There are multiple problems with the car. Out of the things i've noticed, one, while driving the car hiccups, not shakes, just randomly and there's no pattern to it, also I'd change the gear, and rev, my rev goes up real high but the car takes forever to move, this problem happened recently. Also, whenever my gas tank level is under half, the car randomly shakes, hiccups and stalls. Recently, it's been doing that regardless of the gas level and I can't drive for more than 3 minutes without it stalling again. All these problems get worser on hotter days or whenever the car is hot. I've noticed the car itself is weaker than when I first bought it, in acceleration and speed. Another thing I noticed is that the car makes a weird screeching/breathing noise and whenever I hold the clutch down it gets quieter but it doesn't disappear. I've been told this is a fuel pump issue and I need to replace it. Is that the only problem with the car?