I have E240 Model 2005 130,000 km, I live in Saudi Arabia where the outside temperature reaches 45 degrees Celsius or more.

sometimes when I start my engine and start moving, the engine trips, all instrument panel icons illuminate but no malfunction is there. Sometimes, the engine starts shaking tending to stop, but when I press the accelarator, it picks up and keeps running.

I feel like the engine cannot stand the load of the A/C.

I think there's unloader on the A/C so that it will start at minimum load, but after one minute or so, it goes to full load where the engine can't stand the load and trips, that is only what I feel.

Any help is appreciated.