Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Go Back   Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum > General > Tech Talk

Tech Talk Technical Discussion About The Nissan 240SX and Nissan Z Cars


Reply
 
Thread Tools Display Modes
Old 03-04-2021, 02:50 PM   #1
Shaker.Est.84
 
Join Date: Jan 2018
Location: New Brunswick, Canada
Age: 36
Posts: 36
Trader Rating: (0)
Shaker.Est.84 is an unknown quantity at this point
Feedback Score: 0 reviews
I don't know how to fix what I broke :(

Hi All,

Hope everyone is well

The car is a 1995 240SX Zenki USDM. I have an S13 Blacktop SR20DET in it.
I wanted to see if the car would turn over from the key. I hooked up the battery and then tried the key. What I got was a clicking sound from the drivers side foot well fuse box but no engine cranking. I did charge the battery completely before trying this so I could rule a dead battery out right away. I removed the 2 ignition relays from the fuse box and verified they functioned properly. I then though I could jump the ignition relay to send a signal to the starter but this is where I messed up. I jumped the wrong terminals in the relay and it sparked, after that when I turn the key there is no more clicking as well no dash lights but there are headlights and brake lights working. The ignition relays were not installed when I shorted the terminals.

I checked ALL fuses on the drivers side and the ones under the hood. There is still 12v signal at the relay terminal.

The engine will turn over if I jump the starter to the battery but will not start.

Does anyone have a possible idea on what I may done/broke?

Thanks for your advice in advance, Cheers
Shaker.Est.84 is offline   Reply With Quote
Sponsored Links
Old 03-04-2021, 03:56 PM   #2
s13silvia123
Post Whore!
 
s13silvia123's Avatar
 
Join Date: May 2006
Location: where waldo is
Age: 39
Posts: 3,256
Trader Rating: (16)
s13silvia123 is close to perfections13silvia123 is close to perfections13silvia123 is close to perfections13silvia123 is close to perfections13silvia123 is close to perfections13silvia123 is close to perfections13silvia123 is close to perfections13silvia123 is close to perfections13silvia123 is close to perfections13silvia123 is close to perfections13silvia123 is close to perfection
Feedback Score: 16 reviews
check ecu if you shorted it.
__________________
18g and 20g turbo users click on me
http://zilvia.net/f/tech-talk/261219-18g-20g-turbo-users.html

s13silvia123 is offline   Reply With Quote
Old 03-04-2021, 06:03 PM   #3
Silv1401
Zilvia Member
 
Silv1401's Avatar
 
Join Date: Jan 2019
Location: Vancouver, WA/Portland, OR, USA
Posts: 166
Trader Rating: (1)
Silv1401 is an unknown quantity at this point
Feedback Score: 1 reviews
Yeah probably shorted ecu. Your original issue however sounded like it could be fuel pump relay/fuse, which would also explain your lack of firing up.

Sent from my SM-N986U1 using Tapatalk
Silv1401 is offline   Reply With Quote
Old 03-04-2021, 06:17 PM   #4
kennedy8383
Zilvia Member
 
kennedy8383's Avatar
 
Join Date: Feb 2012
Location: Kanada
Age: 37
Posts: 210
Trader Rating: (1)
kennedy8383 is an unknown quantity at this point
Feedback Score: 1 reviews
Does the cel come on while turn ignition switch? Do you hear fuel pump? Mostly likely the ecu is cook.
kennedy8383 is offline   Reply With Quote
Old 03-04-2021, 06:45 PM   #5
Shaker.Est.84
 
Join Date: Jan 2018
Location: New Brunswick, Canada
Age: 36
Posts: 36
Trader Rating: (0)
Shaker.Est.84 is an unknown quantity at this point
Feedback Score: 0 reviews
Thanks for the replies,

No the fuel pump is not coming on anymore, No more dash lights.
Shaker.Est.84 is offline   Reply With Quote
Old 03-07-2021, 04:17 AM   #6
mechanicalmoron
Zilvia FREAK!
 
Join Date: Jul 2013
Location: tx
Posts: 1,072
Trader Rating: (0)
mechanicalmoron is just really nicemechanicalmoron is just really nicemechanicalmoron is just really nicemechanicalmoron is just really nicemechanicalmoron is just really nicemechanicalmoron is just really nicemechanicalmoron is just really nicemechanicalmoron is just really nice
Feedback Score: 0 reviews
Does it get cranking signal from the PCM? Even if so, putting 12 back on that wire is (IME, not as an engineer or anything) harmless, and unless the PCM was actively trying to actuate it you can't have shorted a PCM output to ground.



I know nothing, just spitballing here.
mechanicalmoron is offline   Reply With Quote
Old 03-13-2021, 04:20 PM   #7
Shaker.Est.84
 
Join Date: Jan 2018
Location: New Brunswick, Canada
Age: 36
Posts: 36
Trader Rating: (0)
Shaker.Est.84 is an unknown quantity at this point
Feedback Score: 0 reviews
Figured it out yesterday, The 30A fuse under the hood was blown but I did not see that it was blown the first time around checking. So after that the car still would not turn over. I checked to make sure power was going where it should then noticed that the clutch safety switch was attached to the clutch pedal but the wire from the harness to connect it is nowhere that I can see. I removed the relay for the clutch under the hood then ran a jumper on the relay and it cranked �� Looks like I might be able to start it soon. I have to double check the connections on the Diftech coolant lines to the turbo, make sure they are in the right order. I am also waiting on a fitting for the block so I can connect the Diftech oil feed line to the turbo.
Shaker.Est.84 is offline   Reply With Quote
Old 03-16-2021, 07:49 AM   #8
jedi03
Nissanaholic!
 
Join Date: Jul 2008
Location: albuquerque
Posts: 1,784
Trader Rating: (8)
jedi03 is on a distinguished road
Feedback Score: 8 reviews
glad to see got figured out! ex gf had partially blown main fuse, looked like was good but when pulled cover off I was able to use my test light and felt the need to prod it where I saw it was not fully connected, was able to make connections sometimes but would randomly die
jedi03 is offline   Reply With Quote
Reply

Bookmarks


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -6. The time now is 06:51 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
vB.Sponsors
Copyright © 1998 - 2019, Zilvia.net™