Originally Posted by WiltedBeauty

A few days ago my 1990 Sentra started having acceleration problems. When you put it in gear, either reverse or drive, it is extremely slow at accelerating. It takes a minute or two to start speeding up, and then it accelerates with no problem up to about 70 - 80 km. I took it to a mechanic and after spending an hour, and $80, and checking the exhaust system, timing, fuel pressure and compression, he had no idea what was the problem. I don't know as much as I should about cars but it feels like there is a clog or something somewhere. Also the engine gets really hot, but the temperature gauge inside stays normal. The spark plugs have also been changed thinking that might be part of the problem but no luck. Someone suggested the catalytic converter may be plugged. If anyone might have any other suggestions for when I take it to another mechanic after the long weekend it would be greatly appreciated.