As stated the unit will run fine for up to 3 hrs then dive into limp mode. Cycle the key and it will run anywhere from 45 min to 2 hrs then dive again. It does NOT display an error code. Check engine light will appear. Fluids are good. Any help is appreciated. This job was given to me after a different tech replaced the cap rotor plugs and wires then called it a day. Vaporizer had a sight build up going into the dry gas hose, nothing obscene.