1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Where's the fuel pump cut relay on GSL-SE?

Thread Tools
 
Search this Thread
 
Old 05-30-10, 11:05 PM
  #1  
Senior Member

Thread Starter
 
Whisper's Avatar
 
Join Date: Sep 2008
Location: Seattle, WA
Posts: 622
Likes: 0
Received 0 Likes on 0 Posts
Where's the fuel pump cut relay on GSL-SE?

I just spent an hour looking for it under the dash... In other threads it says it's on the right side of the steering column, and there's even a diagram in one of them, and I see nothing of the sort. Is it somewhere else on these cars?

I'm asking because my fuel pump runs when the key is on, so I think someone must have jumped it at some point.
Old 05-30-10, 11:09 PM
  #2  
Super Moderator

iTrader: (3)
 
gsl-se addict's Avatar
 
Join Date: Jan 2003
Location: Lynchburg, VA
Posts: 5,088
Likes: 0
Received 11 Likes on 11 Posts
It is under the passenger floor carpet next to the ECU.
Old 05-30-10, 11:10 PM
  #3  
Senior Member

Thread Starter
 
Whisper's Avatar
 
Join Date: Sep 2008
Location: Seattle, WA
Posts: 622
Likes: 0
Received 0 Likes on 0 Posts
Wait, is it the circuit opening relay?
Old 05-30-10, 11:28 PM
  #4  
Super Moderator

iTrader: (3)
 
gsl-se addict's Avatar
 
Join Date: Jan 2003
Location: Lynchburg, VA
Posts: 5,088
Likes: 0
Received 11 Likes on 11 Posts
Right. Same thing.

You can kind of see it in one of the pics here (almost out of view, bottom of pic):

https://www.rx7club.com/1st-generation-specific-1979-1985-18/back-fb-looking-crash-course-all-things-gsl-se-713658/page5/

If the pump is running all of the time when the key is on, there may be a jumper wire in the connector used to test the fuel pump. Look under the hood near the AFM. There should be a connector that is not plugged into anything that has a black rubber boot over it. If there is a wire connected between the two terminals, the pump will run whenever the key is on. If there is a wire there, unplug it and everything should work like normal. Another possibility is the AFM door is not closing all of the way and this will cause the same behavior.

Another possibility is that the PO had some problem with the relay and either jumped it or more likely ran a new power source to the pump because they didn't know how to fix it.
Old 05-31-10, 03:45 AM
  #5  
Senior Member

Thread Starter
 
Whisper's Avatar
 
Join Date: Sep 2008
Location: Seattle, WA
Posts: 622
Likes: 0
Received 0 Likes on 0 Posts
Probably the last one, since there are no jumpers or anything of the sort anywhere, and AFM is fine. Which is why I thought there was a separate relay. But I guess GSL-SE is different.

How can find where the power source is "hacked in", if that is indeed what's happening?
Old 05-31-10, 08:41 AM
  #6  
Super Moderator

iTrader: (3)
 
gsl-se addict's Avatar
 
Join Date: Jan 2003
Location: Lynchburg, VA
Posts: 5,088
Likes: 0
Received 11 Likes on 11 Posts
I would look at the wiring at the pump and also pull the driver storage bin and look at the wiring in there. Look for anything that doesn't look stock.

I agree that the last one on the list is the most likely. Many times people don't understand how to test things and they hate wiring diagrams, so if something doesn't work, they just run a new power source.

I guess the other possibility would be that the circuit opening relay is stuck closed, so it is completing the circuit whenever the key is on. Not likely, but might be something to test if the pump wiring looks stock.
Old 05-31-10, 01:54 PM
  #7  
Senior Member

Thread Starter
 
Whisper's Avatar
 
Join Date: Sep 2008
Location: Seattle, WA
Posts: 622
Likes: 0
Received 0 Likes on 0 Posts
Ok, I'll check over there.

I tried two different relays, same result, so I think it's a wiring hack. That or the wire that turns the relay on is grounded somewhere it shouldn't be...
Old 06-14-10, 08:30 AM
  #8  
Senior Member

Thread Starter
 
Whisper's Avatar
 
Join Date: Sep 2008
Location: Seattle, WA
Posts: 622
Likes: 0
Received 0 Likes on 0 Posts
Alright, found the jumper wire. Finally had a chance to look under the cubby bin, and there it was. I hate it when people do ghetto fixes like that, and don't relay the info to new owners. It's all good now. Thanks for your help.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
trickster
2nd Generation Specific (1986-1992)
25
07-01-23 04:40 PM
alphawolff
1st Generation Specific (1979-1985)
17
11-17-15 05:57 PM
ChrisRX8PR
Single Turbo RX-7's
21
10-18-15 04:01 PM



Quick Reply: Where's the fuel pump cut relay on GSL-SE?



All times are GMT -5. The time now is 10:29 PM.