Can I drive my car with a Bad Knock Sensor?

[@FunnySAVids]

I have a bad knock sensor and my fuel economy has increased impressively. I'm considering leaving it like that.

[@bernabeque7567]

Mine too.. from 22 mpg to 26 I don't know how

[@kkotadakidd1968]

Could be lean idk what I’m talking ab thi

[@LandonRod]

i feel like it’s bc it doesn’t accelerate as well as it did b4 so it saves gas 😂 i currently have this Code

[@boofy4892]

It’s because you’re car loses power so it’s burning less gas

[@EliasRizk53]

@@boofy4892good way to economy mode😂

[@epirreman]

I had a bad O2 sensor and got better fuel mileage and though I know it was starving my engine it was nice being able to go 2-3 weeks on a tank

[@cAspR0372]

Answer: Yes, technically you can, but you shouldn’t.

[@NoahCash111]

I run on a bad knock sensor, bad map sensor, bad trans, bad axel, bad ball joint. Buttttttt. To be fair I do drive a 95 Toyota

[@amjidali588]

Can thing is like the T800 😂😂

[@NoahCash111]

@@amjidali588 😭😭👌👌👌

[@Soldier1287]

Ah you’re good its a yota

[@bigdonald123]

Those can have everything wrong and will still run

[@toxicj27]

Dont drive with bad sensor, my car used to loose power and stall while over taking, as it is an old car while using AC, it stalls faster

[@kkotadakidd1968]

Depends on car I assume mine actually runs pretty good with it out it’s murders fuel tho

[@elibushwick8143]

Omg that's what's happening to mine as well cuz I havnt fixed the knock sensor

[@toxicj27]

Guys there is an update- the mechanic scamed me, there was nothing wrong with the sensor. The issue was the wire connecting key sensor and power was rusty and causing loose contact which inturn caused my car to shut off.

[@2bearQloza]

Right.. i change my knock sensor but i have errors in lambda sonda...

[@ChadVanryn]

I've had this code on my car for a year I couldn't tell you if it caused an issue or not it runs just fine. My alternator is going out and my starter went out and is replaced. But the O'Reilly's is acting like the knock sensor is more important than the alternator

[@fisols]

After the change, the malfunction did not disappear🥲

[@Bo-qt2zx]

😅

[@bryanrodarte5205]

Bad parts, any sensor should be OEM or a brand that is known to work for that specific sensor. Unfortunately there is a plague of bad parts especially electronics

[@dewilliams2012]

There's a mechanical fault causing the sensor to read outside of the allowable tolerances making the module its linked to send a message that something is wrong.

[@ESMARSALAZAR]

Short and extremely well explained

[@MercieJAutoCare]

Thank you so much! If you have any auto repair questions, let us know!

[@DavidLucas-zq8gb]

Can it throw your car in "limp mode" or make it feal as though it isn't getting enough fuel pressure?

[@4k_shotz505]

Car will go into limp mode and you could have a slow acceleration so it’s ok but it’s there for a reason and needs replacement

[@jacobstallcup8648]

I had a rat eat though my pigtail for it drove it ran rough bad idle detonation like crazy when under moderate load drove it like that for about a month did some piston head damage and overheated but nothing that really was to crazy I would get it replaced as soon as possible if so

[@jeremy6384]

This video helps! I left a thumbs up.

[@MercieJAutoCare]

We appreciate it! Thank you for watching.

[@frankbachman4916]

My knock sensor is bad and will cause ur check engine light to flash… then it will go into limp mode which decreases power and acceleration dramatically… not a little… amazing how one wire can cause so many problems

[@MercieJAutoCare]

Please refer to our video on flashing check engine lights.

[@CoveredByGraceInsurance]

I have had issues in the past of knock sensors making my transmission shift funny. And it's currently doing it again. I think the last time I only replaced one of them. I'm doing both as we speak

[@JohnsonfromWisconsin1232]

I replaced both knock sensors when I redid my oil pressure gauge and I replaced the harness too and now my engine light is coming on telling me it’s a knock sensors. Hopefully, it’s not faulty from new.

