i have a 93 sc300, started it and heard funny noise looked under hood and saw somke near firewall on drivers side tried to shut off ignition and car kept running until i disconnected battery pos. terminal. when i reconnect battery it tries to start the car again with no key in the ignition.. any feedback is appreciated thanks

 

Oh wow. Ghosts!

Remove the starter relay and check it first. It must be stuck on "on" position all the time.

 

i was thinking ignition switch???

 

checked the starter relay and still have ongoing problem.. going to check starter solenoid next.. does anyone know where the ignition switch is located??

 

Smoke indicates hot wires, hot wires will melt together so they create connections that will do all sorts of wacky things. Try tracing your ignition switch wires and see if any are melted. They should all be in the main harness running from the engine fuse box to interior fuse block. Most of this wiring is located in the driver's side wheel well. Thats where all my electrical gremlins were hiding anyways.

 

im goin out to start this adventure right now. thanks mike

 

ignition switch eliminated, took starter out tested it its good. short somewhere between relay and starter i think.. ANY IMPUT WOULD HELP!!!!!

 

I would check the spot where the smoke was coming from and check that whole wiring cluster. Some wires have to be melted together to make that short circuit. Has he car been is any accidents that would cause the wiring to be modified or anything of that nature? I would try and get hold hold of some wiring diagrams or buy a dealer wiring book off of ebay if there is one for sale. It would help you narrow down the circuits that would be on at the time and possibly start the car if shorted together.

 

faulty starter solenoid was stuck on therefor starer is always engaged.. ordered a new one will get it tomorrow.. keepin my figers crossed.. couldnt find any shorts or any areas of melted wire..

 

Well that is interesting I will remember that odd occurrence. Was there any corrosion on it or was it re manned from somewhere else?