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2003 Jeep Grand Cherokee Questions

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Im looking into buying a 2000-2005 jeep grand cherokee with the 4.7L V8 (I like those years body styles). I have two 12' pioneer champion series 1400W subwoofers and I'm planning on getting two more alpine type r12's as well. (That's around 9,000 watts) Obviously I need another battery for that, but for this build I want to lift it and get metal bumper with winch and 4 lightbars with 4 LED pods.(12,000 pound winch) (54' lightbar over windshield and 3 20" lightbars. Two on roof facing to the sides, and one 20' lightbar facing trunk/rear. Then have pods in front bumper. I was hoping I could leave stock battery alone and add one for my soundsystem and another for my LED's and winch. I would need another alternator. Would one 140+ amp alternator be ok to hook up for LED's, soundsyystem, and winch? This is my overkill dream build, I'm just wondering on your thoughts, comments, and if this it even possible....Thank you!
Every time I try to use the heater
Need to know which Dana model is in it so I can order the proper clutch pack for the rear diff.
my defroster will not blow cold when using air for inside car
front hood is stuck will not open
My jeep just stop working, I check a few things and find out there was no gas pressure, replaced the fuel pump, filter, and relay but still won't start I also put a new crack sensor and nothing happens I don't get power to the pump.
I bypass the relay and put direct current to the pump but the engine won't start.
Can somebody please help me.
My reverse lights never come on when im backing up, what fuse is used for the reverse lights? And if thats not it what could it be?
getting ODB codes p0455 & p0442
had an o with the ceiling know it is bad
Would like to know the labor rate to pull a long block engine and swap it with a short block crate motor in the 29621 zip code. Engine is the 4 liter inline 6 cylinder
The check gauges light is on and the engine does not start
Transmission changes good no noise fluid level is good
When the temp drops below 46f the jeep struggles to start, it cranks ok but it takes a few attempts at glowing the plugs. If it gets colder 37f and below it just won't start at all unless I use easy start. Have had all the usual checks done, battery, fuel, plugs, injectors, starter & sensors. Does anyone have any idea?
my car start but it looks not working perfect i check the code it was P1391
just started
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