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Disconnect the negative battery cable, then the positive battery
Wait at least 90 seconds after the negative battery cable is
disconnected to prevent possible deployment of the air bag.
Drain the engine coolant.
Remove the air cleaner assembly.
Fig. Exploded view of the air cleaner assembly
Remove the battery and battery tray.
Matchmark the installed positions of the hose and hose clamp, then
disconnect the lower radiator hose from the water inlet fitting.
Detach the control hose electrical connection.
Remove the control wiring harness connection bracket.
Unfasten the retainer(s), then remove the water inlet fitting.
Remove the thermostat.
Fig. Exploded view of the thermostat mounting
Installation is the reverse of the removal procedure, noting the
Install the thermostat so the jiggle valve is facing straight up.
Be careful not to fold or otherwise damage the rubber ring.
Fig. The thermostat-s jiggle valve must be facing up, at the 12
o-clock position during installation Refer to the fastener tightening specifications shown on the
accompanying illustration.During installation of the lower radiator hose connection, insert
the hose as far as the projection of the water inlet fitting. Align the
matchmarks on the hose and hose clamp, then connect the hose.
Fig. Insert each hose as far as the projection of the water inlet
fitting. Make sure to align the matchmarks before connecting the hoses Fill the engine with the proper type and amount of engine coolant.
Connect the positive, then the negative battery cables, then start
the engine and check for leaks.
While I understand this answer may be overkill, follow this link to an article about the engine cooling system. Look midway down the article for this sentence "More information about 2003 Mitsubishi Outlander Engine Cooling System service and troubleshooting, find here – 32 pages of PDF filetype" Click on the "find here" link which will prompt you to download a file 14_rar. Open it with any decompressing software (Winzip, WinRar) to find 14.pdf. Go to page 14-23 to see a diagram of where water pump is. It will also give you instructions on removing and replacing it. Good luck!
if you open the hood look towards the base of the windshield, you should see the linkages for the wiper arms. make sure the linkages are all in-tact and nothing fell off. if the linkages are all good, see if you can move the passenger side wiper with your hand, if it moves freely or with little resistance check the nut/bolt that hols it on at the end of the wiper arm. see if the nut/bolt is loose. tighten if needed. also you can remove the nut/bolt and check the splines on the wiper arm where it presses onto the stud and see if they are wiped out.