Engine will not crank over?

Havent gotten an answer. Just did it again the other day.I think its the ignition switch though. If it fails to crank and I jostle the key around it starts up. Must have tumblers or a contact swith going bad. Let me know if you find out anything.

Does it not turn over just when it is hot?If so, It could be the starter. To find out if that is the problem, you will need two people to check and a 12 volt meter. With one person in the car and one under, set up the meter to the + on the starter and ground the other side. At that point, have the person in the car turn on the key as in starting the car. If you read 12 volts and the starter is not trurning out, your starter is bad. If no voltage, it could be the starter relay or in my case the clutch safety relay switch.

I have a 2001 one mustang 6 cyl, as I was driving my car it started to chug and died on me as I was driving the gauges stayed stucked on the postions the were on, I then pulled over to the side of the road turned off the car and tried to turn it on again but nothing happen it turned over but the car wasn't turning on. I put the key in and turn it without turning it on the service engin soon light is on as well as the battery light is on.

It turns out my fuel pump isnt working

Engine problem
2001 Ford Mustang V8 Wheel Drive Type unknown Manual 50000 miles

My car turns over then shuts off. You have to keep your foot on the gas to keep it running. I am having trouble locating the idle to turn it up. Can you help me?

Hello, please help/advise.

2004 Ford Mustang convertible / V6 / 3.6L / automatic / 140,000 miles / new battery / only year old spark plugs / distributor coil.
Car is garage-parked... Not a daily driver... But crank & run it every weekend.
We just had unusually cold Houston weather (12 degrees)... And I did notice the negative/ground cable on the battery was "loose"/not tight... Could pull it off of the negative terminal by hand.

Symptoms: Turn the ignition and the car attempts to crank... Turning over strongly (not battery)... But will not fire up/run... Headlights come on / radio plays.

OK... So took off both battery cables / cleaned them / replaced & tightened them snugly... Same results... Turns over strongly but will not fire up/run.

Noticed that the "THEFT" light on dashboard is blinking weirdly/erratically... And hearing something sounding like? 4x times mechanical repetitive sound (like behind the radio?) When sitting in car attempting to crank immediately after turning engine over?

Put jumper cables on... Same results... Turns over (even stronger now)... But will not fire up/run.

1. Fuel Supply (frozen gas line? Fuel pump? Fuel filter?
2. Fire (Spark Plugs? Spark Plug Cables? Distributor Coil? My guess & will start here.
3. Engine Compression?