Won't star when cranking engine.

check that the turbo is actually working at the lower rpms.check to see if it is a variable vane turbo where the vanes for the turbine wheel can be altered to produce boost at lower rpms. The vanes are controlled by a actuator on the turbo and is controlled by a vacuum hose controlled by the ECM. The misfiring may be actually over fuelling ( mixture too rich as the boost is too low for the mixture)

start of the fuel pump going or the fuel filter might be clogged or there may be air in fuel lines

Check for fuel at engine and for spark at coil

COULD BE WATER IN FUEL.DRAIN WATER FROM FUEL FILTER BY THE DRAIN PLUG UNDER FUEL FILTER REPLACE FUEL FILTER.IF ENGINE STILL STALL OUT PROBLEM COULD BE THE FUEL INJECTION PUMP.THAT WOULD BE A DEALERSHIP FIX.

my tach and speedo work without moving plus it adds mileage to my odometer without moving at all why
1988 ford thunderbird turbo coupe

change the fuel filter with a new one
let it come to operating temperature before you gun down the pedal to the medal
get a fuel cleaner injector cleaner.
turbo works good at operating temperature.
how is oil presure ?
Vitally

It is your fuel pump it has to put out at least 30psi at the fuel rail. Regardless of how much gas you think its getting its not enough. Replace the fuel pump.

Check your inertia switch in the trunk and press to reset it. See if you hear the pump run when you turn the key. Then try to start it. If it has been awhile since fuel filter time, you could do a fuel sample and replace the filter. You must have some type of spark to ignite the starting fluid, but your TPS switch regulates fuel pressure and spark advance. A code reader would be a nice thing to use right now. You may want to look at the timing belt for shredding. I hope this helps you.

have you cleaned the air filter?

My tbird has a 3.8 v6 engine and is not turbo charged and is fuel injected. Still haven't found the problem for its getting to much fuel.