The 1989 Oldsmobile EGR valve is located on the top of the engine, near the back. It is quite simple to change.
It's going to be off the valve cover(s) one or the other. Plugged right into it.
UNDER HOOD, CENTER, UPPER ENGINE AREA, TOP OF ENGINE, MOUNTED IN PASSENGER SIDE OF INTAKE MANIFOLD
In the transmission in front of the modulator
The EGR valve, on your 1995 Oldsmobile 2.3 liter engine, is located on the side of the air filter housing. The valve should be labeled as such.
THERE IS NOT ONE.
With your hands
no egr valve on 1999 to 2001 2.4 alero
The 1992 Oldsmobile IAC valve can be found attached to the firewall in the engine compartment. The valve will be on the passenger side of the firewall.
PCV Valve is located near front of hood on the engine block between the fuel injectors.
its in back valve cover at fire wall i removed the plenum from the intake manifold to get at it.
Its located on the bottom of the throttle body right next to the fuel pressure valve.
on the 3.4L V6 it is located on the front valve cover, just to the right of the oil filler cap. there is a hose with a 90 degree boot on it. remove that and pull out the PCV valve.