My 98 bonda accord ex wont start

step s: to start. all gas cars is easy

1. battery charged, to 12.6v rested.
2. all fuses good, if any of 4 EFI fuses blow , the PCM dies.
3. does it crank, if it dont crank , ask for help, (try jumper cable starts)
4. got spark
5. does test fuel work?

check your postive battery cables that model should have 2 cables at the postive with a spacer between them they are famous to corrrode under the red covers requiring the ends to be replaced or the whole of both to be replaced if corrosion has traveled down into the cables

try your fuses etc ect

You might want to have then check the alternator. Sometimes an alternator will test ok but once it has been running for a while, the dilinoids (not sure about the spelling), will basically cause a short circuit in the electrical system and the alternator is no longer charging the battery which drains the battery.

sounds like you may have a bad ground cable. just as a test you can run a thick wire from the battery to the frame or another good ground on the engine see if this makes a difference if it does replace the ground cable.

with a new starter, this sounds like a bad battery cable or terminal end. the easier way to figure this out w/out checking the voltage drop across a whole battery cable is to affix the jumper cables strategically to find the bad one. Put jumper (+) on batt (+) and jumper (-) directly onto a piece of unpainted engine metal and not in the way of moving parts. If it starts this way then you've got a bad ground cable. If it didn't start, put jumper (+) on the hot post of the starter solenoid (there are 2 posts, only touch the one w/ the fatter cable going to it) or on a remote jump point if equipped, and put jumper (-) to batt (-). If it now starts you need a positive battery cable, or just a battery-to-starter cable (if separate)

Change the ignition switch at key.

either have a shop scan it for trouble codes or buy a scanner your self at local parts store have OBDII scanner and find out for your self it could be a number of things.

Have the battery checked.  You may have heard a fast clicking sound when the lights were flickering, if so it's coming from the starter solenoid.  If the battery is bad, have the voltage regulator and alternator checked also.  A bad voltage regulator or alternator will kill the new battery.    

Try starting with jumper cables, if that works, you can pull the battery out, take it to a auto parts store that will test it for free (most parts stores will do this).  If it's bad, you can put a new battery in and then drive straight to somewhere to have the charging system tested.  

I had a very similar problem with my 2005 accord a few months ago. Try jump starting the car with jumper cables. If the car starts and everything works normally, then the battery is probably your problem. This turned out to be my problem. Good luck.