Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

The fix for my endless alternator failure's

Thread Tools
 
Search this Thread
 
Old Jul 6, 2023 | 02:25 PM
  #1221  
RPM WS6's Avatar
LS1Tech Administrator
20 Year Member
Shutterbug
Community Builder
Community Influencer
iTrader: (3)
 
Joined: Nov 2001
Posts: 34,647
Likes: 2,573
From: Schiller Park, ILL Member: #317
Default

Why not just get a Powermaster? Great quality in my experience, I think that's the only brand I would buy for an alternator. At this point, I don't trust that any of the OE "branded" stuff is going to be as good as the assembly line original.
Reply
Old Jul 6, 2023 | 03:42 PM
  #1222  
badmfkr's Avatar
TECH Fanatic
20 Year Member
Photogenic
Liked
Loved
iTrader: (4)
 
Joined: Apr 2004
Posts: 1,378
Likes: 14
From: Atlanta, GA Ft. Walton Beach, FL
Default

^ this
https://www.summitracing.com/search/...20%23%2048206?

what cars came w/ this alt? like if it's not to old of a model wouldn't is be better to get a used, like thats what this long thread is all about right?
Reply
Old Jul 6, 2023 | 11:48 PM
  #1223  
RPM WS6's Avatar
LS1Tech Administrator
20 Year Member
Shutterbug
Community Builder
Community Influencer
iTrader: (3)
 
Joined: Nov 2001
Posts: 34,647
Likes: 2,573
From: Schiller Park, ILL Member: #317
Default

Originally Posted by badmfkr
Yes, that's what I would get if I needed one today. I bought one of their units for my '71 (different case design but same brand/quality) years ago and it's been nothing short of excellent.

Originally Posted by badmfkr
what cars came w/ this alt? like if it's not to old of a model wouldn't is be better to get a used, like thats what this long thread is all about right?
IMO, the crap shoot of buying used is only worth it if it's really cheap and you have nothing but time on your hands to mess with this, otherwise you can get quality right out of the box with Powermaster.
Reply
Old Jul 7, 2023 | 06:44 PM
  #1224  
badmfkr's Avatar
TECH Fanatic
20 Year Member
Photogenic
Liked
Loved
iTrader: (4)
 
Joined: Apr 2004
Posts: 1,378
Likes: 14
From: Atlanta, GA Ft. Walton Beach, FL
Default

how are you Guy's grounding the alt. case to the cars body?
I have mine though the lower mounting bolt. was concidering buying the inverted torque bit an then ground to the star bolt.

Amazon Amazon
thanks for alt. advice
Reply
Old Jul 7, 2023 | 07:43 PM
  #1225  
01CamaroSSTx's Avatar
11 Second Club
10 Year Member
Liked
Loved
Community Favorite
iTrader: (3)
 
Joined: Feb 2015
Posts: 6,014
Likes: 2,294
From: Conroe, Texas
Default

From the supplied ground post on the housing of the alt to the body.
Reply
Old Jul 7, 2023 | 08:46 PM
  #1226  
badmfkr's Avatar
TECH Fanatic
20 Year Member
Photogenic
Liked
Loved
iTrader: (4)
 
Joined: Apr 2004
Posts: 1,378
Likes: 14
From: Atlanta, GA Ft. Walton Beach, FL
Default

^ not seeing ground post on the back or front.do see the positive output . also don't see the exciter wire plug thats should be on top. is it now on the bottom at 6 o'clock? thanks



Reply
Old Jul 7, 2023 | 08:54 PM
  #1227  
01CamaroSSTx's Avatar
11 Second Club
10 Year Member
Liked
Loved
Community Favorite
iTrader: (3)
 
Joined: Feb 2015
Posts: 6,014
Likes: 2,294
From: Conroe, Texas
Default

Yeah that one dosen't show a ground post but you can still run a ground lead off the body of the alternator to the chassis.

