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Russian CBR
Lv 4
Russian CBR asked in Cars & TransportationMaintenance & Repairs · 10 years ago

Mitsubishi Evo 8 alternator overcharging?

Ok so my alternator is putting out about 13.5-14 volts on idle, and 15.6 (max ive seen) when reving it up.

When it overcharges, my break and battery lights flicker.

Any reason other then bad alternator/voltage regulator?

Update:

manual for my car says max output should not exceed 14.8 v

5 Answers

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  • ?
    Lv 7
    10 years ago
    Favorite Answer

    Your car is definitely overcharging.

    The voltage should never exceed about 14.25 volts, certainly nowhere close to 15 volts.

    Sounds like you may need a new alternator as most cars these days have the voltage regulator built in to their alternators.

  • hohn
    Lv 4
    5 years ago

    Evo 8 Alternator

    Source(s): https://shorte.im/a8awn
  • Anonymous
    5 years ago

    Evo 9

  • ?
    10 years ago

    Sounds like 13.5 is good. Check your ground wires. Flickering lights are often wires not grounded good. A battery has to have 12 to start so if the alt is doing it's job it needs to put out 13.5 to 14 .

    I think your Ok.

  • Michael
    10 years ago

    Yep, its the alternator for sure. Just make sure you buy a good replacement, not a el-cheapo.

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