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Old 04-30-2008, 08:54 PM   #1
toutanje
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Unhappy Battery Relocation to Trunk

I was reading some guides about how to relocate the battery to the trunk and decided it would be a fun little project to do while im on break.

Long story short, I was moving the battery to the back and did all the wiring and what not using 4 gauge wire. After it was all said and done, the car wouldnt start anymore. I moved it back upfront and used all the original wiring and everything and the car STILL didnt start!

Today I took the battery to autozone, they tested it and said it was bad. So then I bought a new battery and guess what? Same problem, car still didnt start. Does anyone have any suggestions as to what might be the problem with the car not starting anymore, even after I moved the battery back to it's original location?
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Old 04-30-2008, 09:32 PM   #2
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You may have blown one of the main fuses in the engine compartment fuse box, check those.
Also did you just move the OEM battery to the trunk? If so that's not a safe move, definitely a no-go without a proper enclosure and still not a great idea with one. Not to mention the stock battery is short on cranking power to begin with, and will likely struggle to start the car if trunk-mounted. If you're serious about doing this go with a sealed battery, preferably an AGM type (Optima or similar). Also use larger wire, 4 ga. is marginal for a trunk mount.
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Old 04-30-2008, 09:57 PM   #3
toutanje
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I checked all the fuses in the engine compartment, all fine. I have a secure mount and all for it in the trunk, and the new battery I picked up today is an optima.

But I dunno its weird, even after I moved everything back to the way it originally was, still no engine starting. It cranks over and is just about to start but there isnt enough juice to get it going. I have a volt gauge in the car and when i turn just the ignition on, it reads at 11. Even after the new battery it still reads the same thing..
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Old 04-30-2008, 11:16 PM   #4
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Quote:
Originally Posted by toutanje View Post
I checked all the fuses in the engine compartment, all fine. I have a secure mount and all for it in the trunk, and the new battery I picked up today is an optima.

But I dunno its weird, even after I moved everything back to the way it originally was, still no engine starting. It cranks over and is just about to start but there isnt enough juice to get it going. I have a volt gauge in the car and when i turn just the ignition on, it reads at 11. Even after the new battery it still reads the same thing..
but did you check the MAIN fuses? not the horn and stuff in the black box on the side. happened to me when i got the wires crossed + on - and - on +
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Old 05-01-2008, 03:09 AM   #5
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Quote:
Originally Posted by -Kevlar- View Post
but did you check the MAIN fuses? not the horn and stuff in the black box on the side. happened to me when i got the wires crossed + on - and - on +
i did the exact same thing doing a mount. i would check all the fuses with a lil checker thing. haha. my dads a computer engineer so, i have these tools at my house.
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Old 05-01-2008, 08:21 AM   #6
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i did the exact same thing doing a mount. i would check all the fuses with a lil checker thing. haha. my dads a computer engineer so, i have these tools at my house.
talk about feeling like a dope.
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Old 05-01-2008, 11:51 AM   #7
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I just checked the other fuse box inside the car behind the drivers knee panel and all were fine too... man why did i mess with this it was working fine before.

lol reminds me of that saying if it aint broke dont mess with it.
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Old 05-01-2008, 01:09 PM   #8
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I just checked the other fuse box inside the car behind the drivers knee panel and all were fine too... man why did i mess with this it was working fine before.

lol reminds me of that saying if it aint broke dont mess with it.
youre still not checking the proper fuses... im not sure of the location b/c i couldnt figure it out either and a mechanic had it done in a few hours.
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Old 05-01-2008, 01:19 PM   #9
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oh, the only fuse boxes i know of is the one in the engine compartment near the washer fluid tank, and the one behind the drivers knee panel.

the engine is running to the point after it cranks. like its at the stage in between where you can hear the engine cranking and when the engine is actually running. dont know if that makes sense but i tried explaning lol.

im gonna go back to autozone and get a stronger amp cranking battery.
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Old 05-01-2008, 09:25 PM   #10
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There are two fuse blocks. The one near the battery in the engine compartment id=s the Main Fuse Black. Check the SBF1, SBF4, and SBF5 fuses in this fuse block. They are the outside ones on the side away from the relays. There is also the Fuse and Relay Box next to your left knee in the drivers compartment. Check fuses 11,13, and 18 in this fuse block.
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Old 05-01-2008, 09:44 PM   #11
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Originally Posted by toutanje View Post
im gonna go back to autozone and get a stronger amp cranking battery.
don't waste your time doing that, you can start a car on a surprisingly small battery. a garden tractor battery will start a car.

I'm guessing you have either a bad ground or broken cable/bad battery post connector.
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Old 05-04-2008, 10:11 PM   #12
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Default found out the problem

And the winner is..... spark plugs soaked in fuel.

I guess the 4 gauge wire isn't thick enough so when I tried starting the car it wouldnt start. By the time I moved the battery back up front the engine had been already flooded. I just took the plugs out, let them dry up and BAM, engine started right away.
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Old 05-04-2008, 11:44 PM   #13
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Enough juice to run the fuel pump and injectors, but not enough to run the ignition??
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Old 05-05-2008, 12:37 PM   #14
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Originally Posted by bcblues View Post
Enough juice to run the fuel pump and injectors, but not enough to run the ignition??
Dunno, probably it was a bad ground in the back. The ground I used in the back was one of the bolts that hold the back seat down. But all is good now I think I'm just gonna keep the battery upfront for now
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Old 05-05-2008, 01:51 PM   #15
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Dunno, probably it was a bad ground in the back. The ground I used in the back was one of the bolts that hold the back seat down. But all is good now I think I'm just gonna keep the battery upfront for now
well good. im glad its back to normal for ya.
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Old 05-05-2008, 08:44 PM   #16
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haha wow, I never would have guessed that
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Old 05-07-2008, 09:45 PM   #17
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Good thread to add for a battery relocation faq.
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