Fifth Avenue - ignition kills electric circuits

Hey,

My 1985 5th avenue has been trouble free till now. Yesterday, I went to start car - all electric features worked as typically expected. When I attempted to start the car, all electricity to everything died. Battery charge checks ok. I verified terminals on battery are clean and connection is sound. It's like a circuit breaker tripped, killing all electric circuits. This morning, I got into the car - lights worked, radio, windows, etc. But when I attempted to start the car, same thing happened. All electricity was cut to the radio, windows, etc.

Any ideas ya'll have are most appreciated.

Thanks

Reply to
mike
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Mike

But when I attempted to start the car, same thing happened. All electricity was cut to the radio, windows, etc.

There are two power circuits that go from the ignition through the connector on the firewall. Sometimes some of the individual pins/connectors get tired. I had this happen twice on different vacations. Fortunately I had a voltmeter and my service manual along and I did a fix. Actually a bypass wire until I got home and put in the proper replacement parts. The AC blower and compressor was the culprit. At the time I also added a high output alternator. I should have done it before.

Bob AZ

Reply to
RWatson767

How old is your battery? Sounds to me like it could well be the battery is bad. When you say the electronics all fail, this could just be the symptom of a battery dropping to a very low voltage when the starter is drawing high current.

I'd attempt to jump start the vehicle and if this works, I'd suspect the battery and/or charging system.

Good luck.

Bob

Reply to
Bob Shuman

Reply to
Steve

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