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Thread: Ford Fiesta 2011 WONT START

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    Question Ford Fiesta 2011 WONT START

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    Hi guys. Yesterday i ran out with another issue with my fiesta. IT WONT START!?!?!. I was wondering maybe my recently installed amplifier and subwofer killed the battery? But i doubt, coz i turn it on while driving the car or the engine is running. And the next morning when i want to turn on the engine. I got nothing. All the lights in the dash are on brightly and the park lights are clearly open. But when i turn the key all i got is a slow clicking sound and the car wont start. So i pulled out the battery and took it to the shop for charging. And they said the battery case was a bit bloated. But the battery is still fine but as soon as they remove it from charging, the voltage immediately dropped. So ive come with a conclusion that i need to replace the battery. But i want to know from you guys. Based on your experience. Is my battery dead because of my car audio. Coz the bass on my audio is really kicking good and i loved it But maybe it ate a lot of juice out of my battery and killed it? Also i checked all the fuses from the engine bay and in the dash its all ok. So what i got left is the battery to be replaced. Is it really the battery? That wont start the car even all the lights in the dash are on? Thanks in advance.

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    1 members found this post helpful.
    If you have an amplifier, it is a huge power consumer. You might want to consider adding a second battery to add capacity to your system. It will give your alternator some relief. You should also recheck all the connections to ensure nothing is grounding out unintentionally. You might also want to check the underhood fusebox for corrosion of the connections. If you live very near the ocean, salinated air may be eating it up there.
    I believe that you will eventually smoke the alternator if you dont add a deep cycle battery in a post to post arrangement. You are asking a minimal electrical system to do a high demand job.

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    Thanks Scotman.. definitely i will add another battery just for the amp. Coz the Main Starter Battery now is Dead i mean theres no lights at all in the dash... Now all i need is a proper diagram on how to connect properly 2 batteries in my fiesta. I heard that i also need to add a battery isolator? to charge properly the 2 batteries? Or ill just add a connection and hook up 2 batteries in the alternator? Thanks again

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    1 members found this post helpful.
    Quote Originally Posted by FROMDUB View Post
    Thanks Scotman.. definitely i will add another battery just for the amp. Coz the Main Starter Battery now is Dead i mean theres no lights at all in the dash... Now all i need is a proper diagram on how to connect properly 2 batteries in my fiesta. I heard that i also need to add a battery isolator? to charge properly the 2 batteries? Or ill just add a connection and hook up 2 batteries in the alternator? Thanks again
    Post to post means positive cable from under hood battery to rear battery positive post. Negative cable for additional battery is from its negative post to a good attachment location on the floorpan. Preferred place would be at frame point. I assumed that you had already wired in some kind of power shut off. Otherwise your amp will never shut down. That arrangement will kill even ten batteries, it would just take longer.

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    Thanks again Scotman i'll take your advice on the connections when i add an additional battery just for my amp. And just an update. I was able to get a New replacement Battery for the Fiesta. And its 50 amperes which is higher than the original (44 amp.) so i feel a lot more alive when i drive the car while kicking the bass of my amplifier. and i never get a power shortage. Maybe because its a new battery or because of a higher ampere rating of the battery coz its a bit bigger than the old one. But i'll just monitor the newly installed battery because it has only 15 months of warranty. hope it reaches or more before i replace it again. As of now its all fine and everything is working. no warning lights in the dash. And yeah I already placed a Kill Switch for the amp. coz just like what you said, it will always be On if i don't place a killer switch for it. Thanks again man appreciate it

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    I've installed dozens of aftermarket stereos. You don't need a 2nd battery. You should install a 1/2 to 1.5 farad capacitor in-line with the amp. Capacitors charge and discharge much faster than batteries. When the bass drops deep, the power will be sucked out the capacitor and it will quickly recharge from the alternator. The only time you should have a dead battery is from a few things... Either there's a short, the battery is old, or you ran the battery down below 50% its capacity by playing the stereo for long periods of time without the engine running. It all depends on the wattage of your amp. Watts = amps x volts. So your amp will use different amounts of power depending on if the engine is running or not. They can say whatever amount of wattage they want, but when your car is running, you're normally at 14.4 volts. So if the amp drops the bass and sucks out 30-40 amps of power for a brief second, you're putting out up to 600 watts from that bass dropping. I used to have a 1400 watt sound system that ran perfectly with a 1.5 farad capacitor. Over 20 years ago, I remember paying nearly $180 for my capacitor from Crutchfield. Now a 1 farad capacitor is like $20 bucks from Amazon. That's mindblowing how they've dropped in price.

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    You need to wire it so it will not take any power when the key is out. The starter requires a lot of power. The wire going to the starter is as fast as a pencil, the wires going to the dash lights are really fine.


 

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