Question about 2004 Mazda Tribute

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Put new alternator and 2 new batteries, you can drive the vehicle down the road and it running fine and it looses all electrical power like the battery is completely dead, Jump start it and its like nothing was ever wrong

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  • Shay McDonald
    Shay McDonald Mar 29, 2015

    Think you! i will try and check it out as soon i get a ohm meter. think you again.

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5 Answers

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Test the alternator charging capability by connecting a volt meter to the battery terminals and starting the engine. The voltage should be at least 13 VDC.
If it's less it will not charge the battery enough.
Hope this helps.

Posted on Mar 29, 2015

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One more thing to check: measure what stream goes to your battery while on charge on vehicle. If you don't know how to do it:
-- put a known resistor of let's say 1 Ohm of good power 20-50 W in the chain (between "+" terminal on the battery and power cable providing a good contact)
-- Start engine and check voltage on resistor. On one Ohm it will tell you power of electrical stream through (i.e. 1 Volt = 1 Amp)
If there's a good charging stream and you still getting imminent battery failure the problem is in inner circuit of battery and it is to be replaced. If there's no stream then problem is in alternator/belt/wiring/fuse

Posted on Mar 29, 2015

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The is a main fuse in the fuse panel under the hood. Like 175 amps. It is where the big alternator wire goes to the fuse panel, could be on the side of it.

Posted on Mar 29, 2015

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  • 2 more comments 
  • Randy Ohler Mar 29, 2015

    Yes. You can check it with an ohm meter. You can test it with a test light. But loosen the nuts/bolts and retighten first to ensure a good connection. Start the car, the light should come on at both sides of it.

  • Shay McDonald
    Shay McDonald Mar 29, 2015

    Think you! i will give that a try as soon as i get a ohm meter

  • Shay McDonald
    Shay McDonald Mar 29, 2015

    You have been very helpful but i dont know if im voteing right

  • Randy Ohler Mar 30, 2015

    Votes don't matter to me.

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It sounds as if the vehicle is running on the battery power only. Check the battery voltage at the battery when the vehicle is off completely. Record that value. Now, start the vehicle and check the voltage at the battery the same way. If the voltage is NOT at least 1-1.5 volts higher, the battery is not being charged. If this should be the case, you have to check the alternator and all the wiring and their values that are connected to it. A good auto electrician can tell you the fix with little diagnosis.

Posted on Mar 29, 2015

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Recheck the battery terminals might need more cleaning .

Posted on Mar 29, 2015

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SOURCE: alternator/battery problem

either drive belt too too big or drive belt tensioner broken or drive belt need adjustment if you have v type belt.

Posted on Apr 26, 2013

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SOURCE: I had the alternator rebuilt and have replaced the

Take the alternator to auto store like Shucks and have them bench test it in the store. If your not getting 13.5- 14.5 volts then your rebuilt missed something. A bad diode or two on the alternator or if your vehhicle has a voltage regulator, a bad regulator will also cause this. A voltage of less than 13.0 volts would indicate that the vehicle is drawing fromthe battery to runn the engine under demand thus draining the battery over time. That's a charging problem in the system, check alternator on the bench test then go to the voltage regulator if you have one. Make sure belts are not slipping, less then 1" play.

Posted on May 08, 2009

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