Salling At highway speeds

Again, check THE WIRES going to the crank sensor, they run under the engine and cook themselves together.

Check your coil pack remove it and inspect the back of it,any sign of cracking replace it they tend to arc out inside the pack

Fuel injection relay. It is located under the hood inside the fuse box. It is either red or green in color. It is one of the larger relays. This is classic symptom of these things going bad. The heat causes the relay to swell and not engage properly. They die out every couple of years. Usually the car will start again after it cools down.

sounds like you have a bad fuel pump.Or possibly a clogged fuel filter.

try cleaning or replacing the EGR valve? hope this helps

my 94 chevy truck stalls even at highway speed ,it starts again but stalls after a few secs, finally it will run for awhile before it stalls again

sounds like you have trash in your carbs u need to take bottoms off and run a piece of a wire wheel through the jets

bad torque convertor solenoid , unplug the electric connector on transmission u can drive your car fine and save yourself a $1000 repair

Does it run good when it is runnig as good as it used to? Is the check engine light on or does it come on before it stalls? If it weret for the days of computers just sounds like overheating as from clogged exhaust

Check to see if the serpentine belt is still on the car.