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Electrical Gremlins by RilesOfSmiles
Started on: 12-07-2013 02:29 PM
Replies: 10 (250 views)
Last post by: Francis T on 12-24-2013 11:52 PM
RilesOfSmiles
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Report this Post12-07-2013 02:29 PM Click Here to See the Profile for RilesOfSmilesClick Here to Email RilesOfSmilesSend a Private Message to RilesOfSmilesEdit/Delete MessageReply w/QuoteDirect Link to This Post
So my brother and dad changed the alternator on their 88 formula because it wasn't charging the battery. Had a red light on the volt gauge and showed 11.3 volts on the battery when it was running. So they put a new one in and they made the mistake of hooking up the battery before reconnecting the alternator. When they tried to attach the bottom wire to the alternator post they said it made a huge spark and sizzled and broke the connector in half. So they took the battery out then reattached the alternator and then put the battery in. The car started fine but the battery is still not charging! Plus the alternator was making this loud electrical humming noise that kept getting louder.

I think its safe to assume they fried the new alternator. What do you guys think?

[This message has been edited by RilesOfSmiles (edited 12-07-2013).]

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tebailey
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Report this Post12-07-2013 02:35 PM Click Here to See the Profile for tebaileyClick Here to Email tebaileySend a Private Message to tebaileyEdit/Delete MessageReply w/QuoteDirect Link to This Post
Yup, fried it.
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NetCam
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Report this Post12-07-2013 03:25 PM Click Here to See the Profile for NetCamClick Here to visit NetCam's HomePageSend a Private Message to NetCamEdit/Delete MessageReply w/QuoteDirect Link to This Post
There's a very good chance you've fried it, but you could probably take it into your nearest parts store and have it tested. Most will do it for free, and it's worth finding out for sure before buying another new one.
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newfiejeff
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Report this Post12-07-2013 05:23 PM Click Here to See the Profile for newfiejeffClick Here to Email newfiejeffSend a Private Message to newfiejeffEdit/Delete MessageReply w/QuoteDirect Link to This Post
I hate those d%mn expensive lessions, sounds like its fried. What is the voltage on the battery, I know with mine if the battery is not charged the alternator will not charge, but after I charge it the alternator works fine. If that makes sense.
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falcon_ca
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Report this Post12-10-2013 09:14 PM Click Here to See the Profile for falcon_caClick Here to Email falcon_caSend a Private Message to falcon_caEdit/Delete MessageReply w/QuoteDirect Link to This Post
Make sure your brown wire is not damaged. You need voltage on it to activate the alternator.

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[This message has been edited by falcon_ca (edited 12-10-2013).]

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84fiero123
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Report this Post12-12-2013 10:04 AM Click Here to See the Profile for 84fiero123Click Here to Email 84fiero123Send a Private Message to 84fiero123Edit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by RilesOfSmiles:

So my brother and dad changed the alternator on their 88 formula because it wasn't charging the battery. Had a red light on the volt gauge and showed 11.3 volts on the battery when it was running. So they put a new one in and they made the mistake of hooking up the battery before reconnecting the alternator. When they tried to attach the bottom wire to the alternator post they said it made a huge spark and sizzled and broke the connector in half. So they took the battery out then reattached the alternator and then put the battery in. The car started fine but the battery is still not charging! Plus the alternator was making this loud electrical humming noise that kept getting louder.

I think its safe to assume they fried the new alternator. What do you guys think?



Take it back to where you got it and have them test it, do not, I repeat do not tell them what you did, tell them you did it the right way and its just not charging. get a new one and install it. I know its not right, but it will save you or them the cost of a new one.

Steve

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CarverToo
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Report this Post12-12-2013 08:57 PM Click Here to See the Profile for CarverTooClick Here to Email CarverTooSend a Private Message to CarverTooEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by 84fiero123:


Take it back to where you got it and have them test it, do not, I repeat do not tell them what you did, tell them you did it the right way and its just not charging. get a new one and install it. I know its not right, but it will save you or them the cost of a new one.

Steve



In before the trash can.

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RilesOfSmiles
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Report this Post12-24-2013 05:22 PM Click Here to See the Profile for RilesOfSmilesClick Here to Email RilesOfSmilesSend a Private Message to RilesOfSmilesEdit/Delete MessageReply w/QuoteDirect Link to This Post
So UPDATE!

Turns out the alternator is fine and its just not charging. Anyone have any ideas? It makes this loud buzzing noise which gets louder and louder the longer it runs. Red light on the volt gauge and multimeter still shows it isn't charging. Could something else have gotten fried? I'm not really familiar with the Fiero's charging system.
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Neils88
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Report this Post12-24-2013 07:33 PM Click Here to See the Profile for Neils88Click Here to Email Neils88Send a Private Message to Neils88Edit/Delete MessageReply w/QuoteDirect Link to This Post
Just wanted to confirm...you took the alternator in and had it tested?

Does the alternator light on the dash come on with the key? If the bulb is burnt out, then the alternator won't work.

Have you had the battery tested? You should charge it fully before running the car. If the battery is dead or damaged, then this may stop the alternator from working. Running with a bad battery for too long may also damage the voltage regulator.
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RilesOfSmiles
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Report this Post12-24-2013 07:43 PM Click Here to See the Profile for RilesOfSmilesClick Here to Email RilesOfSmilesSend a Private Message to RilesOfSmilesEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Neils88:

Just wanted to confirm...you took the alternator in and had it tested?

Does the alternator light on the dash come on with the key? If the bulb is burnt out, then the alternator won't work.

Have you had the battery tested? You should charge it fully before running the car. If the battery is dead or damaged, then this may stop the alternator from working. Running with a bad battery for too long may also damage the voltage regulator.


Yeah we took the alternator in to get it tested and it tested fine. When the engine is running the light is on and the battery shows 12.4 volts. We had to replace the the small connector that goes on the nut on the alternator (the one covered by the rubber boot) because the old one literally blew apart. As far as I can tell the alternator is charging but the power it generates isn't reaching the battery. And then there is the matter of that unknown electrical humming coming from it. I don't let the car run too long for fear of frying something.
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Francis T
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Report this Post12-24-2013 11:52 PM Click Here to See the Profile for Francis TClick Here to visit Francis T's HomePageClick Here to Email Francis TSend a Private Message to Francis TEdit/Delete MessageReply w/QuoteDirect Link to This Post
Get it tested! If it's NG and the new one overcharges, make sure the small wire with the push-on connected on you alt is good and the connector is clean.

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