Many reasons, but a common one is a faulty neutral safety switch, try starting it in neutral.
The 2003 Jeep Wrangler has 16 valves.
The 2003 Jeep Wrangler is a gas-powered vehicle.
The 2003 Jeep Wrangler has a 5-speed manual.
The 2003 Jeep Wrangler has an inline 4 engine.
The tps is not adjustable on a 2003 Jeep Wrangler.
The 2003 Jeep Wrangler has double overhead cam (DOHC).
The 2003 Jeep Wrangler has a drag coefficient of .58 Cd.
The 2003 Jeep Wrangler has a 42 degrees angle of approach.
The 2003 Jeep Wrangler's turning circle is 32.8 ft..
The 2003 Jeep Wrangler has a 31.9 degrees angle of departure.
The maximum payload of the 2003 Jeep Wrangler is 800 lbs..
The 2003 Jeep Wrangler runs on regular unleaded.