Recently, I bought a 2007 Ford Expedition and brought it from USA. One week later, I found that the car has two problems. First one, which is a major, is if going smooth, everything seems ok, but if you accelerate suddenly, a big sound comes up like an engine stops getting electricity or petrol then disappears. I went to many mechanics. Some of them advised me to do tune up; others suspected that I have a problem in the differential.
The second one is with the AC. Every time when I start the engine, a sound is coming up for a few seconds from the back right side in the rear holes. The AC is acceptable in the front right side holes behind the driver; it gives some cool not so good. But the left side holes give some heat instead of cool. By the way, I changed the AC gas, and it is the same. Can anyone please advise in any of these problems?
