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2003 Nissan Altima Lights Blinking/Pulsing
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johnnycashish
New User
Apr 14, 2009, 7:39 AM
Post #1 of 2
(2360 views)
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2003 Nissan Altima Lights Blinking/Pulsing
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Hello! I’m hoping someone can help me with my mystery ailment. I read previous posts and didn't find my "exact situation". I have a 2003 Nissan Altima 3.5 with 70,000 miles on it. My lights (headlights, internal lights, dashboard, radio display, etc.) are pulsing/blinking when the engine is running. They seem to pulse with engine revs. They otherwise work fine.
8 months ago my oil change guy noticed my battery (original factory install) was not keeping a good charge and recommended that I replace it. Of course, I didn’t take him up on his advice… So two days ago the light pulsing started and I assumed that it might be the battery (which I needed, anyway). I installed a new battery last night but the lights are still blinking.
I almost wish the lights were “completely dead” so I would have a better idea about a fuse or something. The blinking isn’t random – it’s a pattern – so I don’t think it’s a short. There isn’t any engine clicking or anything and I haven’t had any problems starting the car. No “check XYZ” lights are lit up on my dash. I haven’t installed a new anti-theft device or anything like that. I have had satellite radio in the car for three years with no issues.
The headlights (and interior lights) aren’t dim but the blinking is driving me crazy. And I'm worried that at some point the engine will have problems and I'll get stranded somewhere. If anyone can point me in the right direction I would appreciate it. Thanks!!
JC
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Loren Champlain Sr
Veteran
/ Moderator
Apr 14, 2009, 3:25 PM
Post #2 of 2
(2359 views)
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Re: 2003 Nissan Altima Lights Blinking/Pulsing
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Johnnycashish? The 'pulsating' of the lights points me to a voltage regulator problem. Have the charging system tested. Unfortunately, the regulator is internal in the alternator. If it turns out that this is the problem, it's usually cheaper to buy a reman. alternator than to buy and have installed a new regulator. But, have it checked, first.
Loren
SW Washington
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