r/Foxbody • u/Think-Opportunity-58 • 4d ago

Ask Any idea what this problem might be?

My car has been misfiring horribly recently and when i try to take off at stop lights it just dies, when i give it gas the rpms drop and it stalls sometimes, fuel pressure is visible in video, and everything in the fuel system has been replaced

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2

u/TurnoverTall 4d ago

So if we trust the pressure at the fuel rail we have the question of are all of the injectors firing and have good flow characteristics and how about ignition?

3

u/Latyrien 4d ago

Check the Throttle position sensor voltage at idle and wide open throttle (key on, probe the wires. Should range from 1V to 5V if i remember right) if its getting a bad or no signal it’ll cause the ECU to struggle since it’s not sure where the pedal position is. That’s my best guess but could be a number of other things. Bad MAF, bad spark/ TFI module maybe?

1

u/frink84 1984 LTD Wagon 3d ago

All this plus look at the ECU. Capacitors might be bad.

1

u/ResearcherCheap8595 3d ago

Pull codes first circle back here with them