Charging issue please help! (Video inside)
Thread Starter
Pro
Joined: Jul 2010
Posts: 744
Likes: 13
Charging issue please help! (Video inside)
So as soon as I hit 2k rpms my voltage drops, belt doesn't seem to be slipping and the voltage doesn't return until it gets to idle... Here's a video does this look like a bad alternator?
I drove for an hour today and batter was not dead so there's definately charging going on somewhere
I drove for an hour today and batter was not dead so there's definately charging going on somewhere
Race Director
Joined: Dec 2013
Posts: 12,502
Likes: 3,629
Brushes are just about worn down (at the end of the cable slack), and as the alternator spins up faster, not enough tension of the bushings to the commutator to hold a connection.
The problem can be fixed by just re-soldering new brushing back into the brush housing, and new brushes are around $6 for the pair at any electric motor, or alternator repair shop.
https://www.corvetteforum.com/forums...-question.html
Also for grins, check the battery cables that go down past the back of the engine on the passenger side, since they may be worn and grounding out against the back of the motor. Then take a quick look at the back of the starter to make sure that the bakelite is not cracking apart, and a bad connection there.
P.S, If you are in the Denver area, I can do the brushes swap for you, since I need to do a write up with photo's on a tear down and rebuild of a OEM C6 alternator.
The problem can be fixed by just re-soldering new brushing back into the brush housing, and new brushes are around $6 for the pair at any electric motor, or alternator repair shop.
https://www.corvetteforum.com/forums...-question.html
Also for grins, check the battery cables that go down past the back of the engine on the passenger side, since they may be worn and grounding out against the back of the motor. Then take a quick look at the back of the starter to make sure that the bakelite is not cracking apart, and a bad connection there.
P.S, If you are in the Denver area, I can do the brushes swap for you, since I need to do a write up with photo's on a tear down and rebuild of a OEM C6 alternator.
Last edited by Dano523; Mar 22, 2015 at 11:02 PM.
Thread Starter
Pro
Joined: Jul 2010
Posts: 744
Likes: 13
Brushes are just about worn down (at the end of the cable slack), and as the alternator spins up faster, not enough tension of the bushings to the commutator to hold a connection.
The problem can be fixed by just re-soldering new brushing back into the brush housing, and new brushes are around $6 for the pair at any electric motor, or alternator repair shop.
https://www.corvetteforum.com/forums...-question.html
Also for grins, check the battery cables that go down past the back of the engine on the passenger side, since they may be worn and grounding out against the back of the motor. Then take a quick look at the back of the starter to make sure that the bakelite is not cracking apart, and a bad connection there.
P.S, If you are in the Denver area, I can do the brushes swap for you, since I need to do a write up with photo's on a tear down and rebuild of a OEM C6 alternator.
The problem can be fixed by just re-soldering new brushing back into the brush housing, and new brushes are around $6 for the pair at any electric motor, or alternator repair shop.
https://www.corvetteforum.com/forums...-question.html
Also for grins, check the battery cables that go down past the back of the engine on the passenger side, since they may be worn and grounding out against the back of the motor. Then take a quick look at the back of the starter to make sure that the bakelite is not cracking apart, and a bad connection there.
P.S, If you are in the Denver area, I can do the brushes swap for you, since I need to do a write up with photo's on a tear down and rebuild of a OEM C6 alternator.
I'm in Dallas tx unfortunately alternatively we testd the alternator at idle and it passed however failed over 2k Rams when tested and I hit the throttle.
I probably won't try to resolder anything myself because I truly don't have good luck rebuilding alternators,
So, it is safe to say I'll need a new alternator?
Melting Slicks
Joined: Nov 2013
Posts: 2,578
Likes: 68
From: Memphis Tn
I'm in Dallas tx unfortunately alternatively we testd the alternator at idle and it passed however failed over 2k Rams when tested and I hit the throttle.
I probably won't try to resolder anything myself because I truly don't have good luck rebuilding alternators,
So, it is safe to say I'll need a new alternator?
I probably won't try to resolder anything myself because I truly don't have good luck rebuilding alternators,
So, it is safe to say I'll need a new alternator?
Melting Slicks
Joined: Nov 2013
Posts: 2,578
Likes: 68
From: Memphis Tn
don't need any extra hands to do this.start the car an just lay the meter in the cowl area and touch the red lead to the nut on the back of the alternator and the black lead on the alternator housing to get your reading.
Thread Starter
Pro
Joined: Jul 2010
Posts: 744
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True, My Meter has super short wires, but i could probably figure it out anyways
Racer
Joined: Aug 2008
Posts: 413
Likes: 22
From: Justin TX
BTW, usually same day service and usually cost around $100 depending on what parts need to be replaced. Some of the diode stacks get pricey but you only pay for what is needed.
PM me if you want the info.
Last edited by TX-Techman; Mar 23, 2015 at 10:07 PM.
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