2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Fuel Pump not Fuel pumping

Thread Tools
 
Search this Thread
 
Old May 1, 2005 | 02:44 PM
  #1  
rx7 punk's Avatar
Thread Starter
Senior Member
Tenured Member 05 Years
 
Joined: Aug 2003
Posts: 539
Likes: 0
From: Allentown Pa
Fuel Pump not Fuel pumping

After consulting my newly purchased FSM I traced the problem to either the relay or the power supply to the relay, you can hear It click but then nothing, after multi metering I found out that there wasn't any power getting to the relay what could the problem be?
Reply
Old May 1, 2005 | 03:09 PM
  #2  
rx7 punk's Avatar
Thread Starter
Senior Member
Tenured Member 05 Years
 
Joined: Aug 2003
Posts: 539
Likes: 0
From: Allentown Pa
Or if anyone knows which black/ white wire supplies the 12v to the relay that could be useful
Reply
Old May 1, 2005 | 04:16 PM
  #3  
WAYNE88N/A's Avatar
Lives on the Forum
Tenured Member 05 Years
 
Joined: Feb 2004
Posts: 5,721
Likes: 3
From: Coldspring TX
Your pump is supplied by the 15A "eng" fuse. That's your black/ white wire to which you are referring..

You have two coils in the circuit opening relay, one energized by the key's start position, the other by the AFM's door switch. Either coil energized will run the pump...

If you're getting power when the key is held to start, but not after the key is released, suspect either the relay or the AFM door switch. To troubleshoot further, jumper the 2-pin check connector near the AFM & right strut tower, and check for voltage again after the key is released...

If you have voltage at the relay now, the AFM is bad. If you don't have voltage, it's either the relay or an open wire in the circuit...

Backprobe the connector at the left rear strut tower, under the sidewall carpet, the blue wire on the HARNESS side. Leave the plug connected. Check for voltage, to ground...This is your pump's power supply wire. If you're getting voltage back to this point with the key to start OR the AFM open (or check connector jumpered) and the pump's still not running, it's probably the pump, or it's ground, that's bad...
Reply
Old May 1, 2005 | 07:35 PM
  #4  
rx7 punk's Avatar
Thread Starter
Senior Member
Tenured Member 05 Years
 
Joined: Aug 2003
Posts: 539
Likes: 0
From: Allentown Pa
damn thanks lol, ill get on it tonight with the multi meter starting at the key switch working through the circuit
Reply
Old May 1, 2005 | 07:56 PM
  #5  
iceblue's Avatar
Passing life by
Tenured Member 05 Years
 
Joined: Feb 2005
Posts: 4,028
Likes: 2
From: Scotland, USA
Leave it to WAYNE88N/A to solve an electrical issue.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
trickster
2nd Generation Specific (1986-1992)
25
Jul 1, 2023 04:40 PM
Snoopy FD
Build Threads
25
Dec 8, 2015 01:45 PM
82streetracer
1st Generation Specific (1979-1985)
7
Aug 23, 2015 09:28 AM
86glxNA
New Member RX-7 Technical
7
Aug 22, 2015 08:54 PM




All times are GMT -5. The time now is 06:07 PM.