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  1. #1

    i keep getting low voltage

    getting a code for low voltage on my 04rxp, after fully charging the battery got a extra 5 min before it came on again. would it be the regulator or stator im thinking the regulator any common problems like this?
    thanks


  2. #2
    Nothin' better than Doo'in it! BigDaddyRXP's Avatar
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    It's more than likely a bad rectifier... considering that you don't have a blown fuse. You can perform several tests on the stator to make sure that it's good. There is no way to test the rectifier, but if your stator checks out ok.... the rectifier would most likely be your problem.

  3. #3
    any ideas on how to test the stator. i figured testing the battery while running is correct if the rectifier is bad the voltage would stay low..?

  4. #4
    Nothin' better than Doo'in it! BigDaddyRXP's Avatar
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    Checking the stator:

    1. Check resistance between all 3 yellow stator wires, unplug stator and check 1-2, 1-3, 2-3
    ohm readings should be between .1 - 1.0

    2. With the engine running, stator unplugged test the 3 wires in the same three sequences mentioned above.
    Set your meter for AC voltage, you should see 24 VAC on all three readings.

    3. Set your meter to ohms, and attach the ground lead to a solid engine ground.
    Check all three yellow wires for resistance to ground, there should be no resistance to ground.

  5. #5
    Nothin' better than Doo'in it! BigDaddyRXP's Avatar
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    Quote Originally Posted by sr240 View Post
    any ideas on how to test the stator. i figured testing the battery while running is correct if the rectifier is bad the voltage would stay low..?
    Battery voltage when running should be right at 14 vdc. If it's not at 14... it could be the stator or the rectifier. If the stator checks out good, and you don't have a blown fuse, the rectifier is gonna be your problem.

  6. #6
    ok thanks ill try that. rectifiers go out often?

  7. #7
    Nothin' better than Doo'in it! BigDaddyRXP's Avatar
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    On another note... on a "good" fully charged battery, you should be able to run alot longer than only 5 minutes before you get a low voltage alarm... even if it's not charging

  8. #8
    Nothin' better than Doo'in it! BigDaddyRXP's Avatar
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    Quote Originally Posted by sr240 View Post
    rectifiers go out often?
    They don't last forever. In the stock location (air intake), they get alot of air flow... which is what they need to stay cool. Two things will cause them to fail faster than normal... lack of air flow (when removed from intake), and high RPM limits (aftermarket ecu's).

  9. #9
    ya its all stock the computer and location

  10. #10
    Got Boost? psycho rxp's Avatar
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    More than likely it will be 1 of the two 30A fuses on the side of the MPEM. (specificly the top one)



    Rectifiers rarely go bad. If a rectifier went out your voltage will be too high while running over 3500 rpms , which would cook your battery. I'm running my original Stator from 04, with over 650 hrs on it. Has been thru many SC failures,and a few sinkings in Salt water...... and still going strong.

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