I have a 95 Firebird 3.4 V-6 wondering if there is a fuel pump shut offon the car the car has been sitting for about 2 years and now wont startFuel filter was replaced and still no fuel, not sure if it is pump or switch. I have checked the harness and can find nothing broken there

Any codes? Check fuel pump fuse, fuel filter.

This link might help you with the antitheft security if that is the problem
http://vatspasslockpasskeysecurityhelp.yolasite.com/

Hi, sounds like it's loading up. Recommend you check the fuel pressure regulator for a torn diaphram. Please see my tip at http://www.fixya.com/cars/r7427423-fix_poor_idle_high_idle_stalling_fuel . These are generic instructions. If you get stuck or need specific instructions for your car, please get back to me with model, year and engine info

pull the fuel pump fuse and relay it wont come on then. hope this helps

pres.reg.or TPS

did you install the oil pressure switch origional to the tahoe? The tahoe uses a low oil pressure shutdown, instead of an inertia switch to shut off the fuel pump in the event of an accident. If the pressure circuit does not close within 3 seconds after the engine starts the fuel pump shuts off. This is in case the truck is on its side or upside down the pump will shut off.

Buy a ECU from a local salvage and swap them out. It might just work. If not then you might have a short somewhere in the system causing it to shut down.

there is a idle adjusment screw, jus under the air filter.. check that, also check your spark plugs and wires to make sure all are firing and lastly i would look into the timing of it since its the hardest to do..

sitting in fuel for two years could have clogged both of them yes. go to the fuel pump electrical connector and measure voltage while someone turns on the key, it will only power for about 3-8 seconds, did you get voltage? if so then I would say the pumps are clogged. if not then check the fuses and relay. Yes you can apply 12 volts of power directly to the pump at the positive terminal, also ground it, but I would be hesitant due to the possibliity of sparks.

yes the fuel pump is in the gas tank but before you change it checkout the fuel pump relay and fuses first there should be a fuel pump relay in the fuse box under the hood and also checkout all of the fuses under dash on the driver side it could even be the fuse to you sending unit