Reply
Old Jul 12, 2023 | 02:59 PM
  #1228  
badmfkr's Avatar
TECH Fanatic
20 Year Member
Photogenic
Liked
Loved
iTrader: (4)
 
Joined: Apr 2004
Posts: 1,378
Likes: 14
From: Atlanta, GA Ft. Walton Beach, FL
Default

Originally Posted by 01CamaroSSTx
Yeah that one dosen't show a ground post but you can still run a ground lead off the body of the alternator to the chassis.

https://youtu.be/mN3EoWIvyCY?t=80
just pulled the trigger on the powermaster hopping it resolves the voltage dropping.

in your video you have what appears to be a extra red 4gauge going to fuse box where's it coming from?

all I've done ontop of stock is out of alt. to pos of battery, neg. on battery to car body, and alt. case to car body, the big 3.thanks
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-1

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-2

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-3

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-4

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-5

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-6

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-7

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-8

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-9

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
Old Jul 12, 2023 | 05:07 PM
  #1229  
5.7stroker's Avatar
TECH Addict
15 Year Member
Liked
Loved
Community Favorite
iTrader: (36)
 
Joined: Apr 2009
Posts: 2,358
Likes: 277
From: OH
Default

What kind of voltage are you getting at the alternator and how does it compare to what the leads on the battery show?
Reply
Old Jul 12, 2023 | 05:59 PM
  #1230  
badmfkr's Avatar
TECH Fanatic
20 Year Member
Photogenic
Liked
Loved
iTrader: (4)
 
Joined: Apr 2004
Posts: 1,378
Likes: 14
From: Atlanta, GA Ft. Walton Beach, FL
Default

Originally Posted by 5.7stroker
What kind of voltage are you getting at the alternator and how does it compare to what the leads on the battery show?
this sounds like a good way to test the orginal wiring.
so far just going by the GM inaccurate dash gauge. main problem is this needle goe's to the orange section when at a red light w/ AC on so I have to turn off AC, I think the coolant fans coming on drains the power.it's worst if the radio is on. I don't drive the TA at night so I can't comment on dimming headlights few times I have driven at night never noticed dimming.

today had the girl at Oriley auto parts test alt. she said the battery an alt. is fine alt. was putting out 84amps w/ AC on this a AD244 at 145amps so I'm assumming the alt. is on it's way out.

the weird thing is during the winter time when AC isn't used she charges fine at or just above the 12 O-clock position 13VDC.
in the morning when I cold crank her this needle goe's well over into the 14VDC area. but never way down into orange section which I think is around 8VDC.
I haven't once inserted a multimeter into the alt.s output of either voltage or current.tested atl.s output voltage w/ the GM gauge is inaccurate but it is at least letting me know there's a serious drain an keep it up you'll be riding on battery alone for a short trip. I've owned this car since 2000 and the charging sys has never been that great the big3 & the ad244 helped but still this is a issue. thanks
Reply
Old Jul 12, 2023 | 06:13 PM
  #1231  
sjsingle1's Avatar
TECH Senior Member
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (1)
 
Joined: Feb 2010
Posts: 6,761
Likes: 292
From: Fort Worth TX
Default

my mechman alt pretty much requires the alt be grounded....they say if it is not grounded to the battery.....the ground point becomes the bearings to the chassis

not all alts have a point to ground on the case
Reply
Old Jul 12, 2023 | 07:19 PM
  #1232  
badmfkr's Avatar
TECH Fanatic
20 Year Member
Photogenic
Liked
Loved
iTrader: (4)
 
Joined: Apr 2004
Posts: 1,378
Likes: 14
From: Atlanta, GA Ft. Walton Beach, FL
Default

Originally Posted by sjsingle1
my mechman alt pretty much requires the alt be grounded....they say if it is not grounded to the battery.....the ground point becomes the bearings to the chassis

not all alts have a point to ground on the case
I've grounded the alt. at it's mount bolt to the car body, I think you'r correct when saying alt.s case should be grounded at neg of battery.
even 01CamaroSSTx video screenshot says to ground to batterys negative.
I"ll add another thick 4gauge from alts case to Neg of battery. I have a like 4' of zero gauge isn't the thicker the better?or should I stick w/ 4gauge?

should I just leave the alt.s case to body. remember I'm still using the ad244 only 145amp.s thanks for charging advice my order hasn't been shipped yet so hopefully I can cancel it.


