Car Stereo is the #1 Car Audio Online Resource for radio,speakers, MP3, amps, subwoofers, box enclosures, IASCA,DB Drag Racing, USACi and MECA events Car Stereo is the #1 Car Audio Online Resource
Car Stereo is the #1 Car Audio Online Resource
Car Stereo is the #1 Car Audio Online Resource  Welcome to CarStereo.com the Internet Guide to Car Audio Car Stereo is the #1 Car Audio Online ResourceMY ACCOUNT   
Car Stereo is the #1 Car Audio Online Resource
OnlineCarStereo.com
The best and biggest selection of mobile audio/stereo, multimedia/navigation and accessories at the lowest prices! Kenwood, Pioneer, Rockford Fosgate, JVC, Sony, Clarion, Jensen, Infinity, Kicker and more...
Car Audio Black Friday Sales!
Message Forums Car Stereo Message Forums > Head Units > Engine noise drives me crazy!!!!!!!! Freaking humming
Go Back Pages (1): [1]
Author
Thread Post New Thread    Post A Reply
egy605
New Member

 Engine noise drives me crazy!!!!!!!! Freaking humming

I've had cars before where I remove the factory head unit and replace with an after market alpine or pioneer etc. I've always had problems with engine noise.. I've used good RCA,s, I've used isolators, I have even used a ground wire for the head unit. Many of these have help reduce but never completely eliminated the engine noise ( the humming annoying sound when you accelerate). Any ideas????

Report this post to a moderator

New Post 05-08-2011 12:55 PM
Click Here to See the Profile for egy605 Click here to Send egy605 a Private Message Find more posts by egy605 Add egy605 to your buddy list Edit/Delete Message Reply w/Quote
sicaudio
Senior Member

 

bad ground... dont use factory ground make ur own...if that fails check the ignition wiring... bad wires/plugs or alt going bad will cause it as well...also bad battery wiring too...

Report this post to a moderator

New Post 05-08-2011 07:56 PM
Click Here to See the Profile for sicaudio Click here to Send sicaudio a Private Message Find more posts by sicaudio Add sicaudio to your buddy list Edit/Delete Message Reply w/Quote
sicaudio
Senior Member

 

A ground loop is the most common type of noise. It is a difference of resistance between your source and your amplifier. Easiest way to tell is if you get a hum while the car is running, and it increases in pitch when you rev it. First things's first. The ground wires to everything. Check and make sure you have a clean solid ground from your battery to the body of the car, as well as a good solid clean ground from your battery to your engine. Almost all cars have rubber motor mounts, hence the two grounding locations. Test the grounds with a multimeter set to ohms. Put the one end of the meter at the one end, then the opposite lead of the meter at the other end of the wire. Which side you put the leads on doesn't matter. Anything less than 4 ohms is generally acceptable, but the lower the better. My grounds all have a .3 ohms or less resistance. After you check that, we start troubleshooting the inside components. If you have a pioneer deck, they're notorious for blowing the pico fuse. ground the outer RCAs to the body of the radio. This will usually remove all the noise. Start with each component to troubleshoot if you do indeed have a noisy component. Take a cheap pair of rcas and cut one of the ends off. strip and twist the two wires together. This will make you a muting plug. Fire up your car, turn the radio on, and plug in the muting plug directly into the amp. Check all of the channels of the amp. If there's noise from the speakers, then the problem is with your amplifier. Check the grounds for the amp, and if that doesn't cure it, replace the amplifier. Next check any signal processors/line drivers/equalizers. Use your muting plug on the input of the device, never the output, unless you want a paperweight. If you do have noise coming from one of these components, take the ground of it and run it to the exact location of the ground for your amplifier. If you have no noise from these, we go on to the next step. Pull your radio out. If you're using the factory ground, take a run of 12 gauge wire right back to the ground where the amplifer is grounded to. Better yet, if you can, run the wire right into the terminal of the amplifier. Upgrade your power wire as well, and be sure to fuse it. To test if it's a bad radio or not - try another radio (duh) or use an mp3 player and plug it into either your eq/processor/driver or if those don't exist right into the amp. You can also hook up your head unit to a battery or a jump pack that isn't connected to your existing electrical system. If there's noise, then it's a bad unit. If not, keep reading. Check and make sure your rcas aren't close to power wires. Check and make sure your speaker wires aren't sitting on long runs of power wire either. The last thing that it could be is your alternator. Alternators make, by their nature, AC voltage. There's diodes or a rectifier inside of an alternator to change the AC into DC current. If your diodes are going bad, then this will then introduce noise. Get your alternator tested. After all of this, and you still have noise, the next recourse is a ground loop isolator. It removes the DC noise from the outer shell. Be sure to get an isolator that uses transformers. The cheaper isolators will remove your midbass.

