XJ6 & XJ12 Series I, II & III 1968-1992

First attempt to start after 20 years, where is the fuel cut-off relay??

Thread Tools
 
Search this Thread
 
  #1  
Old 05-11-2018, 01:49 PM
geneo's Avatar
Senior Member
Thread Starter
Join Date: Jun 2011
Location: phx/flg az usa
Posts: 245
Received 73 Likes on 42 Posts
Default First attempt to start after 20 years, where is the fuel cut-off relay??

I've been working on bringing this car back to life for ayear and a half. Replaced a lot of stuff. Hooked up the new battery yesterday; no smoke. With no plugs cranked the engine; spun nicely. Hooked up a plug, cranked again and got spark! Ok, so I'm a happy camper.

Problem: I don't have voltage to the fuel pumps(submersible, rebuilt). I don't have voltage TO the roll-over switch thing. So, next is the "fuel cut-off relay" according to the schematics.

Question: where isthe fuel cut-off relay located?

I'm getting so anxious to see this baby start, and I knowI'm close.

Thanks for the help. Geneo
1977 XJ6C, with downdraft Webers, (and submerged fuel pumps
 

Last edited by geneo; 05-11-2018 at 01:51 PM. Reason: format
  #2  
Old 05-11-2018, 03:48 PM
studentper's Avatar
Member
Join Date: Jul 2015
Location: Kansas
Posts: 97
Received 13 Likes on 8 Posts
Default

I don't know if it's the same thing, but on my 1987 xj6, the fuel cutoff switch is on the very edge/outside of passenger side of the dash visible only when the door is open. Down is on, up is off.
 
  #3  
Old 05-11-2018, 04:02 PM
geneo's Avatar
Senior Member
Thread Starter
Join Date: Jun 2011
Location: phx/flg az usa
Posts: 245
Received 73 Likes on 42 Posts
Default

thanks, that's what I called the roll-over switch and mine is there also. after further investigation, I don't believe on my Series II car there is a fuel cut-off relay. I now believe the voltage goes directly from the ignition switch through the roll-over switch to the tank choice switch and on directly to the fuel pumps.


anybody agree with that??
geneo
 
  #4  
Old 05-12-2018, 09:19 AM
JagCad's Avatar
Veteran Member
Join Date: Jul 2012
Location: Walnut Creek, California
Posts: 6,796
Received 2,399 Likes on 1,880 Posts
Default

That makes sense.


So, next, with the ignition on, use a VOM or test lamp and see if there is voltage at the pump in the boot.


And.as you needed the schematic to ID the supply connection at the pump, jump 12 v to it and see if the pump activates.


Or before that, again tot he schematic, Id the fuel pump relay.. Most cars have them. Relays can fail or more likely the connects corrode and become non conductive. At time, merely a connect/disconnect sequence do a few times fixes them!!


Carl
 
  #5  
Old 05-12-2018, 03:47 PM
geneo's Avatar
Senior Member
Thread Starter
Join Date: Jun 2011
Location: phx/flg az usa
Posts: 245
Received 73 Likes on 42 Posts
Default

thanks Carl. I have continuity from the pump to the tank selector switch and on to the inertia switch. All those wires should get voltage with the key on, but I can't seem to get voltage TO the inertia switch and cannot find where that wire goes. The schematic shows it going to a connection of White wires and then on directly to the key switch. My schematic shows no pump relay. Although I just found this unidentified relay securely screwed to the outside of the dash support on the passanger side. Does anyone know what that is??
 
Attached Thumbnails First attempt to start after 20 years, where is the fuel cut-off relay??-img_20180512_131952127.jpg   First attempt to start after 20 years, where is the fuel cut-off relay??-img_20180512_131941213.jpg   First attempt to start after 20 years, where is the fuel cut-off relay??-img_20180512_131855339.jpg  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Bowmanconsult
XK8 / XKR ( X100 )
10
01-08-2024 02:23 AM
Debbie Bean
XK8 / XKR ( X100 )
1
07-28-2016 07:41 PM
archieeverton
S-Type / S type R Supercharged V8 ( X200 )
2
11-16-2014 05:39 AM
ecarp
XJ XJ8 / XJR ( X308 )
2
03-24-2013 01:41 PM
200Volts
XJ XJ6 / XJ8 / XJR ( X350 & X358 )
14
12-21-2012 10:24 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


Quick Reply: First attempt to start after 20 years, where is the fuel cut-off relay??



All times are GMT -5. The time now is 03:38 AM.