One more thing to rule out is power delivery: if you’re using an extension cord or power strip the voltage drop can slow the motor and cut airflow, and make it overheat - plug it straight into a wall outlet. When you clean, wash and fully dry the rear foam prefilter and scrub the heater cage; a quick wipe won’t remove the baked-on film. If it still trips, the cycling usually gets more frequent, which is a good sign it’s time to replace rather than chase a tired thermostat or dragging motor.
Texture and heat make suction cups and sticky gels fail on grainy vinyl, but closed cell acrylic foam tape holds under high temps and rough surfaces. Bond a thin rigid disk, keep the lever short to load in shear not peel, and clean then let it set a day for a lasting mount.
