Baffling electrical issue please help

[SenorNoob]

IIRC all of the fusible links are on the passenger side inner fender.

 

[Uncle Gump]

Not positive... but I'd bet it's close to the EEC relay

 

[thatbotguy]

Big update

I found this thread diagnosing a very similar issue and it led to me bench testing the eec relay and it is bad. I also tested the red wire between the eec relay and the pump relay and it seems like our fusible link is good.

Now to find a parts store that is open, will update in a bit.

Edit because I hit post by accident lmao

 

[Uncle Gump]

You said in previous posts... the other relays tested as expected...

Doesn't matter... we would have been there in the next step.

Hopefully it fixes your problem.

 

[Uncle Gump]

And your link don't work... at least for me.

But we likely captured enough to help the next member with a problem.

 

[rusty ol ranger]

If the relay doesnt fix it its very likely the ECM. That can absolutly kill pump and injector function...as well as do all sorts of other odd shit.

 

[Angry Possum]

If the relay doesnt fix it its very likely the ECM. That can absolutly kill pump and injector function...as well as do all sorts of other odd shit.

Yeah good call.

 

[thatbotguy]

You said in previous posts... the other relays tested as expected...

Doesn't matter... we would have been there in the next step.

Hopefully it fixes your problem.

I sure did, that's my bad

It fixed it!
I'm not sure if the relay went bad and burned up the pump or vice versa, but I'm gonna sanity check the old pump to make sure thats actually bad tomorrow lol

But either way we got a runner, thanks yall

Also I found a Haynes manual for the truck when I was at AutoZone which is very cool and would have been super helpful like 5 hours ago

 

[Uncle Gump]

I sure did, that's my bad

It fixed it!
I'm not sure if the relay went bad and burned up the pump or vice versa, but I'm gonna sanity check the old pump to make sure thats actually bad tomorrow lol

But either way we got a runner, thanks yall

Also I found a Haynes manual for the truck when I was at AutoZone which is very cool and would have been super helpful like 5 hours ago

Good deal...

There really is no direct link between the two components... hard to believe one took out the other.

Strange to have two failures at one but it could happen.