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 07-09-2017, 10:09 PM   #1
S-Nation S13
Post Whore!
 
S-Nation S13's Avatar
 
Join Date: Jan 2008
Location: LAND of the LOST
Posts: 4,082
Trader Rating: (92)
S-Nation S13 is making his/her stupidity well-knownS-Nation S13 is making his/her stupidity well-knownS-Nation S13 is making his/her stupidity well-knownS-Nation S13 is making his/her stupidity well-known
Feedback Score: 92 reviews
Talking Fuel pump priming issue

The problem is that the fuel pump will prime but it will not cut off like normal.

when turned to ACC the fuel pump activates priming the fuel system (normal) but the abnormal part is that it doesn't cut off (normally after 5 sec. the fuel pump should deactivate)

what causes the fuel pump to cut off? deactivation of the relay?
S-Nation S13 is offline   Reply With Quote
Sponsored Links
Old 07-10-2017, 08:18 PM   #2
Kingtal0n
Post Whore!
 
Kingtal0n's Avatar
 
Join Date: Jul 2005
Location: South Florida
Age: 38
Posts: 4,646
Trader Rating: (17)
Kingtal0n has a reputation beyond reputeKingtal0n has a reputation beyond reputeKingtal0n has a reputation beyond reputeKingtal0n has a reputation beyond reputeKingtal0n has a reputation beyond reputeKingtal0n has a reputation beyond reputeKingtal0n has a reputation beyond reputeKingtal0n has a reputation beyond reputeKingtal0n has a reputation beyond reputeKingtal0n has a reputation beyond reputeKingtal0n has a reputation beyond repute
Feedback Score: 17 reviews
Send a message via AIM to Kingtal0n
Ecu -> relay -> fuel pump

Sometimes people re-wire it to get power from somewhere else. That would keep it on all the time when the key is turned.

The ECU is supposed to turn it on / off though, this is the normal way. Some ECU throw ground to the relay (Sr20det) and some throw 12V (LSx ecu) so it depends what computer you use.
Kingtal0n is offline   Reply With Quote
Old 07-10-2017, 08:44 PM   #3
S-Nation S13
Post Whore!
 
S-Nation S13's Avatar
 
Join Date: Jan 2008
Location: LAND of the LOST
Posts: 4,082
Trader Rating: (92)
S-Nation S13 is making his/her stupidity well-knownS-Nation S13 is making his/her stupidity well-knownS-Nation S13 is making his/her stupidity well-knownS-Nation S13 is making his/her stupidity well-known
Feedback Score: 92 reviews
I was using a stock 62 ecu now in using a power FC but I'm still having the same issue. On ACC fuel pump turns on stays on until I turn to OFF. Which leads me to believe my fuel pump + signal is wired on ACC circuit.


Sent from my iPhone using Tapatalk
S-Nation S13 is offline   Reply With Quote
Reply

Bookmarks

Tags
fuel pump, relay


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 04:19 AM.


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