Engine Noise Rattle (solved)

Turns out it was the mounting bolt of the alternator; it was loose enough to produce a rattle sound.

[@grif04]

This is the exact noise im getting in my clio (07) right now after a replaced alternator . ill check tomorrow to confirm! thanks for posting the video & solution!

[@joshuabassett4327]

I had the same problem. Come to find out (and I have no clue how) the alternator bolts backed out of the threads, had a 2013 f350 6.2

[@shimxininahi8024]

Wondering who put the alt in? There must be a lose nut somewhere or bad bushing?

[@joeyfirriolo4800]

Which bolt the long 17mm one that's hard to get to or the other?

[@tylerkapherr8154]

Okay so what did you do ? Did you replace the alternator?

[@diabolicaldoodle]

I’m confused. Did you need to adjust the bolts or what?

[@johnmetrac2898]

I’ve had the same problem I changed crank pulley and the Idler pulley and the power steering pump no joy it was the alternator when you turned it by hand it seemed fine , but when the belt was pulling on it the knocking noise started!! Good video than you

[@thebreadmaker2604]

john metrac i had also changed a crank pulley and somewhat when i push the gear into d the engine was abit vibrating somehow but only after some minutes i start the engine and went away after 10-15 minutes driving. How did u solve this issue

[@south5side2finest]

I just change the alternator thinking it was the cause of the noise but sound don’t going away think I’m have to use the long screwdriver to see where the sound coming from

[@jmfilmsinc]

my corolla does that sound and the belt move from the compressor pulley and broke,anyone know what is it

[@rostislavjandejsek2665]

The same here :) I was already suspected crankshaft bearings und it was such a tiny problem...

[@sondrek4425]

I had a somewhat similar noice in my Ridgeline. Replacing the alternator worked for me. (I also had the idler pulley and all the timing belt parts replaced, but the alternator was the one making the noice). The bolts were defo not loose :)

[@Chr1s0ver]

😮I have same issue on my Captiva Car just this year 2024, I was told the Problem it could be the Alternator 😢, the brand New it's up to $800, but the second hand used it Cost $150+ who ever put it in Charges $350= total $500

[@marlo0oty213]

Had the same problem, no replacing anything just make sure every bolt is up to spec.. if the sound is any different then its different problem

[@joshuajimenez8680]

did you replace the alternator?if so, did it stop the rattling? I have the same noise happening to me on my ford explorer, the noise only happens when the car is in drive, it especially gets loud at stop lights and or when the car is in drive and the brake is pressed

[@tetz8388]

Did you fixed it? I have the same problem

[@alpeto7793]

Same problem

[@EviLPlayeR04]

Same on Chrysler 200 2012

[@prdoohan]

Hmm I was going to go straight in and rebuild mine with new bearings. Maybe I'll check the bolts first...

[@fahadnazer9943]

By changing the alternator issue has been fixed

[@medium95]

Thanks for good information! my car has similar noise ( rattle noise occurs only on cold start + battery warning light from time to time, ) . I'll check the mounting bolts of the alternator, too.

[@sxrewedupdiego4862]

KS Lee did you ever get this fixed? i’m having the same problem except the rattling sound is much louder but i do get messed up battery signs

[@JaayGuns7]

Mine is literally doing the samething. It does it on idle and in between 1000 rmp and 1500 then it goes away after.

[@williamandrade4838]

Snowboarding204. what did you do to fix it?

[@panikarteaga5240]

How did u fix it?

[@Glock_360]

👀

[@AmrenMirit]

need the fix, it does the same on my 2018

[@madeyemo4404]

Same on mine.

[@Koogrr]

Watch those fingers! lol!

[@enmanuelcubas3401]

And hooded sweater strings

[@specialized29er86]

Poor baby the fiflth.

[@daveperryLXXVII]

sounds like i need to check mine lol

[@gwvanniekerk4317]

Mine was rattling,added 2 2mm spacers between the mounths of the alternator and my problem was solved

[@xlargetophat]

The bolt too tight

[@JourneyToTheTruthandTR]

Sounds more like your lifters. I took my belt off and started the engine and the sound went away. Put belt back on the sound came back. Used marvel mystery oil. That cleaned my lifters. and got rid of the tapping sound.

[@iOliAC]

JourneyTotheTruthandTotalRandomness In my case the mounting bolt of the alternator was very loose and the alternator unit was rattling from the vibration of the engine. I agree that this common sound can mean a lot of things also.

[@lonniecobb4901]

If the sound went away with the belt disconnected then it was coming from something the belt turns......

[@MrXYZ-uv4gj]

If the sound went away with the belt removed then why would you think it was your lifters? Your engine runs regardless of the belt. However, the serpentine belt drives your accessories, usually the alternator, water pump, power steering pump including a belt-tensioner and idler pulley.

[@novaorbitdragon]

The d17 or any of the honda motors do not have lifters.