Nissan 300zx z32 ignition fuse keeps blowing

Nissan 300ZX technical discussion forum: Maintenance, performance, installations, modifications, how-to's and troubleshooting.
Aaron8798
Posts: 2
Joined: Wed Jun 26, 2019 1:59 pm
Car: 1990 Nissan 300zx z32 n/a manual 2+2

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My main ignition fuse under the bonnet keeps blowing and was wondering the best things to check


macgiver
Posts: 1612
Joined: Wed Jul 04, 2007 10:21 am

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If you can get to the starter, under frame ,locate ignition wire that "energizes" the solenoid and remove it.
This better be done AFTER Neg batt term disconnected for safety , safe-off by taping loose wire , re-connect battery and turn key to start . You have eliminated solenoid Short ckt. Continue by removing successive relays upstream as you go , Schematic a must.
TIP - buy those Ckt-Braker fuses that reset ,if size available, $4 ea ? Saves Blowing all those "test fuses" :rotflmao
Use your ears to listen for any sparking , your nose - sniff out smoke/hot wires as precaution as you go,anytime connecting a "jumper" from B+( Battery Voltage) - have a FUSE IN SERIES to your test destination.Lastly , never use larger fuses into the fusebox - you WILL smell smoke/see fire ! :lolling:


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