get great support from Jose and will continue to use him when repairs are needed for our 1998 Subaru Outback. We will also recommend Jose to our friends and family. .


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

Backed by 12-month, 12.000-mile guarantee


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