Report this post to a moderator

New Post 05-09-2011 10:20 PM
Click Here to See the Profile for sicaudio Click here to Send sicaudio a Private Message Find more posts by sicaudio Add sicaudio to your buddy list Edit/Delete Message Reply w/Quote
egy605
New Member

 Very informative!!!

Ok considering everything you jus told me to check, which double din head unit would you recommend..alpine, pioneer, or clarion?

Report this post to a moderator

New Post 05-09-2011 10:31 PM
Click Here to See the Profile for egy605 Click here to Send egy605 a Private Message Find more posts by egy605 Add egy605 to your buddy list Edit/Delete Message Reply w/Quote
Texicanz
Member

 

if its a pioneer head unit ground the rca jacks inputs

Report this post to a moderator

New Post 05-13-2011 04:21 AM
Click Here to See the Profile for Texicanz Click here to Send Texicanz a Private Message Find more posts by Texicanz Add Texicanz to your buddy list Edit/Delete Message Reply w/Quote
sicaudio
Senior Member

 

the pioneers are the best imo... clarion are really good as well.....as for the grounding of the RCA.... lots of decks that fixes the issue on... when it happens with a PIONEER it is always user error.. they have a special fuse ( PICO fuse ) that protects the ground side of the deck via the rca's. a bad amp ground or undoing the rca's while the deck is on causes the fuse to blow... both are bad and user error.



you still need to pinpoint the issue now before getting a new deck or you will still have the same issue...

Report this post to a moderator

New Post 05-13-2011 08:33 AM
Click Here to See the Profile for sicaudio Click here to Send sicaudio a Private Message Find more posts by sicaudio Add sicaudio to your buddy list Edit/Delete Message Reply w/Quote
KJM01
Member

 

the pioneer 4200 double din(forgot exact model)not flip screen is awsome if I know it wouldnt get stolen i would have gotten that

Report this post to a moderator

New Post 05-13-2011 08:12 PM
Click Here to See the Profile for KJM01 Click here to Send KJM01 a Private Message Find more posts by KJM01 Add KJM01 to your buddy list Edit/Delete Message Reply w/Quote
KJM01
Member

 RE:

quote:
Originally posted on 05-13-2011 by Texicanz
if its a pioneer head unit ground the rca jacks inputs

I thought the pioneers didnt have the pico problem anymore?!

 

Report this post to a moderator

New Post 05-13-2011 08:12 PM
Click Here to See the Profile for KJM01 Click here to Send KJM01 a Private Message Find more posts by KJM01 Add KJM01 to your buddy list Edit/Delete Message Reply w/Quote
sicaudio
Senior Member

 

they don't anymore KJ ;) and the deck u r speaking of is the AVH 4200 DVD and it is fking wicked....

Report this post to a moderator

New Post 05-14-2011 09:01 AM
Click Here to See the Profile for sicaudio Click here to Send sicaudio a Private Message Find more posts by sicaudio Add sicaudio to your buddy list Edit/Delete Message Reply w/Quote
Author
Thread Post New Thread    Post A Reply
Go Back Pages (1): [1]

Show Printable Version  |   Email this Page  |   Subscribe to this Thread


   
 Recently Logged In Members  
RampagesZ, from Mobile, AL. Dayton605, from Dayton, TX. soltany, from beirut, MI. Rol886, from Rockaway Beach, NY. 2rgrbn, from Long Beach, CA. kaotiksyko, from , CO. banelsonms, from Moss Point, MS. weezer4rock, from , . jaboran, from swanton, OH. N2Audio, from Lawrence, KS. wolfantry, from erie, PA. IBBumpin, from Columbus, NE. tjsaudio, from anytown, MI. punkroc719, from Winchester, VA. Andrew, from Linden, MI. #1audio, from newport, NC. torawi01, from Corpus Christi, TX. Stripedss, from Hampton, GA. NRred2, from New York, NY. becesaudio, from davao city, AL.
see more member photos  post your members photo

 

 

 previous page Back Email this page to a Friend 
Home  |  Contact Us  |  About Us  |  Advertise  |  Join!  |  Log-In
 
Copyright © 2006 Online ConneXions Inc.
Web Designed & Hosting