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Maintenance / Electric Gremlin
« on: July 29, 2018, 05:33:33 PM »
Hello all, I have a 67 RS with a 396, set up with a HEI 1 wire system. Internal voltage regulator alternator. I have never had any issues with it before, now it has developed an electric draw. Its a slow steady voltage draw, but so slow and slight its almost unnoticeable. However when you turn the headlights on the battery voltage goes into a heavy draw and the headlights go dim and start flashing causing the relays to click. I replaced the Horn Relay, headlight switch, high beam switch and the wiper switch. I disconnected the headlight doors to see if the draw was from there, it is not.
This occurs whether the car is running or not. If the car is running with out the headlights on, the battery will drawn down in about 15-20 minutes.
I have checked all the grounds I can find. I have even been touching all the metal I can to see if soothing shocks me LOL.
Does the alternator have something inside of it that could go bad and cause a constant draw or that could cause my symptoms ?
I am really at loss here.
I am open to all suggestions.
This occurs whether the car is running or not. If the car is running with out the headlights on, the battery will drawn down in about 15-20 minutes.
I have checked all the grounds I can find. I have even been touching all the metal I can to see if soothing shocks me LOL.
Does the alternator have something inside of it that could go bad and cause a constant draw or that could cause my symptoms ?
I am really at loss here.
I am open to all suggestions.
If the weren't they still sent them out, I drove a car ( Gran Fury) that was always about 5mph off back in the 80's. Our fleet manager didn't seem to care. Florida requires that the speedo in a police car be certified every 6 months if you use it to enforce speed. So if your speedo was off by 5mph you knew it and had a certificate, to show that you knew what the correction was to enforce accordingly. Now with the development of electric speedo's they are always pretty much accurate. Police package cars sometimes still say certified. However Fords Expedition and large trucks that are used in LEO applications are Fleet not Police and do not have certified written on the speedo. That is another reason the speedo has to be checked every six months.