bump for similar...
5.3 manual; getting random hesitations under any throttle input/gear/speed. various durations & intensities but frequent.
i've ran a tank of HEET + storage stabilizer (just had some left), then a tank of 93 with seafoam. i've replaced the fuel filter & pulled/cleaned the injectors.
no CEL or codes (other than a persistent P0446 whenever i'm below 1/2 tank).
00 FRC - just top end, exhaust, and a hot-air intake
99 Sierra - 5.3 / 5spd
↓ click the pic for the build ↓
even updated-er update: unplugged the knock sensors & drove around. does the same thing.
spark plugs & wires look good (plugs have 20k on them since new with cam spring last year).
is this pointing to coils?
00 FRC - just top end, exhaust, and a hot-air intake
99 Sierra - 5.3 / 5spd
↓ click the pic for the build ↓
could i zip-tie on the coils from my LS1 (square style vs the round LM7 ones) to see?
they have the same main harness connector
00 FRC - just top end, exhaust, and a hot-air intake
99 Sierra - 5.3 / 5spd
↓ click the pic for the build ↓
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