2002 Jeep Grand Cherokee Limited. I keep her maintained. It has the 4.7. I have replaced all the O2 sensors with Mopar about two years ago, a new Mopar radiator, water pump, new front and rear main seals, new belt about 2 years ago, new fuel pump about three years ago. Was running fine, now it won’t keep running. I drove it home and pulled it into garage all fine. About two hours later I tried to start it to move it back. It was crap from there. I smell raw fuel. Idles really rough. I now have replaced the injectors, ignition coils and spark plugs. Still have the problem.

 

Well, welcome to the forum. Good job of describing the problem and what you've done so far.


Now, do yourself a favor and top firing the parts cannon. Let's do some figuring and testing....

Where are you smelling the raw fuel? Engine compartment? Or tailpipe?

 

Maybe check the oxygen sensor circuitry. The O2 heater element part, and all of the other wiring and connections. I would test for having the proper VOLTAGES and resistances in this circuit with a multimeter.

If there is a problem with any of these things, it could cause it to run roughly because of the sensor readings to the computer itself, or as causing interference to the crank position sensor is a possibility.

Have you thought about using a scanner to see what the computer sees with the oxygen sensors, and also maybe for seeing what the fuel trims are able to show you?