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And the winner is (drum roll please), Crank Shaft Position Sensor. Again, the symptoms: 1. Will not start. 2. Can not hear the fuel pump when you try to start. 3. Can not read the computer with the OBD-II code reader. Will not connect or communicate. 4. (Not sure about spark or fuel - my...

Ouch! From what I can tell, I can not get to this part unless I pull the motor or drop the transmission. Dang!

Can not read the PCM. So I want to install this Crank Shaft Possition sensor... Where is it? I hope it's not between the motor and the fire wall. If so, how in the heck do I replace it???

Well, as explained, my code reader will not read the computer. I guess a DTC is a code from the OBD-II reader???

Should I get one from the dealer ($110) or NAPA ($54)?

Where is that? What does it look like?

It's a 4.0. What is a CKP?

Long story or short. Well, I'm at work so here is the short... I have a 2004 Grand Cherokee Laredo with 93,880 miles on it that will not start. I parked it at the office, went to leave 4 hours later and it will not start. It cranks well, but won't turn over. I can NOT hear the fuel pump so...

I tried to fix the regulator. Here are the instructions: Door Instructions - For 2000 through 2004 Jeep Grand Cherokee

Sounds like a mount to me. Also make sure your ebrake is not trying to stick.

Welcome Back! Let us know how the mods go.

Did that fix it the problem?

I have a basic Grand Cherokee Larendo and we have had only 2 problems out of it. 1. Battery cable connectors got dirty and it was hard to start until we got them cleaned. 2. The window regulator cable came loose in the passenger door. Other than that, absolutely no problems at all at...

So it works now?

I had a simular problem. My battery cables had corrossion on the connectors but it did not look like it did.

I have a 2004 Jeep Grand Cherokee Larendo. :shock: Yesterday we pulled into a parking lot, closed the passenger door and watched the window go down all by itself. Drove home with the window down in 100 degree heat and decided to fix it the next day. The problem was that the upper window...