Re: 2000 EX not starting. Out of ideas. plz Help!
i had a similar problem but my rad cracked and coolant went everywere i just replaced my rad and it was working again.
It's also possible that the car has more than one thing that is causing a hard start. You could also have a bad ignition switch, a bad igniter and a bad ignition coil.
If there isn't any spark, move your spark tester to the coil tower to rule out plug wires, cap or rotor. If you still don't have spark, you have a bad ignition coil.
To check the igniter itself, you will need a scope. The igniter terminal of the igniter will have a 10-volt reference voltage. The computer will ground this terminal when it receives a pulse from the permanent magnet sensor in the distributor. The ignition coil produces spark when the igniter releases ground from the negative terminal of the coil. By probing the igniter signal and coil negative you check the input and output of the igniter. If there is a good igniter signal and nothing at the negative side of the coil, the igniter is bad.
The main relay will give you the same symptoms as a bad coil or a bad igniter. A main relay usually only fails when the weather is really hot. You might have a hard start every now and then, but not enough to really cause you any concern, but when an igniter or a coil fails, the car won't start at all until it cools down and that will be a major concern. i would try a Honda Main Relay Test.