20 Most Recent 2003 Jeep Grand Cherokee Questions & Answers

You don't need to go by auto zone to have codes check ! Chrysler , Dodge and jeep vehicle's can be checked without a scanner ! Turn the key on then off then back on then off again an then on an leave it on . Check in the odometer an it will show P codes ,then it will show done !
What size engine does it have ? 4.0 or 4.7 L
Fuse #17 10 amp located in the junction block powers pin #16 at the DLC . This would power up a scan tool . Not a PCM fuse !
Your vehicle does not have a separate control module for the transmission ,it is part of the PCM - powertrain control module !
Jeep vehicles with stalling an idle going high then low ( surging ) is caused most of the time by a bad TPS - throttle position sensor ! An don't use one from the aftermarket , use factory parts !

2003 Jeep Grand... | Answered on Jun 02, 2017

If you think that faulty brakes are OK then fine, keep driving it without looking to find the issue.
If you have ABS, suspect the ABS controller under the brake pump.

2003 Jeep Grand... | Answered on May 28, 2017

code p 0340 refers to cam shaft position sensor(CMP) sensor A bank 1--circuit malfunction====causes --wiring-- CMP sensor-- ECM
code p 0700 refers to transmission control system/ MIL--malfunction===causes --wiring---TCM
parts are available on line from e-bay , wreckers , junk yards manufacturer spares departments and would be delivered within 30 days so why are you waiting 7 months to get parts

2003 Jeep Grand... | Answered on May 07, 2017

go to your desired station ex 99.9 and hold down 1 on the preset line til it beeps.

2003 Jeep Grand... | Answered on Mar 24, 2017

The body control module is the cause of your weird problems. Replace it.

2003 Jeep Grand... | Answered on Mar 21, 2017

good one, love these kinds of failures.
are you in the salt belt (wiki that)
dont buy no name lamps, (from china)
they make a bad product, cheap and poor.
also check alternator voltage 15vdc max, if more lamps can burn out.
only 3 causes, voltage, junk from china, or wild crazy vibration.
id say its not that last one, no?
we shot huge guns in the Navy and blew lamps and fuses like mad.
So, know a thing or 2.

your lamps seem to be modified
some one put in the wrong lamps. easy to do sure.
wj jeeps.
brakes, not park not reverse not blinks only brakes right
not tails , tails means PARK.

most glove box operators guides tell you what to use.
ever read it?

or here, SM
chapter 8L
lamp 3157

go here click WJ
then click lamps
read page 5

2003 Jeep Grand... | Answered on Mar 12, 2017

2003 jeep GC, or WJ jeep, it is..?
there are no 50a fuses in any JB,
there are just 4 in the PDC. engine bay.
so, JB is wrong, input to me.
ill assume F15 is correct, and not F3/7/12 in PDC
F15 feeds JB via a pink wire. (pk-wt)
this main F15 feed JB , F5,7,8,9 fuse in cab.

so pull fuse 5 to 9 there and the one that ends the drain
is the load that is leaking, (phantom drains)
easy, huh, just 4 fuse to pull.
Cab box, only. called JB on all jeeps.
jb fuse 5 is radio.
jb fuse 7 is HVAC zone control (heat?) skim mod. & auto head lamp sensor & BCM memory, (yes lots)
jb fuse 8 is (12 courtesy lamps , intrusion module(export) and VICS, vehicle info center(memory)
jb fuse 9, front12vdc power outlets (cig ports modern) Cell Phone arked there?

or login at alldata.com and see all that, in the wiring pages.

2003 Jeep Grand... | Answered on Feb 06, 2017

Check the black fuse box under the hood near the battery ! Check it out on you tube !

2003 Jeep Grand... | Answered on Nov 20, 2016

Your probably running hot or you need antifreeze !

2003 Jeep Grand... | Answered on Nov 20, 2016

some engine bay huh ..thats a jeep for you

held on by two long bolts

would think if you cant get it out from the bottom

lots of parts will need parts/plastics
will need to be undone to get the space to take it out
through the top




2003 Jeep Grand... | Answered on Sep 04, 2016

Dear sir

I think there is something too much tight the cap of coolant box that's why inside the box pressure build.
Kindly use open air type cap to remove moisture inside

Hope answer the question

2003 Jeep Grand... | Answered on Jul 20, 2016

this is a USA forum, and your car is not HERE! a fact !
we dont have 2003 Cherokees here.
Grands yes, not , non grands.
so your car is our.(kinda near) our Liberty
is it gas or diesel.? even saying engine size wins 10 points.
GAS (petrol) answers (wild guessing on my part)
all ways to lose power, in unstated engine,

bogging or misfiring
ever try fresh spark plugs on this puppy.

2003 Jeep Grand... | Answered on Jun 14, 2016

possibly a broken or cracked vacuum hose that is altering the mixture when stopping
could be a brake booster failure

2003 Jeep Grand... | Answered on May 28, 2016

It could be the crankshaft position sensor, but instead of replacing parts on guesswork have vehicle scanned with diagnostic code reader, it will be cheaper in the long run,
let me know how it goes

2003 Jeep Grand... | Answered on May 19, 2016

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