HELP - Humming sound after installing CAI
+ Reply to Thread
Page 1 of 6 1 2 3 4 5 6 LastLast
Results 1 to 20 of 102

Thread: HELP - Humming sound after installing CAI

  1. #1
    Silver Bullet eclaixp has not yet proved knowledgeable eclaixp's Avatar
    Join Date
    Oct 2005
    Location
    FL, USA
    Posts
    115

    Default HELP - Humming sound after installing CAI

    Hello guys,

    I got my accord CAI from eBay seller eautoracing. Shipping was quick. Anyways, I installed it yesterday. It sounds and looks great; however, there's a loud noticeable humming sound. It seems that is comming from the end of the pipe where the air filter is. This humming sound pitch does not change at all even when stepping on the accelerator. The sound is constant and never changes. Do you know what might be causing that? I have recorded the sound for you guys using my iRiver H10. You will notice that the humming sound will increase as I place the recorder on the floor close to the driver side tire where the air filter is. I hope this has been discussed before and that there's simple solution to this. I want this sound gone or at least minimized... I am very frustrated as it took me about 6 hours to perfectly do this CAI mod. I did make sure everything is plugged back in (small little blue hose. MAF sensor, and battery) as well as tighten up all hose clamps. BTW, I am using a K&N RU-3580 air filter instead. Also, the pipe's diameter is 2.75". Click here to listen to the sound.

    Thanks,

    Ed

    Pics of CAI:








  2. Remove Advertisements
    Hyundai Elantra XD
    Advertisements

  3. #2
    Super Moderator hyunelan2 knows a lot about Elantras hyunelan2's Avatar
    Join Date
    May 2004
    Location
    Near Chicago, IL
    Posts
    15,223

    Default Re: HELP - Humming sound after installing CAI

    I did not listen to the sound (I'm at work), but are you certain the tube is not contacting anything? Contact with other parts of the engine / fender is a common occurrance, and the vibration could cause noise as it resonates on the tubing.
    • Past: 2002 Elantra GLS (sold in 2010), 2003 Tiburon GT (Sold in 2014)
    • Present: 2004 Santa Fe GLS, 2004 Saab 9-3 Arc, 2010 Suzuki Equator Sport
    • Future: ????

  4. #3
    In da game for a while... DAILLESTWUN has not yet proved knowledgeable DAILLESTWUN's Avatar
    Join Date
    Jun 2004
    Location
    Miami Lakes
    Posts
    1,635

    Default Re: HELP - Humming sound after installing CAI

    I have never heard that sund in my life. It doesn't even sound like anything is rubbing....that's weird...
    First Elantra to ever have an Accord CAI!!!
    (Routed through the fender)

    Quote Originally Posted by SuperGLS
    HVAC in the door!?!?!?! That's awesome. You should put one in the passenger side door and then you can tell people you have dual climate control.

  5. Remove Advertisements
    Hyundai Elantra XD
    Advertisements

  6. #4
    I'm Frank fgummett has not yet proved knowledgeable fgummett's Avatar
    Join Date
    Sep 2005
    Location
    Nova Scotia, Canada
    Posts
    642

    Default Re: HELP - Humming sound after installing CAI

    I also supected vibration from something but am puzzled after listening to the recording.. as you say the humming is constant and does not change with engine revs. Any chance it is an electrical component... maybe the rad fan is causing the vibration..? Do you have any rubber or such where the pipe goes through to the front fender?

    I have an SRI and note a hissing sound as it pulls in air especially when I shut the engine off but its nothing like this sound.

    Sharp looking install by the way !
    Last edited by fgummett; 01-11-2006 at 11:58 AM.
    05GT 5SPD, CAI+K&N, P&P TB-coolant, P&P IM+Phenolic, PCV filter, TWM+M1, EVO Bushings, SS Clutch line, Slave, Tib Sway, F/R strut bars, PC680, Ground, Altron 4, Flamms, Iridiums, Xenons, 5 brake-light, X-Plod speakers/grills, De-badged, Custom grill, Painted calipers. SS brake lines SOON!

  7. #5
    Silver Bullet eclaixp has not yet proved knowledgeable eclaixp's Avatar
    Join Date
    Oct 2005
    Location
    FL, USA
    Posts
    115

    Default Re: HELP - Humming sound after installing CAI

    Quote Originally Posted by hyunelan2
    I did not listen to the sound (I'm at work), but are you certain the tube is not contacting anything? Contact with other parts of the engine / fender is a common occurrance, and the vibration could cause noise as it resonates on the tubing.
    I am sure that the pipe is not rubbing against anything as I even shaked the pipes a bit to see if sound would change but it didn't. Also, I put my hand around the air filter and the sound stayed the same.
    Quote Originally Posted by DAILLESTWUN
    I have never heard that sund in my life. It doesn't even sound like anything is rubbing....that's weird...
    Now I'm beginning to worried

    Quote Originally Posted by fgummett
    I also supected vibration from something but am puzzled after listenig to the recording.. the humming is constant and does not change with engine revs. Any chance it is an electrical component... maybe the rad fan that is causing the vibration..? Do you have any rubber or such where the pipe goes through to the front fender?

