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 12-21-2012, 07:26 AM   #1
Briou
Zilvia Member
 
Briou's Avatar
 
Join Date: Jun 2011
Location: Bay St. Louis, MS
Age: 29
Posts: 182
Trader Rating: (3)
Briou is an unknown quantity at this point
Feedback Score: 3 reviews
Fuel Pump Working Sometimes...Need Help

Ok so I have searched and found tons of stuff about fuel pump problems but nothing quite the same as the problem I am running into....so here it is


Having a problem with my fuel pump....this is in my 93 240sx with an sr swap with the AEM computer...When ever I go to start my car the fuel pump doesn't prime...It will kick on once in about every 30 tries and once the car is started the pump runs as it is supposed to....I figured out that if I have the key in the ignition and turned to the on position, then I pull the ing switch fuse and replace it the pump will kick on...I have tested the voltage at the pump when I key on and it hits 13v for a second then immediately drops to 7.6ish...I am charging the battery now to see if that will change anything but until then does anyone have an idea of what might be going on?
Briou is offline   Reply With Quote
Sponsored Links
Old 12-22-2012, 08:06 PM   #2
Briou
Zilvia Member
 
Briou's Avatar
 
Join Date: Jun 2011
Location: Bay St. Louis, MS
Age: 29
Posts: 182
Trader Rating: (3)
Briou is an unknown quantity at this point
Feedback Score: 3 reviews
Update: I got the batt fully charged and nothing changed....I found out there is some sort of aftermarket alarm system that is tied into my ignition harness so I am in the process of pulling that out...hopefully I can find a solution soon...
Briou is offline   Reply With Quote
Old 12-22-2012, 09:46 PM   #3
davirene
Zilvia Addict
 
davirene's Avatar
 
Join Date: Sep 2006
Location: Yucaipa, ca
Posts: 600
Trader Rating: (21)
davirene is just really nicedavirene is just really nicedavirene is just really nicedavirene is just really nicedavirene is just really nicedavirene is just really nicedavirene is just really nicedavirene is just really nicedavirene is just really nice
Feedback Score: 21 reviews
Just throwing this out there.....had a problem with a ka starting very similar.....turned out the tumblers were wore out in the ignition switch.

So I bought a new one and had it keyed for my car and bam starts right up....

I am not sure what your problem is...but it dont hurt to check it out....

good luck
__________________
wanted:filter relocation, front Coilover, Brake, Rims,seats,quick release
davirene is offline   Reply With Quote
Old 12-22-2012, 10:15 PM   #4
Briou
Zilvia Member
 
Briou's Avatar
 
Join Date: Jun 2011
Location: Bay St. Louis, MS
Age: 29
Posts: 182
Trader Rating: (3)
Briou is an unknown quantity at this point
Feedback Score: 3 reviews
Ok cool...thats what my tuner suggested...where did you find a new ignition switich?
Briou is offline   Reply With Quote
Old 12-24-2012, 10:19 AM   #5
Briou
Zilvia Member
 
Briou's Avatar
 
Join Date: Jun 2011
Location: Bay St. Louis, MS
Age: 29
Posts: 182
Trader Rating: (3)
Briou is an unknown quantity at this point
Feedback Score: 3 reviews
Replaced the ignition switch and nothing changed...really scratching my head on this one....
Briou is offline   Reply With Quote
Old 12-29-2012, 12:13 PM   #6
davirene
Zilvia Addict
 
davirene's Avatar
 
Join Date: Sep 2006
Location: Yucaipa, ca
Posts: 600
Trader Rating: (21)
davirene is just really nicedavirene is just really nicedavirene is just really nicedavirene is just really nicedavirene is just really nicedavirene is just really nicedavirene is just really nicedavirene is just really nicedavirene is just really nice
Feedback Score: 21 reviews
I got the switch from the dealership.....

I would say to check your grounds.....make sure there clean with no rust or grime buildup.

See if you can run a hotwire straight to the fuel pump..... just to see if it stays on???
__________________
wanted:filter relocation, front Coilover, Brake, Rims,seats,quick release
davirene is offline   Reply With Quote
Old 01-28-2013, 11:34 AM   #7
Briou
Zilvia Member
 
Briou's Avatar
 
Join Date: Jun 2011
Location: Bay St. Louis, MS
Age: 29
Posts: 182
Trader Rating: (3)
Briou is an unknown quantity at this point
Feedback Score: 3 reviews
I checked the grounds and running a hot wire to the pump works...it is something between the ignition and the computer, or the computer and the pump....I just don't get why it will kick on every time if i pull and replace the ign switch fuse....
Briou is offline   Reply With Quote
Old 01-28-2013, 11:55 AM   #8
Mikester
Nissanaholic!
 
Mikester's Avatar
 
Join Date: Jun 2007
Location: Kathleen, GA
Age: 50
Posts: 1,938
Trader Rating: (0)
Mikester is a well-known jackass
Feedback Score: 0 reviews
Did you try a fresh new fuse? Sounds dumb, but it's cheap & at this point; you got nothing to lose. Also, you may have a flaky connection on the back side of one of the fuse sockets where removing/replacing fuse sort of jimmys it... If it works when you mess with the fuse, that may be the best place to start.
__________________
Mikester is offline   Reply With Quote
Old 01-28-2013, 08:38 PM   #9
zombiewolf513
BANNED
 
Join Date: Mar 2011
Location: AZ
Age: 33
Posts: 1,682
Trader Rating: (6)
zombiewolf513 zombiewolf513 zombiewolf513 zombiewolf513 zombiewolf513 zombiewolf513 zombiewolf513 zombiewolf513 zombiewolf513 zombiewolf513 zombiewolf513
Feedback Score: 6 reviews
How old is the fuel pump?

I had a similar issue, sometimes I'd hear it prime, sometimes I wouldn't.

I changed to a Walbro and fixed it.
zombiewolf513 is offline   Reply With Quote
Old 02-12-2013, 10:13 PM   #10
Briou
Zilvia Member
 
Briou's Avatar
 
Join Date: Jun 2011
Location: Bay St. Louis, MS
Age: 29
Posts: 182
Trader Rating: (3)
Briou is an unknown quantity at this point
Feedback Score: 3 reviews
Mikester: I will have to try that...never really thought of just replacing the fuse to see if that would fix it but what you were saying makes sense.

zombie: I had a walbro in it when this started happening...changed it out and it still does the same thing....
Briou is offline   Reply With Quote
Reply

Bookmarks

Tags
fuel, not working, pump, s13


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 03:45 AM.


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