2005 SE 4x4
quick background, my pathy died in the middle of the interstate and was idling very rough while on the side of the road. and every time i would press a gas pedal, it would die immediately. had it towed to a local mechanic. they witnessed rough idling, but it went away immediately once they sprayed starting fluid into the break vacuum tube. i have put ~100 miles afterwards and have yet to experience any issues. nevertheless, i took it to one of my trusted mechanics who promised to perform tests on the pump to determine whether it is faulty and is in need of replacement. unfortunately, he was unable to perform such test, and said that this particular pump (or perhaps the vehicle) appears to require a special tool that he does not have, and suggested inquiring with the dealership. so my question is how do i go about testing a fuel pump? is there such a "special" tool? can i perhaps rent it from an auto store (napa, auto zone, etc) the way i have in the past with other tools, or is the dealership the only option? i really need to get to the bottom of this, as i am paranoid about having the car die on me in the middle of a busy highway once again. thanks!!!