The OBD1 or "ALDL" (Assembly Line Data Link) connector is behind the lower right-hand corner of the glovebox, or above and to the right of the front passenger's feet.
In some Storms, the Haynes manual claims there are up to three connectors. The white one is the engine one, the orange one is the airbag/SIR, and the green one is the transaxle. My 1991 Storm apparently only has the white ALDL/OBD1 connector.
I wouldn't mess with the orange one, if it's there.
To put the ECM (Engine Control Module/Ignition Control Module/Engine Computer) into diagnostic mode, where it will flash codes at you using the "MIL" (Malfunction Indicator Light or "Check Engine" light), short pins 1 and 3 of the ALDL/OBD1 connector using a paperclip. When you then turn the key into the on position, the MIL should flash once, then pause a bit, then flash twice. That means code "12." If there are other codes, they will be flashed out as well. All codes are two digits.
there is a connector under the dash on the passenger side
Check the exhaust manifold.
under the plenum.
egr valve
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.
Its on the end of the fuel rail
rear of engine compartment near the bulkhead
Fuel pump is in the gas tank and it is not cheap.
rear of engine compartment near the bulkhead
fuses are in the drivers side kick panel....relays are located under the hood
All GEO Storm starters are interchangeable. It does not matter the year, engine or transmission. You can also get them from any Isuzu Impulse, Stylus, and 89 I-Mark RS. Some of the starters look different, or have different shapes. But all bolt up the same and will work. I have found a few have a different connector for the solinoid. This is delt with by splicing the wire with the correct type of connector from the donor car.
Inside the distributor.