[email protected] hav e a 94 cavalier that just had the fuel pump replaced, along with the fuel filter, spark plugs and thermostat. Has at minimum half a tank of gas and will not start. Cranks over really well. Told to check ignition module but need location.and how to remove,

• What was the reason for changing the plugs,wires,fuel filter and fuel pump ?
• Was it running good before ?
• Could be crossed spark plug wires, check to see if they are going to the right plugs
• Check to see if fuel filter is on the right way
• Check to see what your fuel pressure is and if it's within specs

Check your lines, specifically where your filter housing goes into the fuel tank. I had the same issue and I just had to replace that filter along with a hose. It seems the line somehow got clogged. I hope you find this helpful.

FUEL PUMP ONLY HUM'S FOR 2 SECONDS WHEN YOU TURN KEY TO ON, NOT START, POSITION. YOU CANNOT HEAR PUMP RUN WHEN CAR IS RUNNING ! THIS 2 SEC., IS THE PUMP PRIMING ITSELF TO START ENGINE. YOU MIGHT BE HEARING EITHER THE POWER STEERING OR WHATEVER, NOT THE FUEL PUMP!!!!!! GIVEN THE YEAR OF THIS CAR, YOUR FUEL PUMP COULD BE BAD, CHECK FUSES, RELAY, GROUND WIRES, TO PUMP, ALSO CHANGE YOUR FUEL FILTER !!!!! AIR FILTER ALSO !!!!!!! SPARK PLUG WIRES SHOULD ALSO BE REPLACED !!!!

could be the cat is plugged

well the light is blinking because of the misfire it is setting a P0300 engine missfire detected, a plugged fuel injector will cause that misfire or a incorrectly gapped spark plug, also a bad egr valve will cause a rough idle and acceleration problems.but for a correct fix with out throwing parts at it will have to be done by a pro

you need to check see if it is getting fuel sounds like a clogged fuel filter and when you pump the fuel peddle you are puttting it clear flood mood which may also be leaking fuel injectors and flooding the cylinders with fuel but most likely is a clogged fuel filter try spraying starter fluid in throttle body and if starts its clogged fuel filter

1 Inspect Choke Thermostat Stuck or Improperly Functioning Choke Thermostat. 2 Inspect Fuel Filter Clogged or Dirty Fuel Filter. 3 Inspect Relay - Fuel Pumpat Faulty Fuel Pump Relay. 4 Inspect Fuel Injector Pressure Regulator Faulty Fuel Injector Pressure Regulator. 5 Inspect Fuel Pump Low Fuel Pressure. 6 Inspect Engine Control Computer Incorrect Operating Information Being Delivered and Sent From The EEC. 7 Inspect Fuel Pump Strainer Clogged or Dirty Fuel Pump Strainerat this is a list of things to check as u have a starting issue this should help u find the problem
1 Inspect Ignition Switch Improperly Connected or Faulty Ignition Switch. 2 Inspect Battery Battery Discharged or Faulty. 3 Inspect Battery Cable Coroded, Broken, Shorted or Poorly Connected Battery Cable. 4 Inspect Solenoid Switch Starter Solenoid Switch Faulty. 5 Inspect Starter Starter Motor Faulty. 6 Inspect Wireset Worn or Damaged Spark Plug Wires. 7 Inspect Coil -Ignition- Faulty Ignition Coil. 8 Inspect Distributor Cap Loose, Cracked or Worn Distributor Cap. 9 Inspect Spark Plug Incorrectly Gapped or Fouled Spark Plug(s). 10 Inspect Distributor Cap and Rotor Kit Loose, Cracked or Worn Distributor Cap. 11 Inspect Fuel Tank Fuel Tank Empty. 12 Inspect Carburetor Worn, Faulty or Damaged Carburetor. 13 Inspect Fuel Pump Faulty Fuel Pump.

Did you try checking or replacing the coolant sensor? I think you should replace it along with the thermostat. Are there any problems like sputtering or any unusual noises or symptoms? Smoke, anything?

If you haven't changed the filter in a long time change it. Diagnostics are very helpful but I'd change that filter first (you are not wasting $ if you have not done it because it is likely due for a change) With the key on, can you hear the pump running? If you can, that's a good thing.
good luck and post back if it works (or not)

it sounds like the check valve in the fuel pump is letting the fuel bleed back into the tank