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Weirdest electrical problem ever!

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crunchymilk

15+ Year Contributor
249
8
Sep 4, 2004
San Antonio, Texas
Ok so I finish the fmic (slowboy) today, runing an evoIII, dsmlink with all the other upgrades. Everything went fine. So tonight I go out and start the car. I turn on the headlights and started to back out. I realized I forgot something so I turned off the car. But the car didn't turn off. What the hell, the key is in my hand out of the ignition and the car is still running . I have no turbo timer by the way. After toying around with it I turned off the headlights and the car turns off. If i start the car without the headlights on and turn it off it works fine, just the headlights are somehow controlling the ignition. Also when I press my alarm key chain, anytime the corner and amber markers lights go on or off there is a loud buzzing sound that sounds like it's coming from underneath the throttle body. This is weird. What the hell is wrong with my car???? None of this happened before the fmic install today. I'm stumped.

Just to add, one of my belts is SQUEALING real loud when I start the car and stays for a long time. i think it's the alternator belt. Alternator is a relatively new Bosch.
 
Ok as I mess around with it some more it's not the headlights that are making the buzzing sounds. Rather, it's my accessory lights, anytime I turn them on or off, the buzzing sound occurs. Car still won't turn off unless all the lights are turned off though.
 
Sounds like you may have shorted something (check all fuses) which possibly melted 2 wires together. There is a mass of wires under the engine fusebox and very weird problems tend to show up there. If can't find problem elsewhere try unbolting this fusebox and look underneath.
 
also, if you take off the covers that wrap your ignition on your steering wheel, check if there are any lose, frayed, cut or otherwise messed up wires. accessory wiring, headlight wiring and ignition wiring are all located in very close proximity. worth a try. the belt could also be power steering
 
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