Starter battery

Tiny
JEREMY DOUGLAS NOBLE
  • MEMBER
  • 2004 MAZDA MPV
  • 3.7L
  • V6
  • 2WD
  • AUTOMATIC
  • 170,000 MILES
My battery is weak and has hard time turning starter over. With a jump it starts but now it wont turn over at all. Alternator is good I checked. Is it starter?
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Friday, November 18th, 2016 AT 10:22 AM

5 Replies

Tiny
JIS001
  • EXPERT
First verify your battery is not the problem. Also make sure cable ends are bright shiny and clean. If there is corrosion that will give you problems. Most auto parts store can charge and test your battery for you. They do bench test on starters also but I find those test unreliable since out the vehicle they always work fine (after all, it is not trying to turn an engine over). So start with checking the battery. Here is a link on how to load test one.

https://www.2carpros.com/articles/car-battery-load-test

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Friday, November 18th, 2016 AT 11:06 AM
Tiny
JEREMY DOUGLAS NOBLE
  • MEMBER
The lights are not dim. I believe alternator is good and I put new battery in it and still wont even turn over.
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Friday, November 18th, 2016 AT 11:54 AM
Tiny
JIS001
  • EXPERT
As stated earlier, have the battery checked to be 100% sure. If it is good with a volt meter check for battery voltage at the starter battery cable. If no good make sure there is no corrosion. If good then unplug the starter signal wire. With volt meter and with someone holding the key to the run position you should see battery voltage. If you do then replace the starter.
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Friday, November 18th, 2016 AT 1:29 PM
Tiny
JOHNNY G.JR
  • MEMBER
Cables might have excessive corrosion inside of them if you do not get the same voltage at starter cable post as you have on battery.
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Friday, November 18th, 2016 AT 5:20 PM
Tiny
KEN
  • ADMIN
Hey JEREMY,

It sounds like the starter has gone bad, here are some guides that will show you how to test and replace it.

https://www.2carpros.com/articles/car-cranks-but-wont-start

and

https://www.2carpros.com/articles/how-to-replace-a-starter-motor

Please let us know what you find so it will help others.

Best, Ken
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Sunday, November 20th, 2016 AT 5:09 PM

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