One problem related to engine and engine cooling has been reported for the 1999 Subaru Legacy. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 1999 Subaru Legacy based on all problems reported for the 1999 Legacy.
Started noticing a problem when coming down a long, steep hill with extensive shuddering when braking. When I got into town, there was a even more shuddering when coming to a stop at a red light. I had to pull on the parking brake to stop the car. When we started up again, it pulled very hard so we pulled over and when I put the car into neutral, the engine raced up above 4,000 rpm. I shut the engine off, but when it was started again, it raced again. I eased it safely home a short distance away with the uncontrolled acceleration problem continuing.