Wont start. tried jumping still no start had the battier checked and it checks good.

Fix your car right away by clicking the link I attached Best Manuals

you either have fuel or ignition problem i would need more info.the crankshaft sensor feeds signal for both ignition and injection so if you have either it's not the sensor.you can check for spark but with injection you will need a test meter and check for voltage while it's cranking.

Have you checked your alternator?

If it cranks but won't start, you'll have to figureout if it is a fuel or ignition problem.Have you checked the computer for trouble codes ?

need to check your starter before going to check the sensor.

One of the simple things is the Inertia switch. Usually it is located in the trunk and it cuts off the power to your fuel pump. You press the button on top for about 3 seconds and then try to start your car. It can trip accidently if the trunk or doors are slammed enough to vibrate the switch.

If this does not help you want to see if you have spark. Pull a wire from a plug and lay it near a ground and see or hear if the spark is jumping.
If you have spark and you have fuel notice if the check engine light is on when the engine is cranking.

If you can get a gauge from Autozone or Oreilys with a loan deposit, you can take the gauge home and plug it onto your car. Then get the readings and ask Autozone what you need. Or if you do get it running, take it to those places and get a free scan.

CHECK THE BATTIER FOR POWER AND TRY AND CLEAN THE - AND + TERMENALS WITH HOT WATER AND THEN PRESS YOUR HORN AND HEAR IF IT'S WORKING U GOT POWER & TEST AND SEE IF U GETING 12 VOLTS' IF NOT LOOKS LIKE YOUR BATTIER NEEDS TO BE REPLACE!

new battier and check fuses

Hi
Try to jump start the car.
Put the jump leads on and leave it for 10 mins
that will charge the battery up
then try and start.
Also check the starter motor.

You should have you altenator checked most local parts stores will do it for free