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New CS Alternator, Battery Not Charging by nyranger6830
Started on: 07-04-2013 05:34 PM
Replies: 16 (665 views)
Last post by: nyranger6830 on 07-10-2013 03:17 PM
nyranger6830
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Report this Post07-04-2013 05:34 PM Click Here to See the Profile for nyranger6830Send a Private Message to nyranger6830Edit/Delete MessageReply w/QuoteDirect Link to This Post
Hello all,

Just installed a new CS alternator on my 2.8 and It wont charge the battery. This is a continuation of a battery charging problem that Ive been fighting since I had my stock alternator. The L wire is only hot with key on and S wire is hot all the time like it should be. The other wire is connected at the stud like its supposed to be. Battery is low to start since It hasn't been 100% charged since I bought it last month since the it keeps dieing from not being charged. Is there a fusible link or something that may be fried? If so, what do I look for? Im open to all suggestions.

Thanks

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Report this Post07-04-2013 08:24 PM Click Here to See the Profile for fierosoundClick Here to visit fierosound's HomePageClick Here to Email fierosoundSend a Private Message to fierosoundEdit/Delete MessageReply w/QuoteDirect Link to This Post
Make sure you have a good bulb in the Volt Meter



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[This message has been edited by fierosound (edited 07-04-2013).]

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nyranger6830
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Report this Post07-04-2013 08:47 PM Click Here to See the Profile for nyranger6830Send a Private Message to nyranger6830Edit/Delete MessageReply w/QuoteDirect Link to This Post
I'm thinking fusible link B is the cause

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rourke_87_T-Top
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Report this Post07-04-2013 11:40 PM Click Here to See the Profile for rourke_87_T-TopClick Here to Email rourke_87_T-TopSend a Private Message to rourke_87_T-TopEdit/Delete MessageReply w/QuoteDirect Link to This Post
I had an issue with fusible link forever, black capsule, inside the tin connection was powdered. If you cut it open, you will blow out the oxidized crap, remake it with new inline fuse.

[This message has been edited by rourke_87_T-Top (edited 07-04-2013).]

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nyranger6830
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Report this Post07-08-2013 08:23 PM Click Here to See the Profile for nyranger6830Send a Private Message to nyranger6830Edit/Delete MessageReply w/QuoteDirect Link to This Post
*UPDATE*

Returned my 2.8 back to stock for the weekend (Took of the supercharger) and the car ran fine and the alternator charged the battery and it never went down. So I threw the SC back on and same probelm again. Jump start and car starts at 13 volts and slowly goes down to around 8 and then it wants to give out. After i turn the car off the battery goes back to 11.75 and it stays there. Belt is tight and the clip is wired correctly as per instructions on the forum. I'm very confused! Does this have to do with a longer belt or something? I know that doesn't make any sense but thats really the only major difference. NEED HELP! haha

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Fieros......Gotta Love Em!

Dawn: My 86 GT!

NEED PARTS? I GOT EM!!

[This message has been edited by nyranger6830 (edited 07-08-2013).]

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trotterlg
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Report this Post07-08-2013 08:32 PM Click Here to See the Profile for trotterlgClick Here to Email trotterlgSend a Private Message to trotterlgEdit/Delete MessageReply w/QuoteDirect Link to This Post
If the belt is the major difference what are the minor differences? Larry
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nyranger6830
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Report this Post07-08-2013 09:21 PM Click Here to See the Profile for nyranger6830Send a Private Message to nyranger6830Edit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by trotterlg:

If the belt is the major difference what are the minor differences? Larry


Well Im using a different ECM, and I have 2 idler pulleys setup to direct the belt around the SC pulley:

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Report this Post07-08-2013 09:40 PM Click Here to See the Profile for trotterlgClick Here to Email trotterlgSend a Private Message to trotterlgEdit/Delete MessageReply w/QuoteDirect Link to This Post
Well, if the belt turns the alternator the same direction then I would run it with the other ECM and see if it charges. Unless that big blue wire is supposed to be hooked to something important. Larry

[This message has been edited by trotterlg (edited 07-08-2013).]

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nyranger6830
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Report this Post07-08-2013 09:55 PM Click Here to See the Profile for nyranger6830Send a Private Message to nyranger6830Edit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by trotterlg:

Well, if the belt turns the alternator the same direction then I would run it with the other ECM and see if it charges. Unless that big blue wire is supposed to be hooked to something important. Larry



Sorry Ignore That its an Old Picture! I was in the middle of hooking stuff up at the time haha

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Fieros......Gotta Love Em!

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Report this Post07-09-2013 01:04 AM Click Here to See the Profile for trotterlgClick Here to Email trotterlgSend a Private Message to trotterlgEdit/Delete MessageReply w/QuoteDirect Link to This Post
So, lets see....................only one thing different and one way works and one way does not work. what could it be?????????????????????
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nyranger6830
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Report this Post07-09-2013 01:12 AM Click Here to See the Profile for nyranger6830Send a Private Message to nyranger6830Edit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by trotterlg:

So, lets see....................only one thing different and one way works and one way does not work. what could it be?????????????????????

Dude spare me the jokes OK. Obviously when I posted this I couldve answered my own question if the problem was that simple.
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Report this Post07-09-2013 01:18 AM Click Here to See the Profile for trotterlgClick Here to Email trotterlgSend a Private Message to trotterlgEdit/Delete MessageReply w/QuoteDirect Link to This Post
Well, I am old and some things seem simple to me, but I guess this is a complicated problem I just too old to understand fully. Larry
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nyranger6830
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Report this Post07-09-2013 01:20 AM Click Here to See the Profile for nyranger6830Send a Private Message to nyranger6830Edit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by trotterlg:

Well, I am old and some things seem simple to me, but I guess this is a complicated problem I just too old to understand fully. Larry


OK then Larry what exactly is your conclusion?

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Report this Post07-09-2013 01:28 AM Click Here to See the Profile for trotterlgClick Here to Email trotterlgSend a Private Message to trotterlgEdit/Delete MessageReply w/QuoteDirect Link to This Post
Well you say you change one thing, the computer, with one computer the car charges, with the ohter it does not. Now either one computer works and the other does not or you are mistaken about what changes were made. If every thing is the same except the computer then I would say it is the problem. But then I am old and drink a lot. Larry
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Report this Post07-09-2013 07:13 AM Click Here to See the Profile for olejoedadClick Here to Email olejoedadSend a Private Message to olejoedadEdit/Delete MessageReply w/QuoteDirect Link to This Post
What ECM are you using? The 2.8 ECM does not control the alternator regulator. The charging system is internally regulated. Are you sure you have IGN voltage on L?
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nyranger6830
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Report this Post07-09-2013 09:28 PM Click Here to See the Profile for nyranger6830Send a Private Message to nyranger6830Edit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by olejoedad:

What ECM are you using? The 2.8 ECM does not control the alternator regulator. The charging system is internally regulated. Are you sure you have IGN voltage on L?


Yes I double checked today and voltage on L with key on

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Fieros......Gotta Love Em!

Dawn: My 86 GT!

NEED PARTS? I GOT EM!!

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nyranger6830
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Report this Post07-10-2013 03:17 PM Click Here to See the Profile for nyranger6830Send a Private Message to nyranger6830Edit/Delete MessageReply w/QuoteDirect Link to This Post
I changed the battery today and now the battery stays at 12 volts the whole time at idle. Its great that on and off, the battery holds a constant voltage. But unlike any typical alternator, the battery is not at around 13-14 volts at idle. Its like the alternator is half working or something?

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Fieros......Gotta Love Em!

Dawn: My 86 GT!

NEED PARTS? I GOT EM!!

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