red86rx7gxl

Hello noobie here!



I have a 1986 GXL and it has some fuel delivery issues. I have tested the fuel pump on the battery and it is making a nice whirring noise, the fuse is good, but I am still getting nothing. I tested the fuel pump relay on the driver's side under the hood and I have 12v going in but nothing coming out. I tried using a test light on it as well but it never came on. Has anyone else ever tested this relay and am I doing something wrong when testing it? I bought a new one and it is giving the same readings. I know that it is possible that I received a defective relay but I just want to make sure that I am testing it correctly. Sorry if this is a question that has been asked before but I haven't been able to find any on it.



Thanks in advance,

Jerry

red86rx7gxl

Okay...I was told by a mechanic that the relay not functioning properly could be caused by a bad ground. I will search for my grounds, clean them up and see if that fixes the problem. I will let you all know how it goes...from there I will hopefully have a running car!



Jerry

j9fd3s

also check the "circuit opening relay" under the dash, thats the one that is actually more like what we would call a fuel pump relay

red86rx7gxl

Thanks for the reply, I will check that out. I guess the one that I was looking at is called the EGI Relay. I will get all of this straight someday.



Thanks again,

Jerry

j9fd3s

imo they have it worded poorly

teknics

did you pull the line off before the filter to see if your filter is clogged? Also might want to check the sock filter on the pump itself.



Unless you know the problem is a lack of voltage to the pump itself, in which case you seem to be on the rite track.



Kevin.

red86rx7gxl

I do have to change the fuel filter, but I am not getting any voltage back to the fuel pump. I was checking the EGI relay where the book (Haynes Manual) said to leave the power going in (round connection) and that there should be continuity over pins 1 and 2, 3 and 4 (square connector)...but I am not getting any continuity over them. I have used a test light and an multi-meter on the testing. I didn't know about the circuit opening relay under the dash...I will have to look for that one too.



Thanks,

Jerry

teknics

the wonderful world of fc electrical gremlins oh how I don't miss it LOL



Good luck



Kevin.

j9fd3s

circuit works like this.... sorta, i dont think these are in the right order



battery -> main relay -> fuse (not sure which) -> afm -> cuiruit opening relay -> fuel pump



ecu switches the main relay when it sees rpm.

teknics

j9 raises a good point, it may be a faulty AFM there's a circuit that sends power to the pump in it.



Seen that happen a few times.



Kevin.