C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Alternator Problems???

Thread Tools
 
Search this Thread
 
Old Sep 17, 2002 | 05:46 PM
  #1  
joseph p's Avatar
joseph p
Thread Starter
Drifting
20 Year Member
 
Joined: Oct 2001
Posts: 1,444
Likes: 4
From: Hawthorne NJ
Default Alternator Problems???

Out of nowhere my '89 is making a kind of whirring, wining noise that seems to be coming from the area near the alternator. It is only audible at lower speeds and idle and increases when you hit gas but can't be heared if going over 20 mph.
The alternator seems a little hot to touch, yet the volt meter reads as if it's working (13.5 , if revved )
Any ideas, if it's the alt. ...any suggestions on where to get it at a good price? Thanks
Reply
Old Sep 17, 2002 | 05:52 PM
  #2  
Shonan's Avatar
Shonan
Advanced
 
Joined: May 2001
Posts: 57
Likes: 0
From: Yokosuka
Default Re: Alternator Problems??? (joseph p)

Could be a bearing going bad on you. First signs would be noise at lower RPM's and case getting hot. :flag
Reply
Old Sep 17, 2002 | 06:39 PM
  #3  
Silver89's Avatar
Silver89
Drifting
 
Joined: Aug 2002
Posts: 1,451
Likes: 0
From: Calgary AB
Default Re: Alternator Problems??? (Shonan)

Sounds like the same symptoms mine had about a week before it croaked.
Say your goodbyes :rolleyes:
Reply
Old Sep 17, 2002 | 06:43 PM
  #4  
Ender85's Avatar
Ender85
Le Mans Master
 
Joined: Mar 2002
Posts: 5,786
Likes: 2
From: Chicago IL
Default Re: Alternator Problems??? (Silver89)

It probably is the alt. If you don't want to rebuild it, I recommend you get a new one (lifetime warranty) at AutoZone.

Good luck :seeya
Reply
Old Sep 17, 2002 | 06:47 PM
  #5  
Siveck's Avatar
Siveck
Drifting
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Aug 2002
Posts: 1,774
Likes: 125
From: Birmingham AL
Default Re: Alternator Problems??? (joseph p)

Could be the air pump or power steering pump. Remove the belt and see if there is any up/down play on the pulleys. I think my air pump is making some noise like that- a nice eliminator kit should fix it. :)
Reply
Old Sep 17, 2002 | 08:00 PM
  #6  
jfb's Avatar
jfb
Team Owner
20 Year Member
 
Joined: Mar 2001
Posts: 54,124
Likes: 30
From: Cincinnati, Oh USA
Default Re: Alternator Problems??? (joseph p)

With the engine idling, unplug the connector on the alternator and see if the noise quits. If so, and the alternator gets too hot to touch, then you have a defective diode and need a replacement alternator.
Reply
Old Sep 19, 2002 | 04:39 PM
  #7  
joseph p's Avatar
joseph p
Thread Starter
Drifting
20 Year Member
 
Joined: Oct 2001
Posts: 1,444
Likes: 4
From: Hawthorne NJ
Default Re: Alternator Problems??? (jfb)

OK, now I had switched my inst. panel to volt reading for this....I switch back and I can't get it to display the water temp.!!!!
What's up with this?? Anybody??
Reply
Old Sep 19, 2002 | 04:42 PM
  #8  
Silver89's Avatar
Silver89
Drifting
 
Joined: Aug 2002
Posts: 1,451
Likes: 0
From: Calgary AB
Default Re: Alternator Problems??? (joseph p)

is it just blank, or does it say Lo?

Maybe the wire came loose on the coolant temp sensor.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-1

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-2

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-3

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-4

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-5

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-6

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-7

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-8

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
story-9

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
Old Sep 19, 2002 | 08:34 PM
  #9  
joseph p's Avatar
joseph p
Thread Starter
Drifting
20 Year Member
 
Joined: Oct 2001
Posts: 1,444
Likes: 4
From: Hawthorne NJ
Default Re: Alternator Problems??? (Silver89)

No such luck ....it's on there tight!
Reply
Old Sep 19, 2002 | 10:19 PM
  #10  
jfb's Avatar
jfb
Team Owner
20 Year Member
 
Joined: Mar 2001
Posts: 54,124
Likes: 30
From: Cincinnati, Oh USA
Default Re: Alternator Problems??? (joseph p)

Dirty switch contact. Try operating the switch several times, or spray it with electrical contact cleaner. Bad connection throught the cluster connector. Remove the wiring harness plug on the cluster and plugging it back in. Circuit board problems , get the board repaired.
Reply
Old Sep 19, 2002 | 10:28 PM
  #11  
hngacurv's Avatar
hngacurv
Race Director
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Aug 2002
Posts: 17,367
Likes: 1
From: Kentucky
Default Re: Alternator Problems??? (jfb)

I just purchased an alternator from autozone for around $105. Not a bad price and easy to put on.
Reply

Get notified of new replies

To Alternator Problems???





All times are GMT -4. The time now is 01:55 AM.

story-0
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-1
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-2
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-3
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-4
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-5
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-6
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-7
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-8
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-9
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE