1990mustang gt dies while driving and won't turn back on

ii think it is the hard drive,first disconnect the battery clean the pins contacts and after reattach to the PC,attach the charging cable to it,please see if the charging led is on without turn on! After that it is two little scruws underneath the PC where the hard drive is! open the cover,detouch from the connector,clean it ,reattach it than try to start it!let me know ,thanks

crank sensor located off the fly wheel in transmisson

First you always test things & never replace anything

When you understand how things work & how to test
them,then they have to fail a test in order to need replacing

I would think Fuel Pump--if it quite while driving
Put a gauge on the motor if you have a shrader
valve to do so

Seldom do you need to replace a dist
The parts inside can be diagnosed & replaced
if you can source them

Things like plugs,wires & such you leave until you
know if you have fuel pressure,spark & so on.

Once a vehicle gets to 20 years of age you start
checking for wire corrosion such as around fusible links

Never forget the battery & it's cables & the internal
corrosion possible there

Worn ignition switch a possible

You say won't start,so I assume the engine
does turn over?

If it died and won't crank, sounds like you lost power to something.
Does the warning lights come on when you turn the key on ?
Got headlights ?
A mechanic would check for voltage at the starter and work back from there.

If the engine won't crank with compression in the cylinders, either the head gasket has blown or something else major has happened.
You will have to get it towed to a shop.
If it cranks normally but won't start, you have to figure out if it is a fuel or ignition problem.
Did the temp gauge show it was overheating before it died ?

Possibly a crankshaft position sensor had the same problem with one of my former vehicles. Be careful buying a new one though it is an electronic part and it is not returnable at most part stores. That is what it sounds like to me though.

Could be the cranking amps in the battery are under par. Needing new battery. Or the alternater is not working properly.

Did anybody bother to actually TEST the charging and starting system or are we just replacing parts? This whole thing COULD be caused by something as simple as a bad battery cable connection.

I would recommend reading the following articles:

My Car Won't Turn Over

What Else Could Be Wrong?

My first thought, is the fuel pump quit

That is where you start, or a repair shop should start

I do not like going anywhere near 70 mph for that reason,
& I'am getting too old to enjoy speed & spend too
much time making love to vehicles, to put them under
any load at high speeds or uphills

Check the air filter, replace it if it's dirty. Also if you haven't replaced the fuel filter it may be time.