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Fellow members i need your help again. My battery keeps draining on my 84.
Have replaced the starter, alternater, ignition coil, ignition module. Have unhooked rear defroster, underhood lights and removed all unnecessary fuses. What else can i do to solve this problem? The dash cluster does not work 100%. All works except the mph guage. Could this be shorted out draining my battery. Any ideas or suggestions would be greatly appreciated.
Thankyou all very much!
The best thing to do is get a DC clamp meter which will show you current drain in your wires allowing you to trace the problem. I don't know if radio shack still sells them or not. They only show an AC clamp meter on there web page, but I thought I one time the sold a DC clamp meter.
From: "Drive like Hell, you'll get there faster." Tucson AZ
Re: please help me with my 84 (sunshine72)
This may seem like an idiot's solution but umm make sure your car is STARTED in full ignition when using the lights and electrical equipment in your vette, i.e: make sure the alternator is actually supplying a current to the battery when things are runnin. For some reason my battery drains way too fast when ever I use things in the car and don't have the engine and therefore the alternator running. SO don't put the vette in the first ignition setting for too long without the vette actually running and don't use any equipment without doing so, including the stereo sys.
I am not sure on the 84 or if my problem is anything like yours, but I would end up having a fuse blow that would then keep the alt from charging the batt.
It took awhile, a long while, but a shop traced the the blown fuse to a connection to a sensor on the tranny and as long as it was disconnected, the fuse never blew. My only indication in the cockpit was a caution light, and I can not remember which one it is now. When the light came on, I knew the fuse had blown and that the alt was no longer charging the batt.
Did you have the alt checked out before replacing it to make sure it was bad?
The amp meter test as mentioned above should help you.
From what I have heard the memory backup circuit in the dash ( that stores MPG data when the ignition is off ) can fail so that it still works but drains the battery. Now that yours is not woring that would make it an even bigger suspect.