[@MercieJAutoCare]

If all the connections are good then most likely the knock sensors are not manufactured properly.

[@dubled9285]

I’ve driven thousands of miles with a knock sensor code lol

[@TJsVette]

I've replaced both of mine and the harness and the light still comes on. I give up haha

[@dogdue4588]

Yes!

[@earlkusba2746]

I replaced two knock sensors and harness two weeks ago and today it says Bank one knock sensor code P0327 or PO 337. Guess I’ll have to go look again.

[@russelcagle8155]

My1999 Chevy silverado 5.3 is doing the same thing . Same code . With new knock sensor in it says it has low circuit. Wassup!!!

[@buffalobill2965]

what if youre someone who runs less octane than recommended by manufacturer and your sensor goes bad? Doesnt that mean that damage could very likely occur?

[@ITALIAN744]

Just fix it great answer

[@cerniearvizu9173]

Great explanation. Thank you. So around How much to fix this?

[@MercieJAutoCare]

This varies depending on the type of vehicle you have.

[@dogdue4588]

All 4 of my O2 sensors are bad.

[@user-rg7sy9ye9u]

Spot on...subscribed

[@MercieJAutoCare]

Thanks for listening

[@mkchanel5612]

Thank you so much i love you videos ❤

[@MercieJAutoCare]

Glad you like them! Thank you so much!

[@jtv3935]

Thank you brother

[@MercieJAutoCare]

Any time!

[@jenniferwallhoward6974]

My engine light and trac light were both on, code came back as bad knock sensor..the mechanic replace sensor, still coded, replaced again, still coded. replaced again. Changed wires to the knock sensor...lights still on. I can't hear any knock. 2011 corolla. Any ideas?

[@rome8087]

Bad computer or very slight knock. Could be early stages of bad engine. Check for compression, blow by, and leak down test.

[@michelejewett6436]

Well, I have a question I was told by a diagnostic that my knock sensor is bad I see you’re in Arizona I’m in Arizona myself I’m in Mesa a was sold pretty much a lemon I was told all that was wrong with my alignment and the check engine light was on because of a gas cap When I have had to replace my rack and pinion my axle might oil pan gasket I transmission pan gasket my alternator, my starter and my knock sensor needs to be replaced. I don’t know how to get to it and I was told it inside or underneath the manifold do you have any advice for a young lady that has no clue what to do I just conquered stage four terminal cancer and my brother bought me this vehicle and I haven’t been able to move it in a month since I bought it. It drove for one week and I went to go make a U-turn and I pressed on my guess and my car just Stolt, I thought it was my alternator then I was told it was my fuel pump, but under diagnostic it shows that the knock sensor is bad. Do you have any advice for me?

[@MercieJAutoCare]

What kind of vehicle is this?

[@user-gu5zx7sc1k]

2006 mozda 6 v6 no it will put the car in limp mode and you will be stuck in 3rd gear now 2002 accord ex yes no real issues

[@Lisabaines1230]

I don't know about anybody else but my 2006 Honda CRV will not run with a bad knock sensor it slows down and will end up cutting off

[@Valdemar-Perez-III]

Arizona has emissions? I never had to do that, they just gave me my temp plate and had me on my way. (Unless it only applies to big cities)

[@MercieJAutoCare]

Yes we do here in the greater Phoenix area for cities in Maricopa County.

[@user-vw1sq5gt8v]

Thank you

[@MercieJAutoCare]

You're welcome

[@russelcagle8155]

Hey Rick I replace my Knock sensor. Once in awhile it will throw a code it's says the control Mode is getting a low circuit , please help what do I need to do to fix this . I have to Smog my Pickup to get Tags on it for. 2025. Russel

[@russelcagle8155]

I got 4 weeks to fix it help

[@MercieJAutoCare]

What vehicle is it?

