Decal on Support says "DO NOT TOUCH..."

[Suburbanite88]

Okay gentlemen (and ladies, as you may be)... I think this whole thing is SOLVED!!!

Let's just try to step back a minute, you know... Away from the trees! Let's start over again... Here's my problem:

1988 V20 Suburban 350/400 TBI (40k on rebuilt THM400) Runs, drives like a champ! Strong running powerful, great condition... Suddenly, without warning, almost overnight:

Pulled into a gas station one day last month, into the lot, started sputtering, choking, stuttering...

Out of gas...

No way, nearly a quarter-tank left! Can't be empty!
Still I roll up to the pump dead...

MUST HAVE BEEN THAT SMOG GUY FROM YESTERDAY,
THE ONE WHO "ADJUSTED MY MINIMUM AIR RATE ADJUSTER!"

Yeah. Maybe so...



Symptoms:

Slipped into Reverse, dies.
Slipped into Gear, dies.
Hit the brakes, dies.
At a STOP sign, dies.
Now it's Hard Starting.
Low Engine Idle Speed.
Rough Idle, in Park, in Neutral.
Won't Idle in gear, ever.
Will not Rev.
Will NOT accelerate.
Stalls at speed.
Bogs.
Hesitates.
Coughs.
Sputters.
No power...

What is it?



What is the Problem?

SMOG Check guy, messing with the Minimum Air Rate Adjuster? I guess I'll never really know, now...
Because, coincidentally, my FUEL PUMP/SENDING UNIT is in the throes of it's own Death Rattle!

No winding up sound when I turn the key to start...
(Relative) Silence.

No high-pitched whining sound, either...
Probably not much to hear completely submerged in a...

FULL-TANK of GAS!

CODE 44

Thank you all so very much! I've learned a lot!