just replaced alternator, now my car won't start (1995 s14 with sr20det redtop)

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wadiad
Posts: 148
Joined: Thu May 11, 2006 2:42 pm
Car: 1991 240sx hatch - s15 sr20det

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The alternator in my car was inadequate to power all my accessories plus headlights, etc, especially at idle, so i replaced it with a 140 amp (stock rebuilt ) alt. from a 1990 240sx. I ordered it with a 5-groove pulley, the plug fit right in, and it bolted in with minimal modifications. In addition to the plug, there were 2 other wires - a red one (which had a very similar location to attach to on the new alt.) and a black one, i guess a ground, which i just attached to any available hole on the new alt. with the correct-sized thread. I can't see where i could have messed anything up.

At one point i was trying to remove the pulley to swap the old one on (old one is bigger), and i clamped the pulley in rubber then i was hammering a socket wrench to try to break that nut loose. I gave up when i saw that was going nowhere. The thought crossed my mind that the jolts could have damaged something, but i sort of doubt it. The alternator itself was still.

When i went to start the car, there is not even a clicking sound from the starter. The car has some electric, but not much. No heater fan, the clock on the dash has light but does not display digits (it was working fine before). I would really appreciate any help as i am stuck without a car right now.



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smokin240
Posts: 797
Joined: Fri Apr 30, 2004 3:55 pm

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Well the alternator doesn't have power stored. So if you last left the battery dead, then it's still dead. Meaning your going to have to charge it back up so the alternator can maintain the charge. But if the battery still runs out of power quickly, then you've got alternator problems.

wadiad
Posts: 148
Joined: Thu May 11, 2006 2:42 pm
Car: 1991 240sx hatch - s15 sr20det

Post

The battery was not dead, nor is it dead now. My lights have power, my alarm has power, and some other accessories have power. However it seems to me none of the power is getting to the starter. I don't think it's a problem with the alternator (the car should start even if the alt. is completely dead). But somehow a link between the battery and something else got disrupted and now i can't start it. The problem is i don't have a clue where/what got disrupted. It seemed like a very simple job to me, with nothing to really get disturbed.The car does not jump start from another car either so i'm certain it's not the battery. Any other suggestions?

wadiad
Posts: 148
Joined: Thu May 11, 2006 2:42 pm
Car: 1991 240sx hatch - s15 sr20det

Post

I've learned a little more about my problem and reposted what i think is a better question with a more accurate description. Please have a look at it here:

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Thanks.


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