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  #1  
Old 03-27-2014, 12:49 AM
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bomber22 bomber22 is offline
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Default dim head lights at idle

i have recently noticed that when i come to a complete stop in my 2000 tundra,my head lights will dim abit.(now at idle the volt meter drops to about 12 volts).also noticed the idle was low about 350-400. thinking that the voltage was low i changed the alternator,(i will post a thread on that).alternator was no help thinking i have a bad new one,go back to the auto parts store and have them test the new one and my old one, both pass.
log story short, i put every thing back together and went for the low idle problem, cleaned my maf sensor and the throttle body,now at idle 1000rpms, every thing seems fine, the rpms will come down when the ecu resets, i hope.
did this today ,so i hope bye running the truck tommarow it will smooth out , meaning about 5 to 600 rpms.
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Old 03-31-2014, 03:32 PM
Blazerpounds Blazerpounds is offline
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How did it turn out?


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Old 04-01-2014, 09:35 AM
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bomber22 bomber22 is offline
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everything seems normal,when i start the truck now it reads about 750-to 850 rpms, then kicks down to around 500-550 for normal driving. no dim lights or voltage drop at idle.
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Old 04-01-2014, 02:55 PM
Blazerpounds Blazerpounds is offline
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Did you keep the new alternator on? Possible you had a bad voltage regulator, or bad wiring for your alternator.


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Old 04-01-2014, 10:17 PM
Tacomedic Tacomedic is offline
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A battery on it's way out could definitely cause those symptoms too. Glad to hear it's fixed.
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Old 04-02-2014, 08:00 AM
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no, thought it might have been bad from stock. had them test the new one and my old one, both passed. got my money back and put the old one back in.


battery is a optinum red top 1 1/2 years old,has a really good charge on it.
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