charge system fault

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Jun 18, 2022 | 07:34 PM

pnewt

Thread Starter

Burning Brakes

Joined: Aug 2002

Posts: 1,190

Likes: 56

From: Milan Indiana

charge system fault

recently purchased a 1999 Convertible and every time I start the car, I get the charge system fault message. Th e alternator shows less than 12 and after a minute or two it all corrects, lite off and gauge reads approx. 13. Haven't checked OBD yet and just wondering if anyone has seen this on their car

Jun 18, 2022 | 09:54 PM

Smoken1

Joined: Apr 2013

Posts: 5,030

Likes: 1,156

From: Oregon

St. Jude Donor '14-'15-'16-'17-'18-'19-'20-'21-'22-'23

Sounds like someone put the wrong alternator in the car

Jun 18, 2022 | 10:09 PM

ThomasR

Melting Slicks

Joined: Apr 2019

Posts: 2,466

Likes: 700

From: Clark, NJ

The C5 Corvette uses a special alternator.

https://www.corvetteforum.com/forums...nd-issues.html

Verify it's correct first.

Jun 19, 2022 | 05:03 PM

BigGun

Drifting

Joined: Feb 2008

Posts: 1,596

Likes: 67

From: Bahama North Carolina

There is sticky at the top of the page that includes sources for the proper parts for rebuilding. New replacements are pricey if you can find them. Use the dic to read the codes. The dic will give you more information than an obd scanner. A dying battery can sometimes set this code so I would check that first. It is not hard to a rebuild and at least the alternator is easy to get at.

Jun 19, 2022 | 05:37 PM

pnewt

Thread Starter

Burning Brakes

Joined: Aug 2002

Posts: 1,190

Likes: 56

From: Milan Indiana

It has a new battery and the fault goes away after about 1-2 minutes and gauge reads 13 or so. On start with fault it shows around 10? While driving it is no issue! strange

Jun 20, 2022 | 12:26 AM

jim993

Drifting

Joined: Sep 2009

Posts: 1,862

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From: Prescott, Arizona

WHAT are the codes??

Jun 22, 2022 | 08:56 AM

pnewt

Thread Starter

Burning Brakes

Joined: Aug 2002

Posts: 1,190

Likes: 56

From: Milan Indiana

no codes! Light comes on at start,1 or2 minutes and gauge returns to normal 13+ and light goes off. Going to clean up battery post and alternator connections and see what happens. Belt is newer

Jun 22, 2022 | 01:09 PM

rrwirsi

Melting Slicks

Joined: Nov 2014

Posts: 3,399

Likes: 1,339

From: Havre de Grace Maryland

My '04 Vert occasionally does the same dance (no codes) since I owned it, 6+ years. I just chalk it up to another electrical anomaly gremlin that is part of owning a C5.