BoatsHateMe
Junior Member
Picked up the 2008 Shelby GT about a month and 1/2 or so ago. Drove it home and parked it in the garage until spring. I've started it occasionally without issue. Tonight I went out to start it and it was flat dead. The battery is a red top Optima. Cables are spotless.
I tried jumping it with my booster pack, I got nothing out of that. Hooked up my charger and as soon as the battery started taking a charge lights flickered on of off - dimly on the front hazards/blinkers (possibly rear too but that was still covered), the horn was intermittently squawking weakly, all without the key in. After about 20 seconds the horn would quit squawking but there were still electrical surges I could hear. One intermittent buzzing i heard was coming from the trunk. After opening the trunk I isolated it and it was behind the right trunk liner on the rear quarter panel, right behind the fastener that secures the liner to the trunk. I did not pop this out to see what was behind it.
Once The battery charged for a bit I gave it a whirl again. Electrical was still pulsing and buzzing and when I put in the key and turned it everything lit up and was pulsing/buzzing. The engine did not crank at all when the key was turned, nor did it click like it was trying. Turning the key off and removing then other things including the horn and blinkers would buzz and squawk at me. I had to disconnect the battery to get it to stop.
I've not yet tested the voltage. Not sure I can find my tester but I will put the charger on it overnight, disconnected and see where that gets me in the am.
Here is a video of what it was doing. Any thoughts on how to approach this?
I tried jumping it with my booster pack, I got nothing out of that. Hooked up my charger and as soon as the battery started taking a charge lights flickered on of off - dimly on the front hazards/blinkers (possibly rear too but that was still covered), the horn was intermittently squawking weakly, all without the key in. After about 20 seconds the horn would quit squawking but there were still electrical surges I could hear. One intermittent buzzing i heard was coming from the trunk. After opening the trunk I isolated it and it was behind the right trunk liner on the rear quarter panel, right behind the fastener that secures the liner to the trunk. I did not pop this out to see what was behind it.
Once The battery charged for a bit I gave it a whirl again. Electrical was still pulsing and buzzing and when I put in the key and turned it everything lit up and was pulsing/buzzing. The engine did not crank at all when the key was turned, nor did it click like it was trying. Turning the key off and removing then other things including the horn and blinkers would buzz and squawk at me. I had to disconnect the battery to get it to stop.
I've not yet tested the voltage. Not sure I can find my tester but I will put the charger on it overnight, disconnected and see where that gets me in the am.
Here is a video of what it was doing. Any thoughts on how to approach this?