1967 Chevy Impala SS FULLY Charged Battery, but NO - Impala Tech
Electrical & Wiring Troubleshooting electrical problems

 
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post #1 of 5 (permalink) Old 05-19-2016, 07:55 AM Thread Starter
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1967 Chevy Impala SS FULLY Charged Battery, but NO

This problem just started today. Started car several times this AM – no problem. Aprox. 5 minutes after the last time the engine was started went to restart – but nothing. Turned the key and got one click and all went completely dead – no lights, no radio, no anything. Have a new battery but checked it anyway. It is fully charged. Put a load test on the battery and results were positive. Checked the ground from the battery to the chassis and no problem. Removed the battery terminals and wire brushed them. No change. Looked for burned wires – nothing. Just for the heck of it made sure all the fuses in the fuse box were good. Now for the weird part which is driving me nuts. Let the car sit for a couple of minutes and get power back, i.e., all lights come on, etc. Try to start and get one click and all goes dead again. At this time check voltage from positive to chassis ground and get a reading of 4 volts. After a couple of minutes the reading jumps to 12.5 + volts. And the cycle starts all over - lights are on, turn switch and get one click and all is dead again. A viscous cycle. Now that I bored you to death I would appreciate any suggestions as to areas / components to check. Thank, Bob
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post #2 of 5 (permalink) Old 05-19-2016, 09:58 AM
BA.
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Isn't there a power feed at the firewall bulkhead connection point? (where things go to your fuse box just on the other side of the firewall)

Is it possible that this power feed wire has a higher resistance than it should via internal corrosion, and/or it's getting hot, there-by increasing resistance and losing voltage?

HOW A NOVICE REBUILDS A 66 IMPALA CONVERTIBLE:
http://www.impalas.net/forums/blog.php?u=1432
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post #3 of 5 (permalink) Old 05-20-2016, 07:20 AM
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Check your battery cables at the battery and at the starter and at the ground to the block. Be sure they are clean and tight.
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post #4 of 5 (permalink) Old 05-21-2016, 01:58 PM Thread Starter
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Its was the positive battery cable, i.e., starter to battery. Thanks Bob
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post #5 of 5 (permalink) Old 05-23-2016, 11:32 AM
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You are welcome. I am glad it was an easy fix.
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