It is possible that the bendix or solenoid on your starter is bad. These allow the starter teeth to move forward to engage the flywheel. Take the starter to a auto parts store and have them check it.
The sister vehicle of the Isuzu Trooper is the Acura SLX
low or no oil pressure
The starter on a 94 Isuzu Trooper is located on the bottom, passenger side of the vehicle. It is found at the rear of the engine, at the flywheel.
Isuzu Trooper was created in 1981.
The thermostat on a 2000 Isuzu Trooper is located on top of the engine, below the upper radiator hose. It controls the flow of coolant to the radiator and throughout the vehicle.
1999 Isuzu trooper
timing marks for 1996 Isuzu trooper
The 6VE1 3.5L V6 fitted to the Isuzu Trooper was manufactured in-house by Isuzu themselves
The trooper is made by Isuzu
Remove Camshaft fro isuzu trooper 1996
will a 3.2L 2000 Isuzu Trooper engine fit a 3.2L Isuzu rodeo transmission
If your Isuzu Trooper anti-theft light is not going out and your vehicle won't start, put the key in the driver's side door and lock it. Unlock it and check to see if the alarm is disabled.