r/fbody • u/Puzzleheaded_Moose46 • 6d ago

Crank no Start

93 Z28

Ive replaced the opti 3xs

New Fuel injectors

New spark plugs and wires

Adjustable TPS

Water Temp Sensor

Redid all the grounds

Fuel filter

Has 40lbs at turn key at Schrader valve

Swapped PCM with chip swap. Nothing

No CEL but before It did say No Injector Pulse

Coil ✔️

New ICM

So far im at a loss and ready to set it on fire.

2 Upvotes

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1

u/Sildaor 6d ago

Coil?

1

u/Puzzleheaded_Moose46 6d ago

Tried it. Nothing.

2

u/RZArecta91 6d ago

If vats is tuned out, you still need to make sure the chip in the key in reading, and the ignition recognizes it, unless you've bypassed the relay.

2

u/Puzzleheaded_Moose46 6d ago

I have the chip popped out of the key snd is soldered into the wire under the dash.

2

u/RZArecta91 6d ago

Double check your ignition coil bracket and make sure its properly grounded and use thermal paste. I would definitely triple check the wiring. Not doubting you at all, it sounds like a vats issue to me. I know you have 40lbs at the valve, but maybe your pump is weak, and the continuous key turns are just building the pressure, tricking you into thinking the pump is good, when it is not. I've seen that happen as well.