Welcome to DSMtuners - the largest Mitsubishi Eclipse, Eagle Talon, 4G63t and 420A DSM performance resource on the web



















Login



Go Back   DSMtuners > DSM Forums > General > Newbie Forum
Welcome to DSMtuners - the largest Mitsubishi Eclipse, Eagle Talon, 4G63t and 420A DSM performance resource
You are browsing the site as a GUEST. Please login (or register) and gain the ability to post on our site and interact with other DSMers. You also get to browse the site with fewer advertisements. It is FREE to join!

Newbie Forum: Beginner/newbie/general DSM modification questions. First mods, how to run 10's when you haven't run 12's yet, any tech question that doesn't fit in another tech forum. Probationary Members must limit their tech posts to this forum and sub-forums.

Reply
 
 
LinkBack   Thread Tools
Old 08-26-2005, 08:34 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #1 (permalink)
Proven Member
 

slider85's Avatar
Registered: May 2004
Tech Posts: 450
Classifieds Rating: 0
Reputation: slider85 is on thin ice
Question

my alternator is making noise, why?


First, off I have an aluminum crank pulley but I'm not sure that has anything to do with it. Now, my alternator seems to get louder as I put more load onto it such as fans and subwoofer. Just want to know if that is normal or not? And, my car seems to be slightly slower when I'm using more things especially the stereo, I have a 10" sub with 700 watt amp and four speakers. I'm thinking about replacing the alternator and looking into an Optima battery. Anyways, what do you guys think of the alternator noise?



____________________________
Scott

mark post as helpful recommend reputation points    Reply With Quote
Old 08-26-2005, 08:59 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #2 (permalink)
Probationary Member
 

Z28kindaguy's Avatar
Registered: Aug 2005
Tech Posts: 3
Reputation: Z28kindaguy is an unknown
Can you describe the noise any better than that? I'm wondering because I think the stereo is putting too much of a load on that alternator and it's making it produce that noise. When I installed a remanufactured alternator on my car it would squeal everytime I turned on my fan because my fan was taking a ton of amps to run and the alternator didn't work well with it. So, I traded it for a higher amp alternator, 80 or 85 amp something like that and I haven't had any problems and I run an amplifier and an Optima Battery, they work very well, well worth the price.

Or you may want to try and adjust the belt if that may help any, but ya if you're requesting more power thanthe alternator can charge, then there will be an overload on it and drag it down, causing an increase in the noise. same thing happens when you turn your wheel with the power steering, it'll increase in noise when it has that load put on it.
Hope this helps

mark post as helpful recommend reputation points    Reply With Quote
Old 08-26-2005, 10:42 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #3 (permalink)
DSM Wiseman
 

blackGSX2g's Avatar
Registered: Apr 2004
Tech Posts: 2,931
Photos: 16
Classifieds Rating: 20
Reputation: You can trust this leader of the site
Send a message via AIM to blackGSX2g
Does your alternator give off the 'supercharge whine'?

Is your battery light on?

If you pull the terminals off of your battery while the car is running, does it change anything?

If any of the above is true, I'c look into getting a new alternator. Otherwise you might just be putting too much of a load on your atlernator at idle.


____________________________
Matt Lafond
BB 50-trim 6-bolt 2.0L
BMW 550i
View photos of this member's car 

mark post as helpful recommend reputation points    Reply With Quote
Old 08-27-2005, 12:27 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #4 (permalink)
Proven Member
 

slider85's Avatar
Registered: May 2004
Tech Posts: 450
Classifieds Rating: 0
Reputation: slider85 is on thin ice
yes, it does make a squeal sound, almost metallic sounding. it happens when I have high load on it. I can hear it clearly in my garage in the morning because the sound echoes right back to me so I sort of test it by turning my fan up and turning on my stereo, and that's when it makes more noise. What sort of amperage should I be looking for in a new alternator? Or should I get my stock one rewound to the amperage I want?


____________________________
Scott

mark post as helpful recommend reputation points    Reply With Quote
Old 08-27-2005, 12:49 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #5 (permalink)
Proven Member
 

Cheks_Talon_TSi's Avatar
Registered: Oct 2003
Tech Posts: 234
Classifieds Rating: 0
Reputation: Cheks_Talon_TSi is an unknown
Thumbs up

I am also running with a unorthodox (aluminum) Crank Pulley and my car also squeals a lot!!! It squeal everytime in the morning when i just turn on the car. Also when I turn on the A/C or when I turns on the headlights or fog lamps... It squeals for a while when load is applied to the alt, and it gets worst when I turns on the headlighst and the A/C...

