I have a standard 2001 Corolla (basic model) with 89,000 miles. When I back down a steep driveway and then go into first on flat ground, or when I start on a flat driveway and start in first on a big hill, I lose power. It seems like there is no gas reaching the engine. After 20-30 feet of crawling and almost stalling, the engine regains power and I am able to continue normally. Now this has started happening when I am driving on flat ground as well, always just after I start the car.
Any ideas what is wrong?