What engine???
From what I been reading there is no egr on this engine.
The 1989 Mercury Sable 3.0 liter engine EGR valve is located on the firewall. The valve will be on the passenger side of the firewall.
The location of the EGR valve on a 1987 to 1989 Chevy Celebrity depends on which engine the car has. If the car has the 2.8L V6 the EGR valve mounts to the plenum near the throttle body. If the car has the 2.5L 4 cylinder engine the EGR valve mounts in the center of the intake manifold near the valve cover.
The valve is at the front of the engine just behind the A/C Compressor. Its just above the thermostat. Be careful as for some unknown reason GM has designed this valve without polarity. It can be installed upside down which will yield less than impressive results. Where is the EGR valve located on a 1995 Chevrolet Blazer with a vortec engine?
Up front, on top of the engine, next to the thermostat housing.
yes
internal
Yes.
The EGR valve is located at the front of the h22a4 engine. The EGR valve is right beside of the front of the EGR valve.
The 1989 Oldsmobile EGR valve is located on the top of the engine, near the back. It is quite simple to change.
As I recall, that engine does not have an EGR valve.