Go Back  ZDriver.com > Cars > 300ZX (Z32) Forums
Electrical issue with fuel system. Need help >

Electrical issue with fuel system. Need help

300ZX (Z32) Forums Dedicated to 90-96 ZCars otherwize known as the Z32's

Electrical issue with fuel system. Need help

Old 04-29-2017, 06:19 PM
  #1  
Registered User
Thread Starter
 
Join Date: Apr 2017
Posts: 1
Electrical issue with fuel system. Need help

I'm the proud new owner of a 107000 mile nissan 300zx twin turbo, but I will say so far the relationship hasn't been pleasant. When I purchased the car previous owner stated it needed a fuel pump it ran, but took some time after started to run correctly. Long story short I believe I have an electrical issue. I can say without a doubt that the fpc is shot, when bypassed the car fires right up and runs great, but here is the kicker in the process of diagnosing this issue I have seemed to lost signal from the ecu to the fuel pump relay. (Pin 18). With some more diggin I found that from the relay back to the ecu I'm getting voltage and not ground. It's my understanding that the ecu sends a ground signal to relay. I have all the proper voltages at the relay. When I manually ground pin 18 relay clicks in and pump primes. Why would I be getting voltage back from the relay into the ecu?
Blackbettytt is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
ZeeDeveel
300ZX (Z32) Performance / Technical
0
10-07-2013 02:25 PM
RonK
240Z, 260Z, 280Z (S30) Forums
6
02-11-2013 08:48 PM
z31rider
300ZX (Z31) Forums
7
12-25-2009 01:34 PM
WichitaZRide
300ZX (Z32) Performance / Technical
3
07-02-2005 06:55 PM
dapper189
300ZX (Z31) Performance / Technical
0
05-21-2005 05:30 PM


Thread Tools
Search this Thread
Quick Reply: Electrical issue with fuel system. Need help


Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.