    Sharp looking install by the way !
    Thanks! Yes I did use the black plastics provided with the CAI around the hole... What and where is the rad fan?

    BTW, I forgot to mention that I have a 2005 Elantra GLS sedan automatic.
    Last edited by eclaixp; 01-11-2006 at 11:50 AM.

  8. #6
    I'm Frank fgummett has not yet proved knowledgeable fgummett's Avatar
    Join Date
    Sep 2005
    Location
    Nova Scotia, Canada
    Posts
    642

    Default Re: HELP - Humming sound after installing CAI

    "What and where is the rad fan?"

    Sorry.. are the radiator fans running when you recorded this? Just guessing but it seems to me it has to be something that runs at a constant speed and is not dependant on engine revs.
    05GT 5SPD, CAI+K&N, P&P TB-coolant, P&P IM+Phenolic, PCV filter, TWM+M1, EVO Bushings, SS Clutch line, Slave, Tib Sway, F/R strut bars, PC680, Ground, Altron 4, Flamms, Iridiums, Xenons, 5 brake-light, X-Plod speakers/grills, De-badged, Custom grill, Painted calipers. SS brake lines SOON!

  9. #7
    Senior Member yevRPS has not yet proved knowledgeable yevRPS's Avatar
    Join Date
    May 2004
    Location
    Pittsburgh
    Posts
    880

    Default Re: HELP - Humming sound after installing CAI

    almost sounds like there's a hole somewhere and the air passing through is making that noise. like if you blow over an empty beer bottle. but if that were the case i'd expect the pitch to change as your rev the engine and more air passes through. so maybe that's not the case. maybe it's the filter. try taking the filter off the end of the intake and start the car. just make sure there's nothing around that can be sucked in. or maybe put a sweatshirt or something over the opening. make sure it doesn't get sucked up. doesn't really sound like a vibration sound by check if the intake tubing is vibrating against the hole under the battery. keep us update

  10. #8
    I'm Frank fgummett has not yet proved knowledgeable fgummett's Avatar
    Join Date
    Sep 2005
    Location
    Nova Scotia, Canada
    Posts
    642

    Default Re: HELP - Humming sound after installing CAI

    ^^^ makes sense to do the trial and error method.. process of elimination.
    Does this go away if you hold the pipe steady in your hand. In the pictures I notice a wire loom snaking over top of the piping any chance that is carrying a vibration? Kinda grabbing at straws I know but this is a puzzler
    Last edited by fgummett; 01-11-2006 at 12:16 PM.
    05GT 5SPD, CAI+K&N, P&P TB-coolant, P&P IM+Phenolic, PCV filter, TWM+M1, EVO Bushings, SS Clutch line, Slave, Tib Sway, F/R strut bars, PC680, Ground, Altron 4, Flamms, Iridiums, Xenons, 5 brake-light, X-Plod speakers/grills, De-badged, Custom grill, Painted calipers. SS brake lines SOON!

  11. #9
    Silver Bullet eclaixp has not yet proved knowledgeable eclaixp's Avatar
    Join Date
    Oct 2005
    Location
    FL, USA
    Posts
    115

    Default Re: HELP - Humming sound after installing CAI

    OK, How about this? I'll go ahead and remove the K&N air filter and use the blue generic one supplied with the CAI. I'll see if the sound changes. Keep you guys updated. BTW, thx for the help... I posted this same thread over @ ElantraClub and so far no1 has replied
    Last edited by eclaixp; 01-11-2006 at 12:02 PM.

  12. #10
    Senior Member yevRPS has not yet proved knowledgeable yevRPS's Avatar
    Join Date
    May 2004
    Location
    Pittsburgh
    Posts
    880

    Default Re: HELP - Humming sound after installing CAI

    here's another idea. i dunno if it's just the angle of the picture but it looks like the intake is touching the brake fluid reservoir (right by the MAF sensor). with the car running try to push the tubing away from it. maybe it's vibrating the reservoir and sneding the vibrations down to the brakes or something else like that. i'd check that before swapping the filters.

  13. #11

    Default Re: HELP - Humming sound after installing CAI

    If the vibration was tight enough somewhere, as in didn't have a lot of room to move where it is coming into contact with something else, then it could definately be a vibration. Just like a tuning fork, doesn't matter what you place it against when it's been sounded, it still carries the same note, if the CAI was resting against something with no visible room to move (and the tiniest amount of actual room) then it would make a noise like that without appearing to be rattling or hitting anything.

