Engine fire when running 70 mph, the tube from egr valve to dpfe ( egr sensor ) just fall and the isolator between firewall and engine just started to burn. I replaced the hose in place on the dpfe end killed the fire with water. Wiring is lightly burnt and the evaporator hoses started to melt but i can drive my car safely. I removed the isolator and cleaned all the mess... I have to repair hoses and main wiring to be sure it is safe.