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Re: Electrical gremlin frustration Posted by Ari [Email] ![]() ![]() In Reply to: Electrical gremlin frustration, whitesaab, Tue, 9 Jan 2007 04:59:29 Members do not see ads below this line. - Help Keep This Site Online - Signup |
The alternator light flickering means that the alternator isn't outputing current to charge the battery. The car barely running could be the ignition amplifier, BUT if you aren't getting power to the rest of the system (no headlights, dash lights, etc), I'd put my money on the ECU not getting power. So I really doubt it's an ignition amplifier problem. A bad ignition amplifier isn't going to make the headlights not work.
It seems like you have an intermittent problem. Sometimes all is OK, other times you don't have electrical power. If the alternator was intermittently bad, the headlights would still run off the battery.
A flaky ignition switch or main relay would explain most of the problem. Sometimes you get a bad connection, and the lights don't work and the engine control doesn't get enough power to run right. That wouldn't explain a battery light. A bad ground from the engine to chassis would cause the engine to run badly, and could explain the battery light.
I would check the ground from the engine to chassis, and from the battery (negative) to chassis. Don't assume the battery light means a bad alternator. All the battery light means is there is a voltage difference between the alternator field coils and the battery positive. That could be due to a bad battery ground.
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