"TheHondaBro" (wwaveform)
03/17/2015 at 20:50 • Filed to: None
0
28|
"TheHondaBro" (wwaveform)
03/17/2015 at 20:50 • Filed to: None | 0
| 28 |
Disco Volante for your time.
Okay, so lately my car has had a pretty slow crank. I checked the voltage on the battery, and it showed 12.4 volts. I'm not entirely sure of the original voltage of the battery., but it was changed about one and a half years ago, so it's not exactly old. The terminals are clean.
So is 12.4 volts healthy?
CounterTorqueSteer
> TheHondaBro
03/17/2015 at 20:52 |
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Here you go!
Jcarr
> TheHondaBro
03/17/2015 at 20:54 |
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Have you had your alternator checked?
McMike
> TheHondaBro
03/17/2015 at 20:54 |
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Is that as high as it will go?
jariten1781
> TheHondaBro
03/17/2015 at 20:58 |
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That's a normal resting voltage. Doesn't mean the battery is good though.
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TheHondaBro
> Jcarr
03/17/2015 at 20:58 |
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No. There are no real signs that my alternator is bad, other than the battery that might be low on voltage.
lonestranger
> TheHondaBro
03/17/2015 at 21:01 |
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Also check your terminals at the alternator and starter, and don't overlook all the grounds. Ground connections are every bit as important as anything.
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TheHondaBro
> lonestranger
03/17/2015 at 21:02 |
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So if the terminals are dirty, cleaning them would get rid of my problem?
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McMike
> TheHondaBro
03/17/2015 at 21:18 |
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What is the voltage of your battery when your engine is running?
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McMike
> TheHondaBro
03/17/2015 at 21:22 |
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Possibly. Get a wire brush or one of these and clean them up. How old is the battery?
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TheHondaBro
> McMike
03/17/2015 at 21:24 |
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14.9 volts.
Amoore100
> TheHondaBro
03/17/2015 at 21:24 |
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Oddly enough our '05 Ody has also been cranking a bit lethargically in the past few days...the battery in it is only about a year old, but I haven't done a voltage check...maybe it's a mid-2000's Honda thing...(you have an Accord coupe, right?)
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lonestranger
> TheHondaBro
03/17/2015 at 21:25 |
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If they're dirty, it'll definitely cause a problem. It might not be the only problem, but it's a problem.
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TheHondaBro
> McMike
03/17/2015 at 21:25 |
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About two years old.
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TheHondaBro
> Amoore100
03/17/2015 at 21:26 |
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Yeah. Could be the same dirty witch that's hexing the ST Fords...
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McMike
> TheHondaBro
03/17/2015 at 21:27 |
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That's not very old. Your alternator seems to be charging.
Try cleaning up the terminals, see if that helps.
From what you've said so far, the battery is decent, and the alternator is charging.
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TheHondaBro
> lonestranger
03/17/2015 at 21:28 |
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Is this dirty?
AMGtech - now with more recalls!
> TheHondaBro
03/17/2015 at 21:55 |
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How low does the voltage drop while cranking? Below about 10ish would indicate a bad battery.
The other test I would do straight away would be to check the amperage draw of the starter while cranking. Most cars will be well below 200Amps. Higher than that could implicate the starter.
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Amoore100
> TheHondaBro
03/17/2015 at 22:03 |
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The what? (I haven't heard about this thing with ST Fords...)
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lonestranger
> TheHondaBro
03/17/2015 at 22:06 |
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Those look clean from what I can see without removing them. There may be shit under the clamp.
But don't forget the other ends: the ground strap to the frame, the positive terminal to the starter, etc. Every connection needs to be good: the chain is only as strong as it weakest link.
Jake - Has Bad Luck So You Don't Have To
> TheHondaBro
03/17/2015 at 22:59 |
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This is healthy.
gergey - Wishes vette was Datsun
> TheHondaBro
03/17/2015 at 23:28 |
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12.5-13 is normal with the car off, 14.5 - 14.9 is normal with the engine running. Hook up a battery tester and see what kind of current it'll support? Alternately, any place that does fluid changes should be willing to test your battery for you
orcim
> TheHondaBro
03/18/2015 at 01:44 |
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More important than dirty is tight. The amperage being pulled relies on a physical connection - without it, not enough juice. Not loose, right?
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orcim
> TheHondaBro
03/18/2015 at 01:46 |
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As someone said, doesn't mean the battery is good. I just replaced a 3 year old battery that showed good voltage, charged with a smart charger so that it said "ok, all done" and then wouldn't crank the car. Turns out, the internals to the battery had rotted and couldn't handle the amperage. Just take it out, drive to nearest auto parts store and let them test it (better yet, to the store/chain that sold it to you - got your receipt?) Their testers can tell in seconds if the thing is bad.
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TheHondaBro
> orcim
03/18/2015 at 01:52 |
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I can't go to the place I bought it, because I've since moved from there. It's still got the factory warranty though.
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TheHondaBro
> orcim
03/18/2015 at 01:53 |
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True. I'll check that tomorrow.
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TheHondaBro
> Amoore100
03/18/2015 at 10:56 |
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They're all crashing!
iNvDrZiM
> TheHondaBro
03/18/2015 at 11:53 |
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The warranty should carry over - you can go to any parts store to have them test it (nearly all do it for free). That's where I'd start. The voltage may read ok but while cranking it may not be giving it sufficient juice.
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Amoore100
> TheHondaBro
03/18/2015 at 18:20 |
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Oh, well there you go...