| | Car won't accelerate in 4th gear
So today I was on the freeway, and I noticed that when I gave my car some gas, the RPM's would go up, but the car wouldn't go any faster. I got off on the next exit, and my car accelerated normally through gears 1-3. But once it shifted into 4th, the RPM's went up, and the car wouldn't really accelerate. Even if I floored it, the engine would rev, but wouldn't really go any faster. Almost as if it was in neutral.
What could be causing this?