An alternator replacement question

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Old Dec 20, 2011 | 12:59 AM
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junteschan's Avatar
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An alternator replacement question

My 2000 TL comes equipped oem with a 105 amp Denso alternator and soon will be replacing it due to high mileage just before it gives me a problem.
Anybody here install a Bosch equivalent and are they any good at all?
Appreciate any info...thanks.
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Old Dec 20, 2011 | 08:25 AM
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From: Appleton WI
Originally Posted by junteschan
My 2000 TL comes equipped oem with a 105 amp Denso alternator and soon will be replacing it due to high mileage just before it gives me a problem.
Anybody here install a Bosch equivalent and are they any good at all?
Appreciate any info...thanks.
What do you mean before it gives you a problem? Is it failing now? Mine has close to 500k miles on it and still going strong
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Old Dec 20, 2011 | 10:01 AM
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Why would you replace it? Are you experiencing charging issues or electrical problems?
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Old Dec 20, 2011 | 11:10 AM
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stick with denso for a stock TL,,they make most of the honda parts

if you are running 600+ watts stereo then you may want a higher output alt and better battery
BUT
as said above- whats wrong with it now? noise from bearing? (use mechanics stethascope to ck) charging seems off? headlights dim at idle

most parts stores or battery store will run a full charging system test for free
Tells alt output amps volts, batt cable condition,,battery condition

You may only need a ground wire kit from the dealer- replaces batt neg cable and several smaller engine to frame grounds,, that rust away or corrode under the bolt
That causes poor electrical travel--ground is all important in wiring
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Old Dec 20, 2011 | 11:13 AM
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noise in the alternator area is often the ac belt tensioner failing
mine went at 85kmiles,,,been several reports on here recently= and you know how things run in sets,,,,
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Old Dec 20, 2011 | 11:19 PM
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Originally Posted by fsttyms1
What do you mean before it gives you a problem? Is it failing now? Mine has close to 500k miles on it and still going strong
I mean just before the alternator conks out and the engine shuts down while travelling to and from work and unnecessarily incurring surprise expenses when all I need to spend on this preventive maintenance is
just 20%.

500,000 miles on your original denso alternator...are you serious?
If you would confirm this, then I need not worry at all.
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Old Dec 20, 2011 | 11:22 PM
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Originally Posted by totaledTL
Why would you replace it? Are you experiencing charging issues or electrical problems?
I do not have any electrical problems right now but just anticipating one due to my high mileage as I earlier mentioned.
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Old Dec 20, 2011 | 11:30 PM
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Originally Posted by 01tl4tl
stick with denso for a stock TL,,they make most of the honda parts

if you are running 600+ watts stereo then you may want a higher output alt and better battery
BUT
as said above- whats wrong with it now? noise from bearing? (use mechanics stethascope to ck) charging seems off? headlights dim at idle

most parts stores or battery store will run a full charging system test for free
Tells alt output amps volts, batt cable condition,,battery condition

You may only need a ground wire kit from the dealer- replaces batt neg cable and several smaller engine to frame grounds,, that rust away or corrode under the bolt
That causes poor electrical travel--ground is all important in wiring
Its just more of anticipating the problem as a friends 2k accord V6 alternator just went out. She was on the freeway and it was a complete engine shutdown.
I dont think the alternator has sensors to warn that the brush is just about worn and ready for replacement. What do you guys think?
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Old Dec 21, 2011 | 10:00 AM
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a charging circuit light will tell you a problem exist in the system
slow starting another clue, weak headlights,,,

Your friend drove a few months with a bad noise before alt failed
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Old Dec 21, 2011 | 02:25 PM
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That warning circuit light should make sense to forewarn the driver.
She probably did not even notice the noise.
Anyone in this forum have his TL completely shutdown due to a bad alternator?
01tl4tl thank you.
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Old Dec 21, 2011 | 03:10 PM
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it would keep running worse and worse until the battery were exhausted, then die
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