2001 Toyota Camry Electrical problem

2001 TOYOTA CAMRY
100,000 MILES • 3.0L • 6 CYL • 2WD • AUTOMATIC
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MICHAEL POTTER
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  • 3 POSTS
When you are driving and put your foot on the brake or turn on either indicator the headlights and or the dash lights will dim considerably. The radio will also stop briefly and the cruise control often disengages. The battery still charges OK. I have checked all electrical connections including earths that I can find.
Jan 26, 2014 at 2:22 AM
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MLDANIELS2000
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 227 POSTS
Would suggest taking to a parts store for a free charging system analyzing. You may have a bad diode in you alternator which will cause voltage drop on the battery because it isn't charging for excess demand on battery. Each alternator has 3 diodes that force alternating current (a/c) into direct current (d/c) for battery charging and car electrical system needs. When one diode goes bad it may not put on a charging indicator light because it is charging, just not efficiently.
Jan 26, 2014 at 1:36 PM
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MICHAEL POTTER
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So it is possible for the battery to charge OK but when the car is running and is loaded when lights are being used, that the alternator is not coping because of a diode problem. Does it then need a replacement alternator?
Jan 26, 2014 at 8:13 PM
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MLDANIELS2000
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  • 227 POSTS
Yes, replace alternator.
Jan 26, 2014 at 8:20 PM
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MICHAEL POTTER
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Thank you for the help you have provided. Just one last question. The camry has a Bosch alternator in it at present. Can I replace it with a Denso? It is the correct Denso for the camry, however I am not sure if the mountings will be the same. I am buying the replacement online as I live in a remote area.
Thanks again
Jan 27, 2014 at 12:59 AM
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MLDANIELS2000
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  • 227 POSTS
I can only find Denso compatible to that vehicle. Not sure of the Bosch.
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Jan 27, 2014 at 5:37 AM