EFI and CO relay, are the bad?? How do I check them?

[bajafgl]

So after doing the paperclip test to see of the fuel pump was working I got a positive response, So the pump is working. Im looking to find the CO relay and the EFI relay, how do I know if they are bad? I did an inicial look for them knowing there general location but came empty. Sorry I dont have an FSM, IM stuck in the middle of Minnesota, far from anthing.

I also checked the fuel cable on the left back quarterpanel, and if looks clean and good.

please help.

 

[slcfj62]

Here is a good thread on troubleshooting the fuel pump and related relays, etc.

https://forum.ih8mud.com/60-series-wagons/367014-fj62-cranks-but-wont-start-bad-fuel-pump.html

See post number six for a description of the location of the EFI and the CO relays.

 

[bajafgl]

the thing is that this guy ran out of gas and burnt the pump. I was unning at 70 mph on the highway, and it died with no warning.

How do I check if the EFI mainrelay is ok, is there something visible when it is not ok?
Same with the CO Relay.

I just found one of the plug wires is shot, could it be as simple as the wires, if this is the case, what should I get apart from plugs, wires, and the dizi cap.

thanks for your patience, I know I can fix it but im in the middle of nowhere with no FSM.

gas

 

[slcfj62]

I think that if you can do the paperclip test with positive results, then that should mean that the wiring, the CO relay, the EFI relay and the EFI fuse are all good. All the paperclip in the test block does is turn everything on. It doesn't provide some other path for voltage to get to the pump. So, maybe your problem is something other than the fuel pump and related circuits. But as a final test, you could loosen one of the banjos at the cold start injector or the fuel pressure regulator just to make sure you get fuel squirting out.

I don't think one bad plug wire would make your engine not run, but if you can replace it, that would probably help for when you get your main problem fixed.

 

[Devils Paw 80]

How do I check if the EFI mainrelay is ok, is there something visible when it is not ok?
..

With a volt/ohm meter, check that there is continuity between terminals 1 and 3. 1 goes to ground, and three is across from it. The other two terminals, 2 and 4, should not have continuity. 4 is the terminal in line with the efi 15A fuse.

When voltage is applied across terminals 1 and 3, there should be continuity between terminals 2 and 4.
These are the two tests specified in the FSM.

 

[bajafgl]

Thanks, Ill post back with some news, hopefull good news.