  14. #12
    www.dfwhyundais.com paki has not yet proved knowledgeable paki's Avatar
    Join Date
    Apr 2005
    Location
    Texas is the home of the players and pimps
    Posts
    2,143

    Default Re: HELP - Humming sound after installing CAI

    sleepergt has this same problem, and i believe its the combination of pipe diameter and MAF sensor that is causing it. sleepergt's pipe does not contact anything.

  15. #13
    Silver Bullet eclaixp has not yet proved knowledgeable eclaixp's Avatar
    Join Date
    Oct 2005
    Location
    FL, USA
    Posts
    115

    Default Re: HELP - Humming sound after installing CAI

    Quote Originally Posted by yevRPS
    here's another idea. i dunno if it's just the angle of the picture but it looks like the intake is touching the brake fluid reservoir (right by the MAF sensor). with the car running try to push the tubing away from it. maybe it's vibrating the reservoir and sneding the vibrations down to the brakes or something else like that. i'd check that before swapping the filters.
    No I made sure that the pipe did not get in contact with the brake fluid reservior. Actually I had a friend with me and he put the car in drive and when the engine moved back, it still had half inch of room before touching the reservoir...

  16. #14
    Noob (play gunbound?) jayupark can identify a wrench
    Join Date
    Apr 2005
    Location
    Arlington, MA, USA
    Posts
    1,336

    Default Re: HELP - Humming sound after installing CAI

    Memphis Blues
    2004 Elantra GT

  17. #15
    www.dfwhyundais.com paki has not yet proved knowledgeable paki's Avatar
    Join Date
    Apr 2005
    Location
    Texas is the home of the players and pimps
    Posts
    2,143

    Default Re: HELP - Humming sound after installing CAI

    Thank you.

  18. #16
    Ultimate Post Whore 03SilverBullet has not yet proved knowledgeable
    Join Date
    May 2004
    Location
    Posts
    4,074

    Default Re: HELP - Humming sound after installing CAI

    Wow I have never heard anything like that be4 and I have put alot of intakes in alot of cars. Have your tried to put another intake in and see if the noise goes away?

  19. #17
    Silver Bullet eclaixp has not yet proved knowledgeable eclaixp's Avatar
    Join Date
    Oct 2005
    Location
    FL, USA
    Posts
    115

    Default Re: HELP - Humming sound after installing CAI

    Quote Originally Posted by jayupark
    I have the same sound... Sounds like a UFO hovering in one of those old Sci Fi movies huh? That sound comes from the air rushing through the intake tubes. Nothing to be concerned about (unless yours is really loud).
    OK, mine is really loud... isn't it? OK, so you're saying that this is normal...? If it is, then I'll just have to live with it... but I want more confirmation of this sound... Please please please listen to the sound... do many of you 04-05 elantra owners that have installed Accord CAI have this exact sound...?
    Last edited by eclaixp; 01-11-2006 at 12:18 PM.

  20. #18
    www.dfwhyundais.com paki has not yet proved knowledgeable paki's Avatar
    Join Date
    Apr 2005
    Location
    Texas is the home of the players and pimps
    Posts
    2,143

    Default Re: HELP - Humming sound after installing CAI

    01-03's normally do not have that sound. 04+ have this "problem" if you want to call it that, but theres really no problem at all.

  21. #19
    I'm Frank fgummett has not yet proved knowledgeable fgummett's Avatar
    Join Date
    Sep 2005
    Location
    Nova Scotia, Canada
    Posts
    642

    Default Re: HELP - Humming sound after installing CAI

    ...just went out to check my '05 GT 5SPD with a custom (AKA homemade) SRI and I DO have the exact same hum at the exact same pitch. It does not vary in pitch (except to disappear briefly) when I gun the engine. It is not as loud as on your recording but otherwise sounds and behaves identically. I suspect it is louder with a CAI than an SRI as there is more pipe for the sound to resonate through. I do not think this is a cause for concern unless the noise is really bothering you but my solution would be to use the gas pedal to make a much better noise ;-)
    Last edited by fgummett; 01-11-2006 at 12:37 PM.
    05GT 5SPD, CAI+K&N, P&P TB-coolant, P&P IM+Phenolic, PCV filter, TWM+M1, EVO Bushings, SS Clutch line, Slave, Tib Sway, F/R strut bars, PC680, Ground, Altron 4, Flamms, Iridiums, Xenons, 5 brake-light, X-Plod speakers/grills, De-badged, Custom grill, Painted calipers. SS brake lines SOON!

  22. #20

    Default Re: HELP - Humming sound after installing CAI

    Quote Originally Posted by fgummett
    It is not as loud as on your recording but otherwise sounds and behaves identically. I suspect it is louder with a CAI than an SRI as there is more pipe for the sound to resonate through

    Also could be louder from where the (I'm assuming) mic was placed to record the sound...

+ Reply to Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts