Your 2001 Isuzu Trooper may stall when hot due to several potential issues, such as a failing fuel pump, a clogged fuel filter, or a malfunctioning ignition system. Heat can exacerbate these problems, causing components to expand and fail under load. Additionally, issues with the engine's sensors, like the coolant temperature sensor or the idle air control valve, can also lead to stalling when the engine reaches operating temperature. It's advisable to have a diagnostic check performed to pinpoint the exact cause.
I would start by checking the thermostat, it may not be opening.
Cleaning will not help. The piston is going cocked in the bore. Rebuild or replace.
Don't bother. Just spend $50 or so on a replacement and be happy.
Even a good EGR valve may cause an engine to stall in hot weather.
i have no idea what type of motor that the troope even has but your exhuast manifold is gonna be under the hood and the very starting point of your exhaust(the part that touches the motor and gets real hot real quick)
as soon as the ac is turn on the cooling fan should come on if not there is a problem with that take it to a ac shop thay can find it fast ..
If only when cold - normal condessation burning off If when hot could be a sign of a leaking head gasket Check to see if oil is mixing w/coolant or coolant mixing with oil
Replace your thermostat.
it can be either your maf sensor or your fuel pump
The heater will stop getting hot when you're low on coolant. If the coolant is low enough the engine will overheat and it will be severely damaged.
Most of the time it is an electrical component that fails when it gets hot.
Try cleaning the Intake Manifold where the EGR valve is attached.