Car started and ran fine, got to my gf's house. Went to leave and once again fuel pump wont prime. I get 12v at inertia switch (not tripped) eec power relay turns on and i get 12v at the yellow wire, tan green and the red black on the fuel pump relay! So i swapped the eec power relay with that one and it does the same thing, so i ruled out the relay itself. I also tried jumping the fuel pump using the diagnostic connector but got nothing.....wont prime, where to go from here? How do i check the fusible links under the hood, there are a lot of them and i dont know which ones do what....
silly fuel pump circuit wiring problem making me mad
- Thread starter 86gtriceeater
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liljoe07
5 Year Member
Just use a Volt Meter or test light, and test both side of the Fuse link. Should be one of the yellow ones.
I don't know the history of your vehicle so here is what I think based on the info you've given.
I would say that the eec isn't grounding the fuel pump relay. I forget which color the wire is (ground on control side of relay) but you should check and make sure it has zero resistance to ground when the key is primed. If it does NOT then I would bet money that the power to your eec is not there. Did you short anything out? Check the fusible links up front and I bet you'll find your culprit.
If it's blown then just cut it off and replace it with a low amp blade style fuse holder...
good luck
Drew
I would say that the eec isn't grounding the fuel pump relay. I forget which color the wire is (ground on control side of relay) but you should check and make sure it has zero resistance to ground when the key is primed. If it does NOT then I would bet money that the power to your eec is not there. Did you short anything out? Check the fusible links up front and I bet you'll find your culprit.
If it's blown then just cut it off and replace it with a low amp blade style fuse holder...
good luck
Drew
liljoe07
5 Year Member
The Pink/ black wire should have voltage when the relay engages. The Pink/Black wire feeds the pump
Go back and ground the Fuel pump manually at the Test Connector, then see if you have power at the Pink/Black wire
Go back and ground the Fuel pump manually at the Test Connector, then see if you have power at the Pink/Black wire
liljoe07
5 Year Member
Yellow at the fuel pump??????? Sure thats not the sending unit wire?
Anyways, sounds like the pump is shot, or maybe a bad connection in or on top of the tank
Anyways, sounds like the pump is shot, or maybe a bad connection in or on top of the tank
liljoe07
5 Year Member
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