one of two things, the upper o2 sensor or the camshaft position sensor
a bad sensor. the alero is notorius for many bad sensors. not an expensive replacement though
Bad regulator
The RPMs and the engine of the 2001 Oldsmobile Alero might surge if there is a problem with the oxygen or fuel sensor. It may also surge if there is a problem with the fuel injectors or the fuel filter.
this could be the cause of a bad toque converter
the car needs to be taken to the junkyard as it is total garbage and should not be on the road
Are parts interchangable from a 1999 alero to a 2001 alero
torkconveter lockup switch is faulty
how to change drive belt 2001 alero
In my 1999 Alero, it did this and it was traced back to the power steering pump going bad.
It's located on the transmission.
where is the cabin filter on a 200l alero
It could be that the connector wire broke in the rear. It happened to me.