[@Qusin111]

I would not recommend driving with a bad knock sensor, you can indeed damage the motor

[@bernabeque7567]

thank you for the enlightment

[@lucasmills1246]

I have a bad knock sensor on my Highlander with the 1mz (they notorious for it) it's a nightmare job and shops will price you out because they don't wanna do it. 😂 I'm so scared of trying to do it. You have to drain the coolant and remove so many vacuum lines and cables that my ADHD wouldn't work for this

[@MercieJAutoCare]

We're sorry to hear that! If you live in Arizona, we would love to help you out with this.

[@herbertnewman7774]

Subscribed. Thanks.

[@MercieJAutoCare]

Awesome, thank you!

[@KaressThomas]

I had a bad one and it made my starter go out 😭Honda element

[@markcavandish1295]

Is that my stolen Cat?!?

[@jordanbrant6648]

Will a bad knock sensor cause the engine to lose power ? My car wasn’t accelerating. Is that a normal cause from a bar knock sensor ?

[@MercieJAutoCare]

Most commonly, a slight reduction in crispness will occur but nothing dramatic.

[@jordanbrant6648]

​@@MercieJAutoCare ok! any idea what would cause a 2011 Hyundai Sonata to "lose power" ? and jerk violently when trying to accelerate ? does that sound like a knock sensor issue ? or something else ?

[@myownboss4450]

@@jordanbrant6648spark plugs maybe

[@EliasRizk53]

@@jordanbrant6648there’s many reasons, maybe the air mass flow

[@jordanbrant6648]

@@myownboss4450 It actually ended up being my spark plugs😂

[@johnwest4394]

Thanks Rick

[@gloriabetancourt7862]

My car has a rattling noise when I turn it on and when I turn ..What can that be ?? Do I need to get that fixed like fast ?

[@MercieJAutoCare]

Unfortunately, with any noise complaint, that is an issue we have to see in person to be able to diagnose.

[@Bo-qt2zx]

Possibly lifters?

[@fernandoreveles5411]

Where’s ur shop at so I can take my Yukon to get worked on

[@MercieJAutoCare]

East Mesa, Arizona

[@motodude23]

"No"

[@MercieJAutoCare]

Correct.

[@joellowe511]

Odd my car won’t start lol. And when it does the engine will kick off again.

[@flylowkey3407]

So it won't blow a hole through the piston??

[@hanginon1293]

Are you saying it will?

[@flylowkey3407]

@@hanginon1293 yea.... Eventually

[@MercieJAutoCare]

It is possible but not likely.

[@hanginon1293]

@@MercieJAutoCare Just put a Knock sensor in yesterday. Ran fine all day yesterday and today but check engine light just came back on. Went to Autozone to get it checked, now it's saying the Cat Converter needs replaced

[@autodidactic1]

​ @hanginon1293 after replacing nox sensor you are meant to take car for a long drive to sort the cat
apparantly taking car for a long drive to sort the denox sulphured cat only works on diesel engines with petrol engines it has to be removed and cleaned or replaced if necessary.. mine was showing code 30EA denox cat sulphurised but was also showing injector no1 fail changed the injector and the 30EA code went away maybe with the injector needing replaced it threw out the 30EA code for no reason.. BMfuckinW's arghhhhhhhhh 🤦

[@archieblevins833]

My Kia Sorento stopped on me several times

[@MercieJAutoCare]

We're sorry to hear that. We hope our videos help you finding a trustworthy shop that can take good care ofyou.

[@dogdue4588]

Negative. Has better acceleration!

[@julian2wavy875]

Thx

[@MercieJAutoCare]

Any time

[@50-STARS]

Very helpful sir thank u but Knox spelt wrong nox

[@MercieJAutoCare]

Ok. Thanks

[@nedoscarsandfishingvideos5500]

Don’t listen to this guy you can damage your engine