no startie vroom vroom

Nissan 300ZX technical discussion forum: Maintenance, performance, installations, modifications, how-to's and troubleshooting.
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canadian booster
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i start my car up after 4 months of sitting, put the battery back in, no problem, fires up great, let her idle like 25 mins and shut it off.. oops, didn't close the drivers door all the way..

come back a couple days ago and the battery is dead from the inside light being on for a while. i put a charger on it, wait 4 hours and try to fire it up, turn the key and she fires up for about 3 seconds and then everything goes black.. so assuming it's the battery i go and mash the negative post coupler on there more, the lights come back, but now when i turn the key, RRrrRrRrRrrRrrr wont start :P

i'm gonna check the relays tonight and see if something blew. i'm at work right now with the negative line off the battery, hopefully that lets the computer reset.. last time this happened the only way to start her back up was a push start and pop the clutch, then everything was totally fine from then on .. hope that's not it because it's winter and i can't push anythign anywhere


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BigTDogg (MA)
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Let the battery charge overnight, then check.

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canadian booster
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k i'll give it a shot, it's the easiest solution by far LoL

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BigTDogg (MA)
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Probably just not enough juice to start.

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canadian booster
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battery charger said green, all good, lots of crank, just no vroom.
checked ecu codes: 55 :P
i'm at a loss.. any thoughts? it's in a garage and it's been unusually warm lately, i doubt it's frozen, maybe something in the fuel line? it was running fine a couple of weeks ago and hasn't moved. when it started yesterday it fired up right away for a few seconds and stopped..

i checked the fuel pump relay, it doesn't look blown, and i've pulled it a couple of times over summer when i was doing compression tests. there's a half tank of gas or more

edit: i'll go pick up a fuel pressure gauge tomorrow and call in sick for work if i have to, any other ideas are welcome!

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canadian booster
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maybe it has to do with the old a** alarm that always blinks whether the car is running or not? maybe it's triggered itself on some kind of disable mode? i don't know the first thing about alarms so bypassing this thing looks like a nightmare if i was to try it as a possibility although it appears there is a ground wire, a red wire going to the steering column (i assume power), and one going to the direction of the ecu, i assume it connects over there somewhere

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BigTDogg (MA)
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*Shudders*

GLWT, I hate figuring out alarms that weren't installed on my watch!

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canadian booster
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i don't even really think that's the problem, buuut we'll see.. i'm really thinking it's fuel related, my last day at work is tomorrow before i move, maybe i'll use a sick day and work my my sick Z

it also really bugs me that the only other time she's ever stalled, the only way to run again was a push start and pop the clutch

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BigTDogg (MA)
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Check voltage at your fuel pump to ensure it's getting juice

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canadian booster
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Ooo good one i'll do that too.. Umm.. Where is it? Ya I know, noob question

edit: it's in the tank? lame :P not sure how i'm gonna check that out, but i'll try

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canadian booster
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AHA! someone with the exact same problem.. battery died, and now car won't start after battery is good again..
random google search wrote:New User Asked -
My battery ran down real low, I've left the lights on before and had to get it jumped but tach lights were always bright like it shut off the lights before it got to bad, just would need a jump. But now battery got almost all the way drained or real close to it, I got someone to jump it and charge it enough to get the lights the tach lights back up to optimum and the ignition sounds like its trying to turn over (like there is enough power for it) but doesn't seem like its getting any fuel is it possible that ther fuel injectors aren't working cause the battery was dead and ecu didn't have any power or could it be from the anti- theft system.
thank you
Nicholas
--------------------------------------------------------------------------------
lot12bass -
check your fuel pump fuse and/or relay. If all else fails, check the wires going into the fuel pump with a test light. You will have to get someone to turn the key on and off for you because the fuel pump will time-out. You may be able to access it under the back seat, if not, check under the car on the back of the fuel tank.

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canadian booster
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i'm trying to search the forums on fuel pump voltage test stuff, but not finding much, it seems like everyone just already knows how to do it, maybe i'm over thinking it, i looked underneath, and thought maybe they ran the wires inside the car, so here's the back.. is the plug on the left for the fuel pump? i assume the one on the right is for hicas ?

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canadian booster
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it's under the spare tire :P
i removed the socket connector and jammed a volometer into it after turning the key to ON, the first time i did it i got a reading on 2 out of the 6 connecters, but nothing since, maybe i'm doing it wrong, i hear the pump go BRRRRRR (or whatever sound it makes) when they goes to ON,
i'm going to the store and buying a fuel pressure gauge, i should own one anyway

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canadian booster
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fuel line pressure after the filter is ~40psi in ON position, and ~50psi when cranking, hard to see from the driver seat, but that's as close as i could make it out. so it looks like fuel is moving

ok what's next? air and ignition? one of my coilpacks has a crack in the plastic, but even so, the damn thing should start on 5 cylinders no? i'll go replace it and see?

and JUST TO BE COMPLETELY SURE i went to the gas station and bought $10 worth of gas and put it into the Z :chuckle:

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canadian booster
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so here's my coilpack.. umm.. ya.. so i replaced it, now she sounds a lot better when cranking, but still no VROOM that i'm looking for..

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canadian booster
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in a bust of frustration i mashed the gas pedal while cranking and swore loudly and it started.. and has been running fine since.. *sigh* oh well, at least now i have a fuel pressure gauge and the coilpack has been fixed LoL

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BigTDogg (MA)
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Weird, but glad it started for you. I was commuting home while you were talking to yourself, sorry. LOL

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canadian booster
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Haha no prob, now there's a record of my crazy afternoon :)

ReconZ
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Glad to see you got it running again. Quick question....if I'm going to let my car sit a while without driving it, would it be a good idea to remove my alarm fuse from under the hood? It was out when I bought the car, but was causing her to throw codes/dash lights. I put it back in, but let her sit for about two weeks without starting her.....dead battery. Is this common?

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canadian booster
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Your best bet is to still disconnect the negative battery cable, then you know for sure nothing will be drawing juice out of it. What happened to me was a weird case of wtf LoL

ReconZ
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Yeah, I've had a couple wtf moments already and it's only been 2 months of owning her. Then again, I have to remind myself that she's a Z lol. Had a few in the past, and apparently time will make you forget some things. Thanks for the advice.

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canadian booster
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Of all the Z forums I've been on, nico is the best and most helpful, people will usually answer any questions with experienced answers


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