Jeep Girl first congrats on your Jeep ad your willingness to learn. First off I guess You have no Cel light on? From your post it sounds like a fuel related issue. A good place to start is buy testing your fuel pressure with a gauge there are no short cuts to testing fuel pressure. You should be able to find an auto parts store to borrow one from with a refundable deposit. You will then attach the gauge to what is called a scharader valve which is a valve located toward the front of the fuel rail and should have a plastic cap over it. Crank the engine over until the gauge reaches it's highest point the spec is 49 psi +or-5 psi.
One thing that just came to mind is to first check your Fuel pump relay located In the Power distribution box [PDC] located on the passenger side fender well there is a label underneath the cover and all of the relays are the same so you can use one of the others just do not use the ASD relay. Keep us up to date on what your findings are. There are several other things that can cause a no start fuel problem but swapping the relay and FP test are simple and cost nothing but a little time. One other thing I Just caught is you have a Grand Cherokee so you might try posting in that section .But my suggestions apply to your Grand as long as it is a 4.0 engine
Last edited by buildin1XJ; 04-17-2013 at 01:18 PM..
Reason: More info