Have a 1997 Dodge truck 1500 4x4 360 engine, going up steep grades or long grades on the freeway my A/C shuts off, when I let up on the gas, it starts up again, now its affecting my heater(heater puts out less heat ) its like a damper is open to outside air. I think its a vacuum leak, what are the tricks to locate the leak. sure need some help!
Thanks Billy Goat