200sx help

OK few months ago I picked up a new daily a 95 200sx ser now the only thing it needed was a new crank pulley because the factory one was split in half.. dunno how that happens but what eves.. i get the pulley replaced everything goes good and easy.. start the car and it runs fine like normal.. well i figured while i have the hood up i would top off all the fluids.. topped off the anti freeze and i guess i didn't put the cap back on all the way. and didn't notice it right away and some antifreeze drips on the alternator and starts killing the battery right away and only last for maybe a hour and dies so im like wtf? so i clean the alt but car wont start.. get the alt tested and its bad so i replace. hook everything up charge the battery and it runs for maybe half a second and then starter just spins. so i replace starter get a new battery because the old one was soo dead. turn key and runs awesome.. drive it for 2 days while all this time the battery light was on the dash and it ran fine and all the acc were working properly on the 3rd day driving it i came out started it and it started and ran like normal go get my hair cut come back out and click.. nothing everything was dead. so i got a jump and sat there for half a hour and i wasn't getting anything back.. so i end up dragging it home while im dragging it i figured i would try to drop the clutch and try to start it nothing.. i can hear the motor spinning and wining and very little sound from the exhaust but it wouldn't start and run no matter how long i held it in 1st gear while dragging.. so new battery new crank pulley new alt and new starter,, I really don't want to junk this car..it ran prefect before the antifreeze dripped on the alt. so does anyone have any tips for me? I really appreciate it.. Thanks

SO what is your voltage when the car is running? I would hope anybody who saw a battery light on their dash would do that as the very first step in troubleshooting before throwing parts it it....
I'm going to be a mullet guy diagnosing over the internet and say your alternator isn't putting out anything anymore and you ran for a few days off battery power since you likely didn't drive that far so it took a few days for it to discharge all the way. Yes I saw that you replaced the alternator so if the one you put in is indeed good and you installed it properly you should be fine unless your alternator fuse is blown or something along those lines.

it is possible that you got a bad "new" alternator. I've seen it before more than once.

dont junk it either i could use it for parts lol.

It's not going to bump start if the battery is totally dead, its a fuel injected car.

verify battery is healthy and at a full state of charge.

start vehicle and use DVOM to check output voltage AT alternator. (should see approx 12.5-14.5 volts.) Make sure its set to DC V

if its less then that then you have a bad alternator or possible bad connection at alt plug or wiring. the alternator needs voltage from the pcm to work properly. so if there is a bad pcm or high resistance /open it can cause a "bad alternator". coolant could have "contaminated" the connection or just you unplugging it could have cuased an issue.

if the voltage output is within 12.5-14.5ish then next is to voltage drop from the alternator to the positive battery post. should see no more then say 0.3 volts. also check for good ground between alternator and engine and battary to chassis.


Chargin system Diag 101 completed for today!

Thats what everyone keep telling me is i have a bad "new" alt.. ive checked the grounds and it killed a brand new battery so the battery WAS good and i checked alt fuse. and yea i know about push starting it if the batter is dead but i wanted to see if the atl would make enough power to start by it self.. idk lol next thing i cant think of is go over the grounds once more and if anything pull it back out and go have it tested I still have a warranty..

yea theres a few times i have gotten a bad "new" alt, along with a bad "new" starter (not saying thats your problems) just saying that it does happen

j240sxxx wrote:

Thats what everyone keep telling me is i have a bad "new" alt.. ive checked the grounds and it killed a brand new battery so the battery WAS good and i checked alt fuse. and yea i know about push starting it if the batter is dead but i wanted to see if the atl would make enough power to start by it self.. idk lol next thing i cant think of is go over the grounds once more and if anything pull it back out and go have it tested I still have a warranty..

I didn't catch it so what was the voltage with the car running? I would hope you'd check that before pulling the alternator again.

SHOTGUN PARTS


SHOTGUN PARTS



FUCK ACTUAL DIAGNOSIS!

I will buy this car for $100. End of problem.

$101 here...

I go hard 120 hard cold cash ...mmmMMMm

121

hmm.. anyways no i didnt think to look at the voltage I was just happy it ran.. right now it wont start so idk the voltage. i put a new charged battery in it and now the head lights turn on by them selves and the horn beeps like someone is holding it down.. cant be the ecu could it? or is the main harness fried?

Sounds like a short somewhere. You need to inspect it.

Sell me the ser and for 121.50 and ill figure out the prob ha

damn that doesn't sound good. sounds like what 600sx said. harness problems. seriously if you want to sell it let me know. i kinda need some parts from it.