CHEVY STALLING, SURGING, HESITATING OUT OF N

1993 Chevrolet Silverado

Tiny

TIGERZ

May, 2, 2008 AT 6:56 PM

Engine Performance problem
1993 Chevy Silverado V8 Four Wheel Drive Automatic 93,000 miles

I was just driving casually with a clear sunny day then BAM all of a sudden this problem started

my truck surges at idle and stalls. Also it will slowly stall if I just hold the accelerate, at say, 2500 rpm.

BEFORE this issue started I have replaced the following last month as a tune up
EGR valve
PCV valve
K& n filter
royal purple oil
MSD coil
accel cap/rotor

AFTER this issue started I replaced:
MAP sensor
IAC sensor
new plugs
new fuel filter
new fuel pump

still the same issue. Im at a total loss right now. Any ideas?

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