I have tried with a 90amps alternator but it didn't work... Now, I get back to the OEM mitsubishi alt of 75amp (remanufactured), but still squealing. I noticed that when I adjust the belt and I left it more tightened it stop squealing but I also know that getting the belt too tightened can damage the alternator...

If you find out how to stop the horrible squeal, please let me know... I am also very desperate with that thing...

good luck!

PS: my car doesn't have any charging problems... I am reading 14.3-14.5volts. No bat lightbulb, any problem at all...


____________________________
Sergio Gzz
Visit Cheks_Talon_TSi's homepage! 

mark post as helpful recommend reputation points    Reply With Quote
Old 08-27-2005, 03:03 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #6 (permalink)
Proven Member
 

slider85's Avatar
Registered: May 2004
Tech Posts: 450
Classifieds Rating: 0
Reputation: slider85 is on thin ice
I think my car is charging fine as well, but the car just seems to be slower when the alternator is working harder. it's not a lot slower but it is noticeable, especially in the low-end. I'm going to find an Optima battery from Costco and pick-up a higher amperage alternator.


____________________________
Scott

mark post as helpful recommend reputation points    Reply With Quote
Old 08-28-2005, 07:15 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #7 (permalink)
Proven Member
 

fr33b1rth's Avatar
Registered: Jan 2003
Tech Posts: 231
Classifieds Rating: 0
Reputation: fr33b1rth is more helpful than not
Send a message via AIM to fr33b1rth Send a message via MSN to fr33b1rth Send a message via Yahoo to fr33b1rth
An alternator will alsways make noise. The more of a load you put on it, the louder it will get.

Any grinding noise (like a bad water pump) means the alternator is on the way out. The reason why your car is slower when you are using it is because the more amperage you pull, the harder it is to turn the alternator. It robs power from the motor just like AC.

mark post as helpful recommend reputation points    Reply With Quote
Old 08-29-2005, 07:00 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #8 (permalink)
Proven Member
 

Cheks_Talon_TSi's Avatar
Registered: Oct 2003
Tech Posts: 234
Classifieds Rating: 0
Reputation: Cheks_Talon_TSi is an unknown
Question

Quote:
Originally Posted by slider85
I think my car is charging fine as well, but the car just seems to be slower when the alternator is working harder. it's not a lot slower but it is noticeable, especially in the low-end. I'm going to find an Optima battery from Costco and pick-up a higher amperage alternator.
My car doesn't feel slower, but the squeal noise of the alternator (or alternator belt, i am not sure ) is uggly!!!!

So, this squealing noise is normal on DSM??? is there any way to stop the squeal???

Thanks in advance

Sergio G.


____________________________
Sergio Gzz
Visit Cheks_Talon_TSi's homepage! 

mark post as helpful recommend reputation points    Reply With Quote
Old 05-31-2008, 08:34 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #9 (permalink)
Probationary Member
 

ShadowMoses's Avatar
Registered: May 2008
Tech Posts: 1
Reputation: ShadowMoses is an unknown
Same thing happening to me and if i have a couple things turned on the sound is unbearable , i was gonna replace the alternator but the car stays on when i diconnect the battery.

does this mean that i have a bad battery or the alternator belt is to tight?

mark post as helpful recommend reputation points    Reply With Quote
Reply

Bookmarks

Thread Tools

 

» Recent DSM Photo
» Current Poll
How many times have you been to the Shootout?
1 - 39.86%
167 Votes
2-5 - 41.77%
175 Votes
6-10 - 10.50%
44 Votes
11-15 - 3.10%
13 Votes
16-20 - 4.77%
20 Votes
Total Votes: 419
You may not vote on this poll.
» Online Users: 705
210 members and 495 guests
Most users ever online was 1,704, 03-17-2008 at 09:11 PM.
DSMtuners Main Sections
DSM Forums
DSM Regional Forums
DSM Builds/Journals
DSM Articles
DSM Tech Guides
DSM Upgrade Paths
DSM Parts Reviews
DSM Vendor Reviews

DSM Classifieds
DSM Parts Guides
DSM Photos
DSM Videos
DSM Timeslips
DSM Dyno Sheets
Shirts & Apparel
DSMtuners Decals

Advertising Info
Our Sponsors
Site Rules
Terms of Service
Privacy Policy
Site FAQ
About Us
Contact Us

© 2014 DSMtuners.com - All Rights Reserved

DSMtuners is not affiliated with Diamond Star Motors. The Mitsubishi Eclipse, Eagle Talon, Plymouth Laser, Mitsubishi Galant VR-4, and associated logos are trademarks of Diamond Star Motors, Mitsubishi Motors, and Chrysler Corporation. No, we do not hand out car sponsorships.

All times are GMT -7. The time now is 08:56 AM.


Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

Search Engine Optimization by vBSEO 3.6.0