Battery relocation Problem - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 14 Old 05-01-2006, 08:22 PM Thread Starter
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Battery relocation Problem

I relocated my battery in my trunk, and i am having problem with not enough amperage to start my car. I bought a 800 cca deep cell battery, plus installed 1/0 starter power wire and ground. It sounds though if i have a dead battery when i go and start it. I dont have a sound system or anything unusaual in my car. I also put in a PA performance 150 amp alternator. My car is a 92 gt. Please if u have any ideas of what i can do please help! Thanks.

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post #2 of 14 Old 05-01-2006, 08:37 PM
 
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after u start it, did u pull a cable off of your battery to make sure the alt was keeping the motor alive?

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post #3 of 14 Old 05-01-2006, 08:57 PM Thread Starter
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well i havent got that far yet. My car wont even turn over any ideas?
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post #4 of 14 Old 05-01-2006, 09:09 PM
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Check all of your grounds. Especially the ones up front.

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post #5 of 14 Old 05-01-2006, 09:14 PM Thread Starter
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yep everything tight. i hooked my battery back up at the stock location, and stock wires fires up, and starts fine... huh.... i am clueless.....anybody ever exp. this????
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post #6 of 14 Old 05-01-2006, 09:41 PM
 
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I had the same problem with my hatch install a few years ago. If I remember right, I ended up replacing the braided ground from the back of the motor with some 4ga. wire. It seemed to help somewhat but still dragged a little. I seen a past post recommending a ground wire run from trunk to the front . Makes sense considering the starter is located in front subframe where it's grounded.
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post #7 of 14 Old 05-01-2006, 10:20 PM
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Where is it grounded? To the frame?

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post #8 of 14 Old 05-01-2006, 10:39 PM
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This may help... https://www.corral.net/forums/showthread.php?t=587218

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post #9 of 14 Old 05-01-2006, 11:14 PM
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I would run a ground from the battery all the way up to the front. Not just to the frame in the back. That seems to solve alot of other peoples similar problems.

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post #10 of 14 Old 05-02-2006, 12:46 AM
 
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I have four ground wires on mine. Two in front and two in back. In the front the grounds go from the engine to the subframe, and from the subframe to the body. In the rear the battery grounds go to both the body and the chassis. I have no problems unless the voltage gets below 10 volts. (car sits ALOT). My subframes are also connected so that may help some as well.

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post #11 of 14 Old 05-02-2006, 01:06 PM
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I ran the neg cable to the right rear wheel well and bolted it down. I had taken it down to bare metal and rubbed a little electric grease on there first. I haven't had an issue with my install yet.

PS - I also used 4g power wire running up to the starter solenoid. I remember from my "stereo days" that you'd lose alot of power over distance with large cable. My car starts fine every day... no issues.

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post #12 of 14 Old 05-02-2006, 01:11 PM
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I would run a ground to the front.. you may have too much resistance to be pulling that much amperage through the frame. At least to troubleshoot it, mabey attach it at the battery and back of the engine and if it starts fine route that same cable through the car.
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post #13 of 14 Old 05-02-2006, 01:54 PM
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bad ground.

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post #14 of 14 Old 05-02-2006, 02:52 PM
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DO NOT pull the +ve cable with the car running unless you want to buy new diodes for your alternator.
Deep cycle batterys don't work well as starting batteries, it may worlk ok in the stock position but if there is any small issue it will not work well.
Check your ground and make sure it is aat least 2/0, your power feed I would of used 2/0 minimum but I like overkill.Check all the connectors sometimes they can be funky and look ok so look close and check them with ohm Meter for resistance.
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