4 possibilities in order of what to try first, second, etc:
1 - Make sure air is flowing over radiator (Fan is turning, front of radiator/ac condensor clear). Make sure you have enough coolant in radiator and overflow tank. Free.
2 - Thermostat not opening. Get new one. $6 at AutoZone. About an hour job. Get new coolant at same time. Need about a gallon of full strength and mix it 50/50.
3 - Radiator clogged. Get new one off Ebay. $130. About 2 hour job. same thing with coolant as number 2
4 - Water pump not turning fast enough or engine coolant passageways not clear. This is not the option you want to experience. If you are asking this question then go to a mechanic for this one.
It is probably number 2 - Thermostat. That's what mine was. You will want to make sure you get a gasket with it as well as silicone thermostat gasket sealer. Another 3 or 4 dollars. Not a difficult job at all.
Good luck
Flush radiator
timing marks for 1996 Isuzu trooper
Remove Camshaft fro isuzu trooper 1996
Its in the alternator
It is located on the flywheel.
On top in front of engine
my niece's was overheating I replaced the radiator cap and it hasn't happened since FYI
Isuzu Trooper was created in 1981.
under the hood in the fuse box
1999 Isuzu trooper
6 quarts with filter change
According to rockauto: HONDA PASSPORT EX (1994 - 2002) HONDA PASSPORT LX (1994 - 2002) ISUZU AMIGO (1998 - 2000) ISUZU AXIOM (2002 - 2004) ISUZU RODEO (1993 - 2004) ISUZU RODEO SPORT (2001 - 2003) ISUZU TROOPER (1998 - 2002) ISUZU TROOPER LS (1992 - 1997) ISUZU TROOPER LTD 1997 ISUZU TROOPER RS (1993 - 1995) ISUZU TROOPER S (1992 - 1997) ISUZU TROOPER SE 1996 ISUZU VEHICROSS (1999 - 2001) TOYOTA T100 (1993 - 1998) TOYOTA T100 DLX 1995 TOYOTA T100 DLX EXC 1995 TOYOTA T100 ONE-TON 1993 TOYOTA T100 ONE-TON DLX 1995 TOYOTA T100 SR5 (1993 - 1997)