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 > S Chassis

S Chassis Technical discussion related to the S Chassis such as the S12, S13, S14, and S15.


Reply
 
Thread Tools Display Modes
Old 07-05-2013, 10:22 PM   #1
2_Liter_Turbo
Premium Member
 
2_Liter_Turbo's Avatar
 
Join Date: Mar 2005
Location: Arizona
Age: 37
Posts: 798
Trader Rating: (28)
2_Liter_Turbo is a jewel in the rough2_Liter_Turbo is a jewel in the rough2_Liter_Turbo is a jewel in the rough2_Liter_Turbo is a jewel in the rough2_Liter_Turbo is a jewel in the rough2_Liter_Turbo is a jewel in the rough2_Liter_Turbo is a jewel in the rough
Feedback Score: 28 reviews
Question Having some electrical issues... curious if anyone ran across this before...

I'm having a little electrical trouble, and can't seem to pin-point the problem. Curious if anyone else has ran into this, and if so, if they found a solution...

This involves my 92 240SX with an SR20DET running on AEM EMS:

I turn the ignition switch to the full "on" position to run the fuel pump (engine not running of course). And the tachometer jumps around 500 to 1000 RPM, bouncing with the fuel pump signal. Pull the fuel pump fuse, and it sits still. So far I've checked all grounds in the engine bay and the ECU, and everything is good there. I'm assuming it's a grounding issue. Tomorrow I plan to cut the fuel pump ground and ground it separately through the chassis (been meaning to do this anyways). If it's not that however, I'm out of ideas.

Any suggestions?
__________________
96 S14: Grip Track Car
90 R32: Bucket List Car
92 S13: Just for Fun Car
Instagram: @SS.Maxey
2_Liter_Turbo is offline   Reply With Quote
Sponsored Links
Old 07-23-2013, 03:43 PM   #2
RACETUNE
Zilvia Member
 
RACETUNE's Avatar
 
Join Date: Jun 2004
Location: San Francisco & Los Angeles
Age: 45
Posts: 238
Trader Rating: (0)
RACETUNE is on a distinguished road
Feedback Score: 0 reviews
Send a message via AIM to RACETUNE
PM me or Email me if you are still stuck.

[email protected]
__________________
-Garage BOSO-
-Racetune Engineering-
RACETUNE is offline   Reply With Quote
Old 07-23-2013, 03:46 PM   #3
e1_griego
Premium Member
 
e1_griego's Avatar
 
Join Date: Sep 2004
Location: Independence, Ore.
Age: 36
Posts: 2,642
Trader Rating: (24)
e1_griego has a reputation beyond reputee1_griego has a reputation beyond reputee1_griego has a reputation beyond reputee1_griego has a reputation beyond reputee1_griego has a reputation beyond reputee1_griego has a reputation beyond reputee1_griego has a reputation beyond reputee1_griego has a reputation beyond reputee1_griego has a reputation beyond reputee1_griego has a reputation beyond reputee1_griego has a reputation beyond repute
Feedback Score: 24 reviews
Just to follow up (since he might not see this and reply) he posted this on our local forum:

Quote:
It turns out that when I had the engine harness done back in 2005, that the people who did it had the ECU, o2 Sensor, and two other wires all powered off of one switchable 12V source. The ECCS relay wasn't actually doing anything! So I moved the ECU power back on the ECCS relay circuit, and everything works great now. Took a lot of continuity testing to find that one, ha ha.
e1_griego is offline   Reply With Quote
Old 07-23-2013, 10:10 PM   #4
2_Liter_Turbo
Premium Member
 
2_Liter_Turbo's Avatar
 
Join Date: Mar 2005
Location: Arizona
Age: 37
Posts: 798
Trader Rating: (28)
2_Liter_Turbo is a jewel in the rough2_Liter_Turbo is a jewel in the rough2_Liter_Turbo is a jewel in the rough2_Liter_Turbo is a jewel in the rough2_Liter_Turbo is a jewel in the rough2_Liter_Turbo is a jewel in the rough2_Liter_Turbo is a jewel in the rough
Feedback Score: 28 reviews
Thanks Alex. On vacation, so not at the PC much this week, lol.
__________________
96 S14: Grip Track Car
90 R32: Bucket List Car
92 S13: Just for Fun Car
Instagram: @SS.Maxey
2_Liter_Turbo 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 09:43 PM.


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