1984 Z31 Wont Start up

A home for 1983–1989 300ZX owners!
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ZasslefraZ31
Posts: 4
Joined: Tue Oct 30, 2012 9:05 am
Car: 1984 Nissan 300zx N/A
Location: Roanoke, TX

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i own a 1984 300zx Non-Turbo bought it for 2850$ around december of 2012 only real problem besides the mound of bondo on the previous bumper was high idle 1200 rpm idle cold 1000 rpm idle warm and temp gauge never in the middle (stuck thermostat probably) .

i'm half way between front end conversion (84 to 88) car is all black just bought a tbo replica lip a month or so ago bumper hood and headlights are red.

Down to business: i've been trying to fix this for weeks, i happened a few days after a monsoon of a rainstorm t-tops leak, hood was off (body work) and windows were cracked 2 or 3 inches: about halfway through the storm i did my best to wrap the distibutor and cold air and cracked windows in trash bags (Because i forgot my keys in haste to get to my car). Drove it home the same day while still raining :tisk: with absolutely no problems (other than soaked to the bone). a few days after it took a few seconds longer to fire up. Same day after school approximately 5 hours sitting in the parking lot. i spent 10 minutes or so trying to fire it up when finally started (no hood still :frown: ). i got about a mile down the road hit a redlight and it just quit no sputter or any strange noises just stalled.i had power it would crank fine had all lights also but wouldnt even try to fire. got my dad to tow it back to school, sat there for a week (no hood). a week or so after a friends dad towed it to his house been sitting there since (been weeks)

Since then:
Replaced ignition coil ( because i wasnt getting spark through the coil wire)
remanufactured ECU


the coil i replaced the day after

ECU was a few days ago after it rained a few more times (windows up :woot: )
checked:
fuses
fuible links
relays
ECU (when i try to pull codes the LEDs wont even give me an all clear)
-obviously no power

ALSO:
replacing the dash because it was torn to bits and pieces dash is from and 87 z31 white face analog w/ black


I have used and abused her she needs to run wild again
any help is appreciated :bowrofl:
be glad to clear anything up the may be confusing


User avatar
evildky
Posts: 14225
Joined: Sat Jan 31, 2004 9:23 pm
Car: 71 Datsun 240ZT
87 Nissan 300ZX N/A-T
06 Nissan 350Z GT
Toyota Tundra TRD RW
Location: Louisville, KY
Contact:

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There is a LOT of wiring in the Z31. Buy or DL the FSM and start studying, Sounds like you're on the right track. Power to the ecu si likely the cause of your issues you just have to cheack all the potential points of failure along the way.

User avatar
ZasslefraZ31
Posts: 4
Joined: Tue Oct 30, 2012 9:05 am
Car: 1984 Nissan 300zx N/A
Location: Roanoke, TX

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FSM? OK. I am guessing your are talking about the Master wiring diagram or some such I have that somewhere, ill get down to business. Thanks for the guidance

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Ace2cool
Posts: 11650
Joined: Sun Apr 20, 2008 5:21 pm
Car: 1991 Nissan 300ZX TT
1966 Datsun Fairlady 1600
2005 Suzuki GSX-R 600
1974 Honda CB550 Four
2009 Ford F150 Lariat
Location: Murfreesboro, TN

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Factory Service Manual.

http://www.nicoclub.com/FSM/300zx/


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