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Alternator problems?

rch105

Well-known member
Joined
May 18, 2004
Messages
124
Location
Pocono Mtns. of PA
Corvette
2000 Magnetic Red II Coupe
It started out with a whiney alternator, then went to my voltage display showing voltage at 11.1 volts. I went to my local auto parts store and purchased a Delco-Remy remanufactured alternator and installed same. And yes, I followed all instructions for disassembly and reassembly. I started the car, ran it for about 2 miles and noticed that all appeared fine. I decided to take it to work tonight (night shift) and on my 31 mile drive to work found my red idiot dash light (outline of battery), flickering, the instrument display showed the voltage varying between 13.2 to 14. 3. The red light finally came on and stayed on and the voltage display goes up to 16.2 volts. It drops off to 14 but the red light stays on, then goes back up to 15 and 16 volts. Is it a good assumption that this "new" reman. alternator is defective, or something else!
Thanks, as always!!!:w :bash
 

Robertwav1

Well-known member
Joined
Jan 7, 2003
Messages
822
Location
Ocala, Florida
Corvette
1993 Blue
Before condemning the alternator again check all the grounds. I'm sure someone here familiar with that year can tell you where they are. :beer
 

John Robinson

Gone but not forgotten
Joined
May 3, 2005
Messages
1,555
Location
Muncie, Indiana
Corvette
1993 Polo Green Coupe
After checking all the grounds take it back if it is still showing over 14.5 volts. The remain probable has a bad diod in it.;help
 

rch105

Well-known member
Joined
May 18, 2004
Messages
124
Location
Pocono Mtns. of PA
Corvette
2000 Magnetic Red II Coupe
Alternator problem update

I checked the grounds and all appeared fine with a meter. I pulled it off this morning and took it back to the store. They put it on their tester and as soon as they hit the start button it went to "FAIL". They tried it 3 times, then gave me another one. I had them test it first. Lesson I learned? Save yourself some time and trouble...have them test it at the store. If they don't want to, take your money to another auto parts store! :bar
 

jsinga

Well-known member
Joined
Nov 23, 2001
Messages
280
Location
Savannah, GA, USA
Corvette
87 Silver Coupe Way over 200k miles
Note to all:
I would only buy an alternator with LIFETIME warranty for an L98 car with CS-130 alternator. In the nearly 15 years I've had my 87 it's had 4 alternators on it. I'm not sure how many it went through before I got it. The last 2 were brand new Pep boys units.
I can say I think a bad battery took out the last alternator.
80's GM alternators were usually good for about 4yrs or 80K miles.

JS
 

SPANISHVETTS

Well-known member
Joined
Nov 5, 2002
Messages
1,143
Location
El puerto de Santa Maria Spain
Corvette
before 60,63&82 now 90 383 Stroker & 91 ZR1-Sold
I went through 3 in 20K miles. 4 years ago I bought a heavy duty alternator from Ice Burg... End of problem. :upthumbs
 

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