Bad alternator? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

s13_st · 08-23-2014, 07:32 PM

I recently installed an sr20det, I have a new odyssey p 680 battery. The needles on the gauges jump like crazy when I shift, car has rough and high idle, when I turn on the accessory (headlights, etc.) Everything flickers and car dies a couple seconds later when I'm not driving. Is this a bad/weak alternator issue?

Mildviolence · 09-03-2014, 10:30 PM

Sound's like it. Just take it in and get it tested.

omgwtf · 10-22-2014, 03:33 AM

Sounds like you might have a grounding issue as well. id check all of your ground and clean all your terminals and battery posts.

97nismo · 10-22-2014, 04:41 AM

That battery isn't strong enough from my experience...I upgraded to miata battery and it helped. You really need to get a full size battery and move it to the trunk. Also get a multimeter crank the car and see if you are staying above 12 volts when you turn on the lights if it drops then alternator isn't charging. If your dash lights up brake and battery then it could also be a good idication it's the alternator.
If it's a ground I can't help you...if you are running an atmospheric bov on a stock sr then that could explain your dying and idling funny issue

08-23-2014, 07:32 PM	#1
s13_st Leaky Injector Join Date: Mar 2014 Location: socal Age: 26 Posts: 66 Trader Rating: (0) Feedback Score: 0 reviews	Bad alternator? I recently installed an sr20det, I have a new odyssey p 680 battery. The needles on the gauges jump like crazy when I shift, car has rough and high idle, when I turn on the accessory (headlights, etc.) Everything flickers and car dies a couple seconds later when I'm not driving. Is this a bad/weak alternator issue?

10-22-2014, 04:41 AM	#4
97nismo Nissanaholic! Join Date: Oct 2008 Location: Asheville Posts: 2,130 Trader Rating: (53) Feedback Score: 53 reviews	That battery isn't strong enough from my experience...I upgraded to miata battery and it helped. You really need to get a full size battery and move it to the trunk. Also get a multimeter crank the car and see if you are staying above 12 volts when you turn on the lights if it drops then alternator isn't charging. If your dash lights up brake and battery then it could also be a good idication it's the alternator. If it's a ground I can't help you...if you are running an atmospheric bov on a stock sr then that could explain your dying and idling funny issue __________________ Feedback: http://zilvia.net/f/itrader.php?u=78978

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09-03-2014, 10:30 PM	#2
Mildviolence Leaky Injector Join Date: Nov 2013 Location: Iowa Posts: 139 Trader Rating: (3) Feedback Score: 3 reviews	Sound's like it. Just take it in and get it tested.

10-22-2014, 03:33 AM	#3
omgwtf Zilvia Member Join Date: Mar 2012 Location: South Delaware Age: 32 Posts: 221 Trader Rating: (2) Feedback Score: 2 reviews	Sounds like you might have a grounding issue as well. id check all of your ground and clean all your terminals and battery posts.