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Engine knock sensor replacement?

Tiny
ZIA BALOCH
  • MEMBER
  • 2006 CHEVROLET LUMINA
  • 300,000 MILES
My car engine have a knocking problem in ideal condition. When AC starts it is increased. But in running on road or increasing RPM it's find okay.
I used the cleaning agent in fuel tank. And also clean the air ITV (inlet throttle valve) changing all spark plugs. Please guide me what is the exactly issue, knock sensor?
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Sunday, September 18th, 2016 AT 8:38 AM

11 Replies

Tiny
DANNY L
  • MECHANIC
  • 5,648 POSTS
Hello, I'm Danny.

I'm not sure if you entered the wrong year but 2001 was the last year a Chevrolet Lumina was made. Here is a tutorial for you to view in regards to how a knock sensor works:

https://www.2carpros.com/articles/how-a-knock-sensor-works

I've attached picture steps below for knock sensor replacement including its location for your car. Hope this helps and thanks for using 2CarPros.
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Wednesday, January 27th, 2021 AT 9:38 PM
Tiny
YASERHU
  • MEMBER
  • 2 POSTS
  • 2001 CHEVROLET LUMINA
  • 6 CYL
  • AUTOMATIC
  • 125,000 MILES
I am submitting an issue I am facing with Chevrolet Lumina. I am living in Dubai, so this model could be similar to Malibu in USA.

The car is good with a V6 Engine. However I started getting a problem around 3 months ago.

Upon accelerating. I am getting the check engine light. If I DON'T accelerate and try to build up speed very slowly - the check engine light will not show up. But in reality it's impossible not to accelerate. This light will remain until I turn off the car. I am able to normally drive the car but I feel it’s weaker. I’ve also noticed that at around 40 to 50 miles per hour (80 to 90 kms/ hour) the car is rough-i.E when switching from gear 2 to 3 I believe?

I've tested the car many times and these are the codes that I get- but I feel something else is causing them

P0101- MAF
P0327- Knock sensor
P0332- Knock sensor

FYI- not all computer testing companies were able to access the car computer or reset it. Some were successful but not all. They told me this car is like this- it's computer doesn't always allow access.

The latter two codes are more common that the earlier; and I even got the Crankshaft sensor issue sometimes.

My Action- Despite changing the 2 knock sensors twice (first with used ones, followed by new ones) and resetting the car computer the issue is still there.

The mechanic suspected a wiring issue causing the knock sensor circuit, but then he and other mechanics concluded that the wiring is fine.

I've also borrowed a slightly used MAF sensor from my dealer to see if the code does change but the code and the issue was there.

This car doesn't have any Oxygen sensor- and I don't know why. May be the model doesn't have.

One of the mechanics told me try and change the TPS speed sensor, I believe, but I am not ready for further trial and error tests.

Any ideas of what to do?
Thanks
Yaser
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Friday, January 29th, 2021 AT 10:36 AM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
There is no code p0332 but ther is a code 336 which it hink you have which is cam sensor. A short to ground on that sensor will cause your knock sensor code as well as any knock that is loud enough to set it off. The cam sensor can also cause the 336 code so my advice would be to replace the cam sensor and see if the other codes are ok. Also check the wiring leading to the where the new sensor hooks up. For maf sensor it needs to be check ed for poor connections and or a short to ground between sensor and pcm. A pro really needs to check this against the map sensor during a freeze frame cycle to read voltages. Also check for a vacuum leak around map sensor. Btw a Lumina is a Lumina not a Malibu two different body styles. See pic for cam sensor and harness.
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Friday, January 29th, 2021 AT 10:36 AM (Merged)
Tiny
YASERHU
  • MEMBER
  • 2 POSTS
Thank you Hmac300

I am pretty sure there's a code which is 332

There could also have been 336 but I didn't see it because i've only witnessed two computer tests and these are the codes I saw.

I have a very strong feeling that what you've said about the Crank sensor is possibly the cause. I will try your instructions and will advise accordingly

Thank you
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Friday, January 29th, 2021 AT 10:36 AM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
There is no code 332 also it's the cam sensor not crank sensor reread my reply
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Friday, January 29th, 2021 AT 10:36 AM (Merged)
Tiny
MAMMAJUICE13
  • MEMBER
  • 3 POSTS
  • 1992 CHEVROLET LUMINA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 25,000 MILES
Will a knock sensor cause car to not start? The code pop's up 4 it and it has started since but will not any more. Where is it exactly I have not been able to locate it yet?
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Friday, January 29th, 2021 AT 10:36 AM (Merged)
Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,750 POSTS
No knock sensor will not make it not start. There is no code 4. Double check and get back to us
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Friday, January 29th, 2021 AT 10:36 AM (Merged)
Tiny
MAMMAJUICE13
  • MEMBER
  • 3 POSTS
Sorry it was code 43
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Friday, January 29th, 2021 AT 10:36 AM (Merged)
Tiny
JERZY
  • MEMBER
  • 2 POSTS
  • CHEVROLET LUMINA
I would like to know the location of the Knock sensor of a 1992 Chevy Lumina Euro with a 3.1 liter V6 engine with 214,000 miles on it.
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Friday, January 29th, 2021 AT 10:36 AM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
The KS is on the lower right rear of engine below the exhaust manifold.
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Friday, January 29th, 2021 AT 10:36 AM (Merged)
Tiny
JERZY
  • MEMBER
  • 2 POSTS
Thanks a lot for in info rasmataz. Do you know any tricks or tips I might need to change the knock sensor? Thanks again
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Friday, January 29th, 2021 AT 10:36 AM (Merged)

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