Question about 1986 Nissan 300ZX

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Security light flashing,

Car starts up then dies, losing ground to fuel pump, turn key off, wait a few seconds, turn key back on, pump runs-builds up fuel pressure, start car,runs afew seconds & dies, but fuel pump won't kick back on untill you cycle the key again. i've tried unlocking the passenger door, still doesnt reset the security system, any suggestions would be greatly appreciated, thanks.

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Battery going bad in key.. need new battery and reprogramed to security system..

Posted on Jan 02, 2014

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2 things bad ground wire on the fuel pump... Check the connector block at the back of the trunk on the right side behind the passenger seat for water intrusion or corrosion.. Clean it and try to seal it from more water intrusion.

And badly worn key.. Easy to fix as this generation doesn't have a "chip to encode" in the key. Just get a new blank from ebay for about $20, and get a good locksmith to jig cut the blank for you (about $35.), you'll find the code in your glove compartment on a label in most cases.

(if these 2 things don't work the fuel pump may be dying and be in need of replacement) FYI: this happened to my 87. The key cut looked completely different than the one i got with the car. And works perfectly. :-D

Posted on Nov 13, 2016


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Posted on Jan 02, 2017

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SOURCE: 1992 nissan maxima security light blinks.wont start fuel pres. ok

get your key recoded

Posted on Sep 11, 2009

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SOURCE: engine was running smoothly, suddenly from the

possible loose ground wire somwhere on engine

Posted on Nov 29, 2009

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SOURCE: Problem is with 2003 Nissan Sentra - was left

Sounds like the fuel pump is bad.... I would have the codes read and start there... but my imediate suspicions are the fuel pump.

Posted on Sep 25, 2010

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SOURCE: I am working on a

how dose it die dose it sputter or just die out right. have the mass air flow checked. I would sugest to invest in a chilitons repair manual for the year and model. You might even get lucky and get one for you local libery.

Posted on Oct 24, 2010

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SOURCE: 89 Nissan Pulsar Cranks but won't START!

id look into injectors and maybe also look into fuel pressure regulator or just fuel pressure in general

Posted on Dec 05, 2012

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1 Answer

Starts then dies & won't restart

check fuel pressure, should be 40 psi.
try 2 things

spray starting fluid in air intake to see if it will stay running. It's fue then.

Try turning key to on nd wait 5 seconds for system to build pressure and pump to shut off. Turn key off, wait for relay clcik noise or 10 seconds. then turn key to ON again and wait 5 seconds to build pressure again. Then start engine. If it starts better, you have a bad check valve in the fuel pump or a bad pressure regulator on the fuel rail (unlikely).

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Is there a security light flashing on the dash? If so you will need to leave the key in the on position for 10 minutes (until it stops flashing) and then turn the key to the off position and wait about a minute. Then turn the key back on and try to start the vehicle. Does your key have a chip in it? You may need a new one if it does. You can try and just clean it off.

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when key on and engine off, does the security light flash constantly? if so its shutting down the fuel pump, it starts momentarily due to the computer priming the engine with fuel. how to reset, turn key to run position, leave it on touch nothing, takes 10-12 minutes, start watching light around 10 minutes. it will stop flashing... turn key off, then back on and start this will reset the security system. they are sensitive on this platform car it will happen again. good luck!

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The theft light issue is a good observation. Have you replaced the key tumbler or an ignition component lately? Has there been a lightning storm close very recently?

What the flashing security light is indicating is an attempt to relearn the key you are using.
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Try that first before you go any further.
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If you turn the key to the run position and listen carefully you should hear the fuel pump come on for a few seconds. If's either a bad pump and or relay. Most have a check valve up on the fuel rail of the motor that is used to check fuel pressure with a gauge. If you hear the pump running and still have a no start you need to hook a gauge to this valve to check fuel pressure. Specs for your exact vechilce can be found on-line. If pressure to low could be clogged fuel filter or pressure regulator...if to high then its the regulator. Been down this road before so I gotta say it...make sure you have fuel in the tank ;-)

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