Reply
Old Jul 13, 2023 | 07:11 PM
  #1233  
01CamaroSSTx's Avatar
11 Second Club
10 Year Member
Liked
Loved
Community Favorite
iTrader: (3)
 
Joined: Feb 2015
Posts: 6,014
Likes: 2,294
From: Conroe, Texas
Default

Originally Posted by badmfkr
just pulled the trigger on the powermaster hopping it resolves the voltage dropping.

in your video you have what appears to be a extra red 4gauge going to fuse box where's it coming from?

all I've done ontop of stock is out of alt. to pos of battery, neg. on battery to car body, and alt. case to car body, the big 3.thanks
"Ground is Ground"

My alternator ground is from the altternator to the chassis, it does not go to negative on the battery. There is a chassis ground from the negative side of the battery though and I was having the same issues as you describe until I installed this new alternator. The reason for the three leads on the power wire is because I'm using a starter solenoid to engage the starter.
Reply
Old Jul 14, 2023 | 01:38 PM
  #1234  
badmfkr's Avatar
TECH Fanatic
20 Year Member
Photogenic
Liked
Loved
iTrader: (4)
 
Joined: Apr 2004
Posts: 1,378
Likes: 14
From: Atlanta, GA Ft. Walton Beach, FL
Default

^ should recieve the power master today. will install after next bch. trip. will report back then.

in your video where s the extra wire coming from to the fuse box? thanks for alt. advice
Reply
Old Jul 14, 2023 | 02:11 PM
  #1235  
01CamaroSSTx's Avatar
11 Second Club
10 Year Member
Liked
Loved
Community Favorite
iTrader: (3)
 
Joined: Feb 2015
Posts: 6,014
Likes: 2,294
From: Conroe, Texas
Default

One of three goes to the alternator, another one goes to the fuse block and the last one goes to the starter solenoid moutned to the wheel well which moves the power off of the starter and only sends power to the starter when keyed on by the ignition. Nice having the extra solenoid up top to connect a remote starter switch there instead of on the starter solenoid.
Reply
Old Jul 14, 2023 | 04:03 PM
  #1236  
tech@WS6store's Avatar
LS1Tech Premium Sponsor
iTrader: (2)
 
Joined: Apr 2016
Posts: 4,670
Likes: 250
Default

for anyone having fbody issues and want the powermaster, you need this and this

and youre set. we have the std finish in stock and soon black finish as well.

no questions necessary really. buy, install, drive.

BUT you will also need to look at your max rpm you're running on your engine. Any stock alternator wont live at 6800 and up even a few times. Youll either need a better alternator or bigger pulley or under drive crank then up the idle rpm.
Reply
Old Jul 14, 2023 | 05:41 PM
  #1237  
badmfkr's Avatar
TECH Fanatic
20 Year Member
Photogenic
Liked
Loved
iTrader: (4)
 
Joined: Apr 2004
Posts: 1,378
Likes: 14
From: Atlanta, GA Ft. Walton Beach, FL
Default

Originally Posted by 01CamaroSSTx
One of three goes to the alternator, another one goes to the fuse block and the last one goes to the starter solenoid moutned to the wheel well which moves the power off of the starter and only sends power to the starter when keyed on by the ignition. Nice having the extra solenoid up top to connect a remote starter switch there instead of on the starter solenoid.
Pls rephrase I could understand connection if I know to and from. thanks brother.
recieved the powermaster today it doe's have the ground post, instrucsions say to use exact same size wire for power an ground. only came in one box it was strofoamed inside but no outer box an this box was smushed.Dam hope it's good.
Reply
Old Jul 14, 2023 | 07:56 PM
  #1238  
01CamaroSSTx's Avatar
11 Second Club
10 Year Member
Liked
Loved
Community Favorite
iTrader: (3)
 
Joined: Feb 2015
Posts: 6,014
Likes: 2,294
From: Conroe, Texas
Default

To connect it like stock you already have threee power wires coming off the positive side of the battery. One goes to the alternator, the other to the fuse block and then one to the starter. For the ground just come off the alternator to the chassis and you'll be good to go. If you want to set it up like I did then I'll share some pictures and give you some more details on how I went about everything.

