my jeep liberty won't start please help.?

[Xypher]

my 2003 jeep liberty won't stat. it ran perfectly fine in the morn last week. wen i got of work my car wouldnt start. i get the radio and the windows can go up and down(power windows). my step dad said it was the starter. so i went out and got a starter... still it didn't start. so he said it may be the ignition switch. went out got that... still it ddidn'tstart. i need 2 get my car running asap. If u have ne thoughts Thanx!

 

[MreP]

Give a little more information on what it does when you turn the key please. Does it click at all, or turn the engine over? If it is just a click, check your battery terminals, if the cables aren't securely tightened you may not be getting enough amps across them to crank the motor. If the motor is cranking, you need to look at whether or not there is fuel getting to the engine, you could have a plugged fuel filter or the fuel pump could be worn out. Also, if it cranks you could have an electrical issue related to spark plugs or wires. Lastly, if it cranks and seems like it is cranking faster or like there isn't much resistance when you crank, it could be that your timing belt broke. Hope this helps, email details if you would like more advice or suggestions.