the PVC vlave is located in a hole on the top of the valve cover next to the oil fill cap.
egr valve
The 1991 Geo Metro EGR valve can be located on the air cleaner housing. The valve will be on the back of the housing.
do you mean the PCV valve? the PCV valve is located in the intake manifold
Check the exhaust manifold.
under the plenum.
most all pcv valves are located on the valve cover
It should be in the main fuse block under the hood on the 91 Geo storm its located on the drivers side under the hood above the wheel well. Its the number 3 fuse.
rear of engine compartment near the bulkhead
Its on the end of the fuel rail
It should be towards the passenger side of the engine stuck in the valve cover.
rear of engine compartment near the bulkhead
Fuel pump is in the gas tank and it is not cheap.