Top 20 2003 Jeep Grand Cherokee Questions & Answers

Question edited for clarity and typo. Question move to sub category. In the link https://www.google.com/search?q=2003+Jeep+Grand+Cherokee+4.0+vacuum+hose+diagram&rlz=1C1QJDB_enCA643CA644&sxsrf=ALiCzsZ01aJvRIbi-ItrVsybfwqLpB7vKg:1655133759887&tbm=isch&source=iu&ictx=1&vet=1&fir=eg_i7iEBTar1SM%252ClG5C3sW0d95l2M%252C_%253B-bjmL_jOjrBo6M%252C4lpnf8J4SyQNeM%252C_%253B64qm6wsgl9DQkM%252CS5zQY7FPk324zM%252C_%253BELxwE7lH2gEC6M%252COxCz7cMgSt8AAM%252C_%253BR15O7od4tRU63M%252CE8SUqj6tnjom-M%252C_%253BlyubqA7kzr7N2M%252CLM7e5oqPbFMV9M%252C_%253BKNdRqVnwcm5T4M%252C8Ef4coWN-p52JM%252C_&usg=AI4_-kQdqPng4uV8i4x4kn9wI7rvhwjuvg&sa=X&ved=2ahUKEwibisHe3ar4AhVRFc0KHQokARsQ9QF6BAgDEAE&biw=1920&bih=937&dpr=1 ..

From our Pro Technician. Anonymous Mar 08, 2022 Look for broken wires inside the flex boot , black rubber boot from the body of the vehicle to divers door. That year vehicle happens a lot after you open the door a million times. Find a good local auto-electrician.

Question edited for clarity and some sentences. Question moved to Jeep sub category. The way to fix that is to go to a local auto-electrician and they will just replace the contacts in the junction box by crimping a new one to the wire, and locking it back into the junction box. You might even be able to do it yourself by bending the contacts in the socket a little with a thin blade screwdriver.

Look into the turn signal switch itself. Have the wiring checked.

Unfortunately, the relay may be located inside the transmission. Try utube if you have not already. If you need further help, reach me via phone at https://www.6ya.com/expert/gary_9c859f4aa7e5ab10

code p 0122 causes are wiring short to ground , TP/APP sensor --ECM or also wiring open/ short to ground / short to positive TP/APP---ECm so check the wiring and connections code p 0107 is map and /or BARO sensor --low input===causes ---wiring short to ground ---MAP sensor ---BARO sensor--ECM

Have them check your fuel filter, may be time to change- please also google the jeep to see if this is common!? Good Luck Stevo!!

indicates a bad ground /loose ground or dirty battery terminals

When you say the jeep will not turn over, you mean that it will not crank? If that is so then you may have a bad starter or coolant may have filled a cylinder with water. Pull out the spark plugs and see if it will crank over, check to see if water comes out of the heads when cranking. If it still does not turn over, check the starter.

Read this post about a lot of electrical problems. It will give you an idea on what to look for. https://www.cnet.com/forums/discussions/the-famous-jeep-grand-cherokee-electrical-problem-272172/5/ When it does not crank, check to see if voltage is getting to the starter. If it is, hit the starter. If it starts , replace it.

Power steering Belt or pump pulley. Could be that turning left puts more stress on your system then turning right and that's why you only hear it while turning left.

problem ground for the dash units

Yes they are.

remove door panel and check to see if glass is attached to bar that raises the window up and down as they do come loose I would use a good glue check with the window repair for some so you get the right stuff

run the fault codes servo/ solenoid. or sensor problems

Try a fuel pump relay. It could be getting hot and loosing connection then resets when restarting.

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 !

P1499 Jeep Hydraulic Cooling Fan Solenoid Circuit Condition

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

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