Vortec350ss

iTrader: (20)

I'm ready to burn the truck. Burn it right to the ground.

Happens at exactly 1400 rpm. Doesn't care what gear or load is on the engine. While it's missing it goes lean as hell. When I say any gear I mean 1-4, neutral, and drive while brake stalling. Also happens on decal when RPM doesn't fall past 1400 too fast. With a fairly quick stab of the throttle it will just blast right past 1400 RPM. On moderate accel it is a fairly quick blip as RPM quickly sails through that zone.

Any ideas ladies?

Wolftrk99

iTrader: (5)

I know its a stretch, but vacuum leak is first thing that comes to mind, or a fpr issue...

1FastBrick

iTrader: (17)

Stop touching yourself while driving... LOL

Seriously, perform a crank relearn.

03sierraslt

iTrader: (22)

I hope he did this after installing new motor, if not it needs done. The relearn part.

Should be done after installing a new crank or cam sensor and or motor.

Vortec350ss

iTrader: (20)

Yea.........

cant remember doing it sooooo I don't think I did it. Hopefully this solves the issue.

As far as not touching myself while driving:

I do what I want!!!

1FastBrick

iTrader: (17)

Ha Ha!!!

Vortec350ss

iTrader: (20)

Forgot to close the loop in this thread.

Turns out it was a resonance in my new fuel system from injector pulses. Weird as **** and I chased my tail for a while looking for it.

BlackGMC

iTrader: (31)

You love men. Just say it.

MikeGyver

iTrader: (5)

What does that even mean?

Vortec350ss

iTrader: (20)

Exactly. Dude it was absurd.

Meaning the pulse from the injectors was such that it literally caused the motor to break up as though it had a 2 step. I had to change the length of my fuel line to figure it out.

Like I said, most bizarre misfire ever. It was absurd. I was ready to kill someone.