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Security light problem..


Datz350

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I bought a 85 300zx from a friend for 300. It would crank but not start. I checked the ecu for codes following the steps. After I pulled the codes I go to try and start it again and as soon as I turn the key to crank everything shuts off. I disconnect the battery for about 30sec. then go in to try again. I noticed the security light is blinking, I turn the key to accesories and everything seems normal, then I turn the key to start the car and everything shuts off and will not come back on unless I disconnect the battery... What's going on?

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Its not related to the security system at all, the car won't even crank when the security system is armed. The security light flashes because one of the door/hood/hatch switches is bad. Two completely seperate issues, the light flashing just means it won't be able to arm. Sounds to me like its a connection with the battery cable and when you try to crank it over its losing connection, then once you mess with the connection again it has the connection back for a bit.

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Thanks for the help, brother. Problem ended up being bad battery cables and stuck starter. Finally got it started. Now I have fuel leaking from the top of the gas tank. I'm thinking one of the fuel lines is busted. Will be dropping the tank this sunday.

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  • 6 months later...

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