Why car wont start on 2000 chevy impala i got new plugs new wires new module but still wont start

Check the fuel pressure at the engine and plugs for spark (ignition module).

There are numerous reasons for a vehicle not to start. You need to determine if the engine is getting fuel and spark. If one or the other is not present, there will be a no start. Remove a spark plug wire and ground it to the engine. Crank engine over and you should see a spark coming from the boot to the engine. If no spark present, possible crank sensor/ignition module/wiring/computer problem. If spark present, suspect fuel delivery problem. Fuel pump/relay/injector problem/wiring/computer. There can be a considerable amount of diagnostics needed to isolate the problem and correct it.

Pretty sure I know your issue... Its really common in gm cars.. It happened to my buick.. I found a site that has the fix I even did it myself.. when I took it to the mechanic they were trying to charge me 400+.. read over it Im sure it will help

First you must determine if the fuel is stopping or the spark is stopping..If the fuel is stopping this could be a computer problem.. If the spark is stopping then it could be the IGN Module in the distributer. or any nomber of sensors. Squirt a little fuel directly into the Throttle body on the intake manifold.. If the truck runs longer its probably loss of fuel.. Do this several times to make sure, be careful and only use a small amounty of fuel.. you do not want a fire.. RE: Spark: Take a plug wire and an old plug..put the wire on the plug.. hold the plug against a good ground .. have someone crank the engine .. does the plug stop firing? The engine dies.. and will not restart for a minuet or so.. during this "no start" time do the plug test. If the plug will not fire during this time take the module out and take it to Orillys Auto parts.. They can test it.. really expensive part. Don't replace until you know it is BAD..

ADVANCE AUTO HAS A MACHINE TO TEST MODULES.. BUT IF I WENT THROUGH THE HASSTLE TO REMOVE IT I WOULD REPLACE IT..YOU ARE DOING WHAT IS CALLED SHOTGUN REPAIR..REPLACING PARTS ON A GUESS..NEED TO FIND OUT WHAT YOU ARE MISSING SPARK,,, FUEL,, COMPRESION...GET BACK WITH ME

Your Spark Plugs May Be Flooded, You May Need To Replace Your Spark Plugs, Or Just Get A Complete Tune-Up

You are getting good spark to the plugs? Have to assume you retimed it after you changed the rotor and cap. Wires are good?

Could be the ignition module, but they usually are either good or bad and not itermittent(sp)...

If it trying but just not 'catching'.. seems like a timing issue, or possibly the coil (although coils tend to be good or bad as well)

Start with fuel system. Listen for fuel pump humm at fuel tank No humm check wiring to pump for power. Then check for spark at plugs and wires. Remove wire from coil and hold near engine and see arch when you crank. No arch. Replace ignition Modular inside distributor cap or cap or rotor

the fuel pump is located inthe gas tank, there is no access panel the fuel tank must be dropped to replace the fuel pump module.
AIRTEX Part # E3542M {Fuel Pump Module}
Wiring Harness Included $223.79

Make sure that your fuel presure is up to at least 60 psi if not that could be your problem. If not, make sure you are getting spark, if not could be your Crank sensor or ingniton module ECM. Usually if your Engine control module wouldn't be bad because of your fuel pump is working, but may not be putting out the proper pressure for the fuel system. Fuel Pumps are a Problem with that year..