You have to replace a relay switch for the wipers this sholud be found under the hood in the engine compartment fuse box.
1999 Isuzu trooper
Replace the windshield wipers.
The sister vehicle of the Isuzu Trooper is the Acura SLX
A 1999 to 2001 Acura SUV and a 1999 Isuzu Trooper are different vehicles with distinct dimensions and designs, meaning they are not directly interchangeable. The Acura SUVs from that era, such as the Acura MDX or RDX, have different body styles and specifications compared to the Isuzu Trooper. Therefore, parts or components from an Acura SUV are unlikely to fit a 1999 Isuzu Trooper without significant modifications.
In the fuel tank
blown fuse?
how to set the timing on 3.5 liter engine on a trooper 98
ATF-III
Its under the intake
It is under the cowl thing. You must remove the wipers. MAKE SURE YOU MARK THE LOCATION OF THE WIPERS ON THE WINDSHIELD.
IIRC its in the underhood fuse box
Automatic is a gm 4l-30e unit.