Starting issues/cranking over

[Mrpopper239]

Hi guys! I have a 2016 mustang GT. And my car is acting strange...when I push the start button to turn the car on it sometimes struggles to crank over and it makes what seems to be a grinding noise coming from what I believe is the starter... I need advice as to what to do. Battery is good. Should I just replace the starter. Car also has a new alternator. Thank you!

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[ORRadtech]

How do you know the battery is good?
Have you checked both ends of all battery, starter and alternator cables for corrosion and tightness?
Good parts stores can check that the starter is good.

 

[Mrpopper239]

How do you know the battery is good?
Have you checked both ends of all battery, starter and alternator cables for corrosion and tightness?
Good parts stores can check that the starter is good.

Battery is good reads the right voltage and connections are tight to battery no corrosion there either. Haven’t checked the starter connections

 

[NoVaGT]

Battery is good reads the right voltage....

I'm still going with it's your battery. It reading the right voltage may not necessarily mean it's still good.

Unless you've replaced it, it's probably 5-6 years old now.

And it's also smart to start with the most obvious thing, and work your way from there.

 

[Mrpopper239]

I'm still going with it's your battery. It reading the right voltage may not necessarily mean it's still good.

Unless you've replaced it, it's probably 5-6 years old now.

And it's also smart to start with the most obvious thing, and work your way from there.

It was replaced about a year ago only changed the battery once since stock I don’t think a battery would go bad that fast

 

[NoVaGT]

It was replaced about a year ago only changed the battery once since stock I don’t think a battery would go bad that fast

If I were in your position, I'd replace it even though it's only 1 year old. It should have some warranty that covers replacement, and it's the most likely suspect for your issues.

 

[Mrpopper239]

If I were in your position, I'd replace it even though it's only 1 year old. It should have some warranty that covers replacement, and it's the most likely suspect for your issues.

Hmm interesting just doesn’t make any sense to me. Thank you for the help

 

[NoVaGT]

Hmm interesting just doesn’t make any sense to me. Thank you for the help

I'll put $5 on it. Best of luck!!!

 

[ORRadtech]

You've got to eliminate the basic stuff first.
What resting voltage is the battery at?
If you believe it to be good then take it to any parts store and ask for a load test. It's free at most places.
The wiring can be good at the battery but what about the other end? Most never check that. Also, a loose, meaning not tight enough, not necessarily wobbly loose connection anywhere in the system can cause very odd issues. And as I said above, good parts stores can check the starter. Unless you just want to throw parts at it...

 

[larr12]

Whats the CCA of the battery?

 

[NoVaGT]

Whats the CCA of the battery?

And brand/model?

 

[larr12]

And brand/model?

You can test a 600CCA battery and get 12.5-14 volts but only 200-300CCA.

 

[NoVaGT]

You can test a 600CCA battery and get 12.5-14 volts but only 200-300CCA.

I just noticed the car has a new alternator.

Here's my guess;

OP had similar issues in the past. Replaces battery. Still has issue. Replaces alternator.

Replacement battery was ruined because the alternator was shot. Now car doesn't start.

Of course that's a complete WAG.

 

[TexasRebel]

These cars do strange things with a weak battery.

 

[Mrpopper239]

Whats the CCA of the battery?

590

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