My 2004 Jeep Rubicon's fuel pump became faulty at around 60,000 miles. I had a hard to start problem that got worse with time and the engine warning light was on. I took it to the auto shop and that's what their tests pinpointed citing low fuel pressure, so I gave them the go to change it. My jeep ran like new for a few days and wouldn't start on the 3rd day. I had my jeep towed back to the shop and they replaced the defected fuel pump for free.
My air condition gave out way before 60,000 miles. I did not have air condition for more than 10 years. I watched some videos on YouTube and changed the blower resistor, but that only fixed the blower air flow controls. The air condition direction control was still not working. I found that the air tube coming into the interior from under the hood was broken. I think this is a common problem, since the tube is resting on a hot pipe. I used an aquarium air pump tube and reconnected the broken part and then the air condition control worked as should, but the air coming out was warm, so I added refrigerant, and now my air condition is running like new.