If the car has high miles, try checking the catalytic converter. If it is clogged it will cause the vehicle to lose power.
Their is no 1993 olds alero the first year is the 1999 sorry.
It is located over the cylinder head.
6 spark plugs 1 spark plug to every cylinder.
how to locate and chage plugs
either wrong spark plugs or sparkplug gap or you have to plug wires on wrong plugs
The spark plugs are on the front and back of a V6 (back ones are tough to get to) L4 right in front. Turn the engine off and take off the spark wires unscrew the plugs
on a 2002 olds alero 2.2 4 cylinder ecotec the spark plugs are located on top of the intake, under the cover that gives the engine size,it is possible that yours may also be located under this cover. All you have to do is remove the four bolts on top of the cover and your plugs will be under there.
1999olds have coil packs remove cover and pack on top of engine plugs should be right there no wire only thing need is boot replacements for the pack if needed
any platinum plugs will fine. they come stock platinum so best to put back in. brand preference will be up to u i have Bosch in mine
on my 2002 alero I havw the 2.2 4cylinder ecotec engine, on the intake there is a cover that says 2.2, remove the four bolts and the plugs are down in the little cylinder holes mine require a 5/8 spark plug socket and you will also need an extension.
Four
if you have the 2.2 liter ecotec engine, they are located right on top of the engine, they are located under the top black piece that says ecotec on it.