Big 3 Noise problem..help?
Hey guys,
I just finished the big 3 for my new install and now I have a whine coming from the engine. My speakers/deck/etc. aren't even hooked up yet, so this can't be a good sign of things to come! I did a search, but most topics refer to noise through the system. I didn't have any whining before I did the big 3.
The car is a 95 Regal. The alt. is a new 200A HO built by a CCA board member. I ran 0 awg from the battery directly to the frame in front of it (near the rad), then from the alt. mounting bolt to the front frame (same piece as the battery ground, about 3 ft. apart) and then alt. pos. to battery. I've been putting a lot of time into this install so this is really bugging me.
I really want this noise gone and hopefully have my system going within the next few days. Any help will be extremely appreciated. Cheers.
[ November 12, 2005, 10:14 PM: Message edited by: timmyturtle ]
I just finished the big 3 for my new install and now I have a whine coming from the engine. My speakers/deck/etc. aren't even hooked up yet, so this can't be a good sign of things to come! I did a search, but most topics refer to noise through the system. I didn't have any whining before I did the big 3.
The car is a 95 Regal. The alt. is a new 200A HO built by a CCA board member. I ran 0 awg from the battery directly to the frame in front of it (near the rad), then from the alt. mounting bolt to the front frame (same piece as the battery ground, about 3 ft. apart) and then alt. pos. to battery. I've been putting a lot of time into this install so this is really bugging me.
I really want this noise gone and hopefully have my system going within the next few days. Any help will be extremely appreciated. Cheers.
[ November 12, 2005, 10:14 PM: Message edited by: timmyturtle ]
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You say you have a whine coming from your engine. As in a physical whine while standing out side the car? I assume this as it seems you have no audio system in the car right now.
If so - I would also suspect the new alternator and probably the bearing in it for two reasons: 1) It sounds like the only rotating part you just replaced and 2) newer GM alternators are prone to bearing problems.
If so - I would also suspect the new alternator and probably the bearing in it for two reasons: 1) It sounds like the only rotating part you just replaced and 2) newer GM alternators are prone to bearing problems.
Yes, I'm quite sure the noise is from the alternator. I've physically stuck my head in and put my ear to it (and I can hear it from the cabin anyway). But it's not a stock GM alt (see above). And I've only noticed it immediately after installing the big 3; not before that. It is a HO alt, so perhaps some noise is expected. This is frustrating though, as it seems it could be any number of things (diode, rectifier, ground loop, bearing, bad battery....)
500 Watt CAFz'r
Joined: Apr 2004
Posts: 756
Disconnect the regulator plug to the alternator. Start the engine.
If the noise is gone, then the noise is the alternator working it's hiney off due to a discharged battery, or some part in the altrenator is just a noisy part
If the noise is NOT gone, then it's a bearing, or some other unrelated thing.
If the noise is gone, then the noise is the alternator working it's hiney off due to a discharged battery, or some part in the altrenator is just a noisy part
If the noise is NOT gone, then it's a bearing, or some other unrelated thing.
