It.s under the plenum (that's the big silver thing) near the back. Don't replace or service it unless you have pinging or have failed emissions on the NOX test.
you only need to replace the EGR if the vacuum diaphragm inside is broken. you can check it with a vacuum gun. another reason to service valve is a bad sensor or carbon build up on the pintle.
Would this cause the car not to start If the EGR VALVE is bad
There are seven steps on how to replace the EGR valve in a 91 Chevy Corsica. Some of the step-by-step instructions are disconnect the car battery, unhook the air supply hose, and remove the EGR mounting mounting bolts with a socket wrench.
Check the EGR valve.
I HAVE NOTICED THAT FROM 87-92 MANY AUTO MAKERS DID NOT USE AN EGR VALVE...EXAMPLE 88FORD TAURUS,92 TOYOTA COROLLA
It is behind the throttle body, on the intake manifold.
Remove the wiring from the top of the EGR then unbolt it at the bottom of the EGR system. You may need to replace the gasket after replacing the EGR itself
Open the hood, look down at the engine. There is a little round device on the right side of the engine, just above the transmission bell housing. That's the EGR valve. Unplug the connectors and any vacuum lines (depending on type) then remove the two bolts and the EGR valve should come right out. Put the new one in in reverse order. BTW, an erg is a dyne centimeter squared. An EGR valve is an Exhaust Gas Recycling valve. Quite different concepts.
Should be on the front of the engine block, if you have a vortec it is on the lower maifold below the EGR valve.
The EGR (exhaust gas recirculation) valve redirects exhaust gases back to the intake manifold and cools the cylinders down. On something that old, it's probably vacuum operated. A vacuum line going into the top of the valve pulls up a pintle. One side of the valve has a hose from the exhaust, and the other side goes to the intake.
Fuel fail 39. EGR circuit. Faulty system operation. Is on my 90 xj6 as well- going to take EGR valve off and clean it- see what happens.
In the fuel tank.
try spark plugs, cap, rotor, maybe an egr valve, sensors, could be a few things, spark plugs are the easiest