Fss no power

[Guffey6]

Ok guys, I just installed a facet pump a few weeks ago. The thing has ran great until just a min ago when it died on me ( in my driveway, luckily). Anyways after doing some looking, I have no voltage to my FSS and that's where I'm pulling my power to pick the relay for the pump. Is this common? And where is the fuse/ fuseable link located? Thanks in advance..

 

[gandalf]

Don't know where things are on an '88. I'll assume that is the truck, the one in your sig block. What you can do, until you get this fixed, is run a permanent hot wire direct from the battery. You simply connect it when you want to go, and disconnect it when you're at your destination. However, remember that it is a permanent hot, and you must disconnect it to shut off the engine. This is not a forever fix.

 

[laserjock]

All the fusible links are on the starter relay hot post pass fender. I'd start there.

 

[laserjock]

Could be ignition switch if nothing else works key on but I'd bet on the fusible link wires. Probably disturbed them putting in the pump.

 

[Guffey6]

Every time I improve this truck something else down stream always breaks. I keep telling myself that one day this will be a new truck, considering all of the new parts on it.

I won't be able to look at it again til tomorrow afternoon, baby duty, but when I find something out I will let you guys know.

 

[Guffey6]

Could be ignition switch if nothing else works key on but I'd bet on the fusible link wires. Probably disturbed them putting in the pump.

Everything else works fine just the fss and the pump. I've read where the fast idle solenoid is wired in with the fss as well. I haven't checked that yet.

 

[madpogue]

Is the contact circuit of the fuel pump relay energized by the FSS circuit? Or just the coil circuit?

 

[Guffey6]

Is the contact circuit of the fuel pump relay energized by the FSS circuit? Or just the coil circuit?

Just the coil, the contact circuit is powered from the always hot side of the starter relay on the passenger side or the fender well.

 

[laserjock]

How did you tie into it? If everything else works, your splice might be suspect.

 

[Guffey6]

How did you tie into it? If everything else works, your splice might be suspect.

The fss to relay with a female connector just like the stock fss connector, just with 2 wires going in to it. From the relay to pump power it's an eyelet to the lug on the starter solenoid. And the grounds are eyelets, one going to block and one going to frame.

 

[laserjock]

Stupid question. Does the fuel pump run? GP controller working?

 

[Guffey6]

Stupid question. Does the fuel pump run? GP controller working?

Fuel pump does not run. And yes the GP controller is working.

 

[laserjock]

Those are both Key on functions. I'm trying to remember if there is a fuse in that line. I'd sure check the fuses. I'm not close to my manuals.

 

[Guffey6]

Yeah that's my plan, I just didn't have time to dig into it much this afternoon. Tomorrow I will be able to dig deeper.
I've been debating on whether to run a hidden toggle switch inside the cab to the pump, to bypass all the "key on" side of it. Plus it will pretty much make it anti-theft lol

 

[Dieselcrawler]

could also be the connector plug on the pass side valve cover for the engine harness.