Four problems related to fuel injection have been reported for the 1999 Oldsmobile Alero. The most recently reported issues are listed below.
Locked up ignition switch cruise control fell apart gear shift shifter not secure and slides up the shift. . Both oxygen sensors failed all four windows electric motors, and racks have been replaced front end vibration when stopped or parked on incline dash board leather cover came loose and rolled up like a used rug original fuel filter have to be pried out of line and then pieces left had to be removed with needle nose pliers. Fuel gauge as never worked. Now its running about 4 miles and then quits, sets for 30 minutes and drive another 4 miles then quits. Code reader says engine running lean, (problem is 4 to 5 sensors including the injectors could be causing this, no way to tell with replacing them until it runs. The expense of this could be 1000 to 3000 dollars. Electric door locks failed , replace switch, only works part of the time.
Fuel injectors failed, car started to rumble when idle and would sputter when foot on gas. The fuel injector #6 was sticking and the same thing problem occurred.
No summary.
The front brakes and rotors have been replaced twice. The brakes are vibrating again when you try to stop at a higher rate of speed. The check engine light and service engine soon have been on at least 6 times. The fuel injectors have had to be replaced 4 times.