will not stop running

Nissan 300ZX technical discussion forum: Maintenance, performance, installations, modifications, how-to's and troubleshooting.
dontbther
Posts: 11
Joined: Mon Mar 12, 2012 4:53 am
Car: 1990 N/A pearl white,auto, , stock

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my battery hit the hood when i went over a bump when i first got it not realizing it wasnt tied down.
i have a 1990 300zx n/a 2+0, stock
the battery had shorted against the hood for about 30seconds.
the car still ran fine but when i got home it wouldnt turn off.
all the accesories stop but the motor keeps running.
i have replaced the battery, alternator, ecu, ignition switch(electric side), most of the relays throughout the whole car even hidden ones behind the fuse box, fuel control computer behind the drivers seat.
i am at a complete loss. i have searched / posted on about 4 different 300zx forums im open to any suggestions thanks.


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sx moneypit
Posts: 8911
Joined: Wed Aug 26, 2009 2:54 am
Car: 2010 Nissan 370Z
1986 Toyota MR2
Location: Memphis,Tn.

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Have you tried unplugging the main engine relay to see if it will shut down?







-Ben

dontbther
Posts: 11
Joined: Mon Mar 12, 2012 4:53 am
Car: 1990 N/A pearl white,auto, , stock

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i probably have but i have never heard of a main relay. if you could be more specific on its location?

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sx moneypit
Posts: 8911
Joined: Wed Aug 26, 2009 2:54 am
Car: 2010 Nissan 370Z
1986 Toyota MR2
Location: Memphis,Tn.

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It is the ECCS relay located in the box at the left front of the car.





-Ben

dontbther
Posts: 11
Joined: Mon Mar 12, 2012 4:53 am
Car: 1990 N/A pearl white,auto, , stock

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If you are referring to the EGI relay then yes . I have replaced it and rechecked it. To make sure it works

dontbther
Posts: 11
Joined: Mon Mar 12, 2012 4:53 am
Car: 1990 N/A pearl white,auto, , stock

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Anyone else?????

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sx moneypit
Posts: 8911
Joined: Wed Aug 26, 2009 2:54 am
Car: 2010 Nissan 370Z
1986 Toyota MR2
Location: Memphis,Tn.

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dontbther wrote:If you are referring to the EGI relay then yes . I have replaced it and rechecked it. To make sure it works
So, when you unplug it the car shuts off ,correct?




-Ben

dontbther
Posts: 11
Joined: Mon Mar 12, 2012 4:53 am
Car: 1990 N/A pearl white,auto, , stock

Post

correct.

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sx moneypit
Posts: 8911
Joined: Wed Aug 26, 2009 2:54 am
Car: 2010 Nissan 370Z
1986 Toyota MR2
Location: Memphis,Tn.

Post

You must have some shorted wiring keeping the relay closed.



-Ben

dontbther
Posts: 11
Joined: Mon Mar 12, 2012 4:53 am
Car: 1990 N/A pearl white,auto, , stock

Post

Yea I'm throwing in the towel and taking it to a mechanic the specializes in electronics.

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sx moneypit
Posts: 8911
Joined: Wed Aug 26, 2009 2:54 am
Car: 2010 Nissan 370Z
1986 Toyota MR2
Location: Memphis,Tn.

Post

Good luck,let us know what he finds .







-Ben


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