Car cranks over but wont start. after sitting for about a half hour car starts, turn off wont start. here fuel pump noise. what could be wrong? car is a 95 licoln town car

When you put your key in, don't turn it all the way but to the point where everything powers up. You should hear a hum from the lower rear that lasts about 3 seconds. That's the fuel pump. If you don't hear that, it could be the fuel pump.

the crank sensor is done will need to replace it
it has happen to me too 3 times

Sounds like a faulty fuel pressure regulator, or possibly the MAF sensor.

I've had the same problem with my truck. It's not unusual for one to have to re-prime the fuel pump. just turn the key on, let it sit for a second, and when you no longer hear the fuel pump priming fuel (sounds like a whining noise before you start the engine), crank it up.

1. • 1 Ensure that your battery cables are properly connected to the battery.
     
   • 2 Start your car.
     
   • 3 Let the car run for around half an hour. Most cars idle fast enough that the alternator will be able to charge a battery while sitting at idle.
     
   • 4 Turn off your engine and test your electrical systems. If they work properly, your battery has been charged. If they do not work, or are sporadic, turn your car back on and drive around for another half hour. After the drive, your car's battery should be sufficiently charged.
     

try fuel filter first

if the car just wine's when starting like it would normally and nothng is happening...Check for fuel, either find the fuel pressure relief valve near the rear of the engine, and depress the valve stem (fuel should hit the roof of hood) if not then its a fuel problem, try this a couple times, but turning the key over, and listen for noise from the gas t ank to see if the pump is actuating.. if you hear the noise while just turn the keyy to acc, not start plz comment back that you hear it , but its still doesnt start....
hope this fix's-ya!

just went thru the same think wit a s 430 it was the crank position sensor . 60 bucks at auto zone and it took me 5min. 2 install if u need help feel free to call me 918 808 9706 chris

You can try this, turn on ignition, you should hear a whirrling noise from the fuel pump, if you hear it, turn ignition off, wait a few seconds, turn it back on, do this 3 to 4 times, so the fuel pump can build up some pressure, then hold the pedal down about half way while your cranking the engine. If there isn't anything else wrong, it should start.

Hi. you should replace air filter and ad a gooooood fuel ingection cleaner ,this should help.Good Luck