Fuel pump issue..need some assistance..sheys dyin.

Derek, how do you know what chipmunks talkin inside your trunk would sound like? Your crazy Canadians.

Do you have a FP gauge that you can see while it takes a dump on you?

A reminder from Tom that I hadnt thought of in awhile (paraphrased):
If you suspect the relay, I'd check the output terminal (N.O.) voltage versus the input (common) - look for a voltage drop across the two, which indicates a relay poopin itself.

Good luck D.

Interesting. Let's hope the relay does it. Since it reprimed, it almost sounds like the FP driver in the puter burped and let that happen (though I haven't let a stang sit with the key on, engine off [well, not intentionally]). In your dyno thread, it sounds like it could go either way. The pump wiring at the tank is sound and clean? I guess that's a rhetorical question.

If it's a fresh pump, I wonder if Walbro would do forensics on it or just warranty it out. Aside from the shipping issue, Dave at JD's is a great guy in my book (when I call for something, it ends up being a 30 minute chat) and he's got great pump prices.

Stand-by, dyno-thread loading. Stand-by, dyno thread loading. Nice work! That's quite a jumpito! Now you can brag that you're well into the 3 club.

Here's Jd's FP page. It was ~$65 USD shipped for a 155 LPH pump. EDIT: I think prices went up a couple bucks. I think the pump itself was 59 beans when I ordered it.

He really went above and beyond to make sure things were right-on when I got the pump - that means tons to me in this day and age of crap service. Very cool guy to do business with.

And yeah, it is always something. Wanna come over and help me fix crap?

I can supply an IV feed of gatorade and you can choose what channel we watch on the garage TV.

Me - I ain't smart.

Loose connections, in general, can cause heat. I suppose you could make sure the relay socket's female-terminals are nice and tight on the relay's male terminals. Are any wires also hotter than they should be?

Here's my thinkin: If anything in the circuit was overdrawing, the fusible link should blow before the relay or any wiring gets hot (whether the relay or pump or wiring cause the overdraw). Now as far as relays degrading internally, I won't pretend to know 1/2 as much as Tom, Joe, Saleen, et al - I'd leave it to one of them to comment about the contacts degrading, etc inside the relay.

In my experience, low voltage makes pumps get quieter. Now what does make them louder is cavitation. I cant think of a good reason why yours would though (you used a new intermediate hose that came with the new pump?). But that can make them loud and would obviously cause a stumble. And cavitation can cause the pump to start to fail (the diaphram uses fuel for lubrication and cooling - being deprived of that would shorten its life).

I know that really doesnt help. In a similar situation, I'd try your relay idea (I've been known to do a hotwire on a really failing pump, for diagnostic purposes - I sure wouldnt one your nice machine though). And the pump and its plumbling inside the tank is what is left.

That be the best I gots.
Good luck with it brah.