It's pretty simple really just make a jumper wire from the starter solenoid to the power side of the starter and purchase a solenoid to mount to the car near the battery. The small wire or PPL wire that connects to the starter solenoid now connects to the small post on the new solenoid. The power wire that originally went to the large post of the starter from the battery would now go to the side of the new solenoid and then the other side of the solenoid would have a power wire that runs back down to the large post on the starter.

I did go with 4 AWG for all three wires and from the new solenoid I kept 6 AWG to run down to the starter. I also purchased a new side post for this repair and the three wires where it went into the side post had to be separtaed and then braided together before soldering. The end of the lead had to be spread apart large enough to clamp down to the wires and I even soldered it to the braided lines because it would not wrap around and clamp. If I were to do it again I'd build the lead with two 6 AWG wires, one for the fuse block and the other for the starter solenoid and the 4 AWG for the alternator. It would not have been so difficult to get the wire bunch to clamp firmly into the side post with just one 4AWG wire. Hope this helps if you decide to go that route.

Last edited by 01CamaroSSTx; Jul 15, 2023 at 08:04 AM.
Reply
Old Jul 27, 2023 | 02:21 PM
  #1239  
badmfkr's Avatar
TECH Fanatic
20 Year Member
Photogenic
Liked
Loved
iTrader: (4)
 
Joined: Apr 2004
Posts: 1,378
Likes: 14
From: Atlanta, GA Ft. Walton Beach, FL
Default

Originally Posted by 01CamaroSSTx
To connect it like stock you already have threee power wires coming off the positive side of the battery. One goes to the alternator, the other to the fuse block and then one to the starter. For the ground just come off the alternator to the chassis and you'll be good to go. If you want to set it up like I did then I'll share some pictures and give you some more details on how I went about everything.

It's pretty simple really just make a jumper wire from the starter solenoid to the power side of the starter and purchase a solenoid to mount to the car near the battery. The small wire or PPL wire that connects to the starter solenoid now connects to the small post on the new solenoid. The power wire that originally went to the large post of the starter from the battery would now go to the side of the new solenoid and then the other side of the solenoid would have a power wire that runs back down to the large post on the starter.

I did go with 4 AWG for all three wires and from the new solenoid I kept 6 AWG to run down to the starter. I also purchased a new side post for this repair and the three wires where it went into the side post had to be separtaed and then braided together before soldering. The end of the lead had to be spread apart large enough to clamp down to the wires and I even soldered it to the braided lines because it would not wrap around and clamp. If I were to do it again I'd build the lead with two 6 AWG wires, one for the fuse block and the other for the starter solenoid and the 4 AWG for the alternator. It would not have been so difficult to get the wire bunch to clamp firmly into the side post with just one 4AWG wire. Hope this helps if you decide to go that route.
yeah I'd maybe do this solenoid in future image of how your's is connected would be nice. I know the 4th gens have grounds everywhere BC of all the electronics.

attempted to install new powermaster, when removing the alt.s mount bolts found the alt. bracket wasn't attached to block dam. how could I have missed that bracket bolt it is kindof deep inside bracket dam. heck I mite not even need a new alt. dam.

where can I get alt. bracket bolt? it's shorter than the alt.s bolts. I assume the threads are the same as the alt. mounts w/ 15mm head.thanks for bolt advice

edit: the folks at the dealership have this bolt $7.99 + tax
I'd rather get a used one at the junk yard of course they never have f-bodys is there another type GM vehical that uses the same type bracket an bolts. not that I cheap but have been wanting some other used stuff.

Last edited by badmfkr; Jul 27, 2023 at 02:34 PM.
Reply
Old Jul 27, 2023 | 02:42 PM
  #1240  
01CamaroSSTx's Avatar
11 Second Club
10 Year Member
Liked
Loved
Community Favorite
iTrader: (3)
 
Joined: Feb 2015
Posts: 6,014
Likes: 2,294
From: Conroe, Texas
Default

Call the dealership back and get the specifics on the bolt then go to Home Depot or a local parts store and pick something up that's close to the size slightly shorter but not longer or you will have to grind off some of the threads.
Reply



All times are GMT -5. The time now is 11:20 PM.

story-0
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-1
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-2
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-3
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-4
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-5
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-6
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-7
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-8
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-9
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE