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#185809 - 10/05/05 10:36 PM My Electrical Nightmare  
Joined: Jun 2005
Posts: 62
RyankMCSS85 Offline
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RyankMCSS85  Offline
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Joined: Jun 2005
Posts: 62
Milford, MI
Ok where do I start...
I did a motor swap on my monte making it non-computer controlled. And since then the car cannot hold a charge for anything. Since then Ive went through 3 batteries 2 alternators and a starter. And still the battery is dead after about 3 days. So we went to test my alternator today by unplugging the battery while the car was running and it kept dying. But my alternator works and we have even switched my buddies alternator with mine. We have no clue what the problem could be Is there any chance the pin that connects into the side of the alternator is giving no juice. Please help im at a loss for words and ready to sell the car


white 85 monte ss with a 335 stroker, flowmaster th350, 3.73 posi
GO VIKES!
#185810 - 10/05/05 10:54 PM Re: My Electrical Nightmare  
Joined: Jun 2005
Posts: 62
RyankMCSS85 Offline
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RyankMCSS85  Offline
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Joined: Jun 2005
Posts: 62
Milford, MI
anyone?


white 85 monte ss with a 335 stroker, flowmaster th350, 3.73 posi
GO VIKES!
#185811 - 10/05/05 11:08 PM Re: My Electrical Nightmare  
Joined: Jun 2005
Posts: 62
RyankMCSS85 Offline
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RyankMCSS85  Offline
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Joined: Jun 2005
Posts: 62
Milford, MI
ttt


white 85 monte ss with a 335 stroker, flowmaster th350, 3.73 posi
GO VIKES!
#185812 - 10/05/05 11:36 PM Re: My Electrical Nightmare  
Joined: Oct 2004
Posts: 78
bkrossch Offline
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bkrossch  Offline
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Joined: Oct 2004
Posts: 78
Madison, WI
There could be a variety of issues causing your electrical problem.

1.) Your alternator charges at the appropriate voltage but does not provide enough current. In this case, the voltage regulator or alternator would have to be replaced (unlikely as you said you did this a few times already)

2.) You have a "ground loop" somewhere in your car which is causing the battery to drain. This could be due to a broken ground wire between your block and frame, or frame and body, or that your car may actually have two separate grounds which are aphysical. As an example, measure the potential between the ground on your gauge cluster, for example, and the negative terminal of the battery. If you read more that a few millivolts, you have a problem.

3.) If your car keeps dying when it is running and you remove the alternator, and you believe the alternator is good, then you can start to reduce down the possibilities of why it stalled. Did it stop getting spark? If so, you're not getting voltage to your ignition system...etc. etc. etc.

There are so many parts to the electrical system that could have problems...you just have to start narrowing it down one by one, system by system, wire by wire. If you do it meticulously, I'm sure you'll find the offending wire/short/ground that is giving you your problem!

A good mechanic would know where to start - maybe Randy or one of the other guys on the board can give you some advice. A lot of guys here have a lot of experience repairing these cars - I haven't worked on mine enough (or had enough problems with it) to give you a starting point. In the Powertrain Controls Lab where I work at UW, I know we ran into a problem in the TPS circuit of a new Ford motor which mysteriously changed its ground depending on whether or not the fuel pump was on. This being a brand new 2006 Duratec 3 liter. It happens I guess.

-Brian


Brian
1986 Monte Carlo SS
My Homepage
#185813 - 10/05/05 11:44 PM Re: My Electrical Nightmare  
Joined: Jun 2003
Posts: 2,604
beachbum29 Offline
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beachbum29  Offline
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Joined: Jun 2003
Posts: 2,604
Upstate, Ny
2 questions... well, actually 3..

did the car charge ok prior to changing the engine, and taking off the computer stuff?

are you sure you've got all the wires hooked up in they're proper locations?

did you chop out the harness, or leave it intact so you tie it up out of the way? (just in case you missed something??)


1978 Malibu 355/4 speed/posi/gauge's soon to be BBC....
1988 Monte SS (getting 355 from 'bu)
2003 HD softail...... new hotrod...
2000 Chevy Silverado 1500 ext cab..
http://www.beachbumstoybox.zoomshare.com/
#185814 - 10/05/05 11:52 PM Re: My Electrical Nightmare  
Joined: Jun 2005
Posts: 62
RyankMCSS85 Offline
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RyankMCSS85  Offline
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Joined: Jun 2005
Posts: 62
Milford, MI
thanks guys....
The car chardged fine b4 the motor swap when i had the car stock. IM pretty sure i have everything in the right place even had a mechanic look. I have the wires just hanging out of the way i do not have the harness removed


white 85 monte ss with a 335 stroker, flowmaster th350, 3.73 posi
GO VIKES!
#185815 - 10/06/05 12:03 AM Re: My Electrical Nightmare  
Joined: Jun 2005
Posts: 62
RyankMCSS85 Offline
Member
RyankMCSS85  Offline
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Joined: Jun 2005
Posts: 62
Milford, MI
would the ground on the block cause my alternator to not work


white 85 monte ss with a 335 stroker, flowmaster th350, 3.73 posi
GO VIKES!
#185816 - 10/06/05 12:25 AM Re: My Electrical Nightmare  
Joined: Jun 2003
Posts: 2,604
beachbum29 Offline
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beachbum29  Offline
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Joined: Jun 2003
Posts: 2,604
Upstate, Ny
i've seen different things go weird when that ground isn't hooked up.. . not sure if that would effect charging, but it can't be helping.


1978 Malibu 355/4 speed/posi/gauge's soon to be BBC....
1988 Monte SS (getting 355 from 'bu)
2003 HD softail...... new hotrod...
2000 Chevy Silverado 1500 ext cab..
http://www.beachbumstoybox.zoomshare.com/
#185817 - 10/06/05 05:46 AM Re: My Electrical Nightmare  
Joined: Sep 2005
Posts: 57
Lonewolfe Offline
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Lonewolfe  Offline
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Joined: Sep 2005
Posts: 57
Macon,Ga
First off did you unhook or modify anything from the alt. circuit ? Second,what about you charge back wire from the alt.to battery?Is the little ground wire the negative cable still hooked up on your inner fender?


What is it that most people don't have? Answer....POWERS OF OSBERVATION.
#185818 - 10/06/05 09:47 AM Re: My Electrical Nightmare  
Joined: Jun 2005
Posts: 62
RyankMCSS85 Offline
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RyankMCSS85  Offline
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Joined: Jun 2005
Posts: 62
Milford, MI
No we didnt modify anything from the circuit. And everything is hooked up properly including my negative ground


white 85 monte ss with a 335 stroker, flowmaster th350, 3.73 posi
GO VIKES!
#185819 - 10/06/05 06:06 PM Re: My Electrical Nightmare  
Joined: Jun 2005
Posts: 62
RyankMCSS85 Offline
Member
RyankMCSS85  Offline
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Joined: Jun 2005
Posts: 62
Milford, MI
anybody else with any suggestions im lost here


white 85 monte ss with a 335 stroker, flowmaster th350, 3.73 posi
GO VIKES!
#185820 - 10/06/05 08:10 PM Re: My Electrical Nightmare  
Joined: Jul 2005
Posts: 152
IndyJimW Offline
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IndyJimW  Offline
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Joined: Jul 2005
Posts: 152
Indianapolis,IN
Most vehicles equipped with an alternator will die if you disconnect the battery. I don't think it has anything to do with the battery, alternator etc. or even the engine swap.
You probably have a circuit on that is draining the battery. Disconnect the positive battery cable and hook up a DC voltmeter in-line, unplug electrical devices or pull the fuses until the meter drops from 12 volts to 0.


"They'll get my gun when they pry it from my cold, dead fingers. But that's not exactly 'Plan A'."
'87 Avanti - Heart of a SS, Body and Soul of a Studebaker!
http://www.picturetrail.com/gallery/view?p=999&gid=8110297&uid=3920570&members=1
#185821 - 10/07/05 12:57 AM Re: My Electrical Nightmare  
Joined: Dec 1999
Posts: 4,378
SSteve Offline
15+ Year
SSteve  Offline
15+ Year
Member

Joined: Dec 1999
Posts: 4,378
PA
do you have the alt wired up correctly? there isa wire on it that goes from top to back



86 Monte Carlo SS,Stock L69 H.O.
200 4 R Trans with B&M Trans Pak stage 2 mods 15.80 @ 84 mph
#185822 - 10/07/05 01:36 AM Re: My Electrical Nightmare  
Joined: Mar 2004
Posts: 254
85SSMan Offline
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85SSMan  Offline
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Joined: Mar 2004
Posts: 254
Wichita, Kansas
If you can get your car to Advance Auto Parts, or a parts store that can test batteries in the car, you will be able to figure out what is causing your drain. If you are positive you have everything hooked up right, then you have something draining you battery. Go have your car tested, The machine that runs that test has a voltmeter that just clips over the battery cable (like a timing light on the plug wire), with the car off, and igniition off there should be little to no volts reading (.0 -- .03) is acceptable. If it is more than that you have something draining you battery, with the battery tester still hooked up start pulling fuses one by one, after each one see in the voltage drops to the acceptable level, if no change put the fuse back and try the next one, when the voltage finally drops you have found the circut that has a fault. Search the circut for bad wires and repair. In all my years of Parts Sales a draining problem is almost always a radio, or something of that nature that has been installed wrong.

Chris



1985 Monte SS, Rebuilt L69 with TPI. 200-4R Tranny. 951 Modine with TPI duel fans. True 2 1/4 Flowmaster Duals. B.F.H. made dual hump crossmember. Stock Suspension, interior, and body.
SOLD TO INTMDATR3 ON 03/04/06
#185823 - 10/07/05 03:02 AM Re: My Electrical Nightmare  
Joined: Jun 2005
Posts: 62
RyankMCSS85 Offline
Member
RyankMCSS85  Offline
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Joined: Jun 2005
Posts: 62
Milford, MI
Ok guys I appreciate all your advice now its time to get to work


white 85 monte ss with a 335 stroker, flowmaster th350, 3.73 posi
GO VIKES!
#185824 - 10/07/05 06:52 PM Re: My Electrical Nightmare  
Joined: Mar 2003
Posts: 622
Fraser's 87 SS Offline
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Fraser's 87 SS  Offline
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Joined: Mar 2003
Posts: 622
Brownsburg, Indiana
The easiest way to see where power is being drained from that I know of is to disconnect one side of your battery, take a volt meter and bridge the two connections so that the current is going through the volt meter and giving you a proper reading. have a friend go and start pulling fuses one by one replacing them if there is no change in voltage. when you do this you should notice a drop in voltage when you pulled the fuse on the bad sector. then you can just trace down what is all on that sector and then check the wires to and from.

I helped do this on a buddy's car and we eventually fixed it.

Hope This Helps
Patrick


zx14 kawi currently & an 81 Blue Bu

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