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Ever since I've moved the battery to the trunk, I've had "ground" problems.
I've been doing lots of tests trying to find the "bad" ground, but have not found it.
The battery has a 2 gauge power wire running to the starter. Then 8 gauge to the alternator. The ground is 2 gauge from the battery to the center frame rail by the spare tire. I also have a 2 gauge ground going from the tranny to the stock location in the front frame.
The latest test brought some interesting results. I was reading my O2 sensor with my digi-voltmeter. When I hooked the gound of the gauge to the engine, the voltage of the O2 was around .8 volts. When I hooked the ground of the gauge directly to the battery (in the trunk), the gauge read .2 volts and even went to -.4 volts during cycling.
I checked the Ohm's between the engine and battery and it is around 3 Ohms.
This seems okay.
My thinking is that even though the Ohms is okay, for some reason, the frame of the car cannot handle the amount of amps.
I'm thinking of just running a 2 gauge ground wire from the battery to the front frame.
Any opinions, or ideas?
One more thing, how does electricity flow in the car. When starting the car, does power come through the ground then to the starter through the red wire back to the battery. Or does it come from the red power wire and then go through the ground, back to the battery.
I ask this because I'm wondering how the alternator charges the battery. The only wire is the red wire. The current must go through the red wire to the starter and then on to the battery, right?
Thanks!
posted by 168.159.7...
Jeff & Royce's SAAB Extravaganza
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