no
The motor chokes at full throttle because either the exhaust valves are bad and cause the motor to loose compression at full throttle or the carb has an air leak.
Your 1987 Astro might go full throttle when the engine is started because the throttle is sticking. This could also be a problem with the starter or the ignition hanging during the start.
If your 2004 Jeep 4.0 engine has cranked up at full throttle, take it to a professional mechanic.
Assuming this is the 4.3 engine, the throttle body would be found on top center of the engine. The air filter assembly would have to be removed to get a full view of the throttle body.
full throttle
There is coolant in the engine block when the engine is not running. The engine block, heater, hoses and radiator remain full when engine is not running.
Large vacuum leak. Check the hoses that hook to the intake manifold.
It may be that the idle is set at max rpm on your carberator
The point midway from no throttle to full throttle.
Full Throttle - film - was created in 1995.
Full Throttle - drink - was created in 2004.