90 Honda Accord will not crank or start. It has full power, checked fluids, pulled main relay and it looks fine. Starting to think it might be the starter but it was just replaced a few months ago.

About the only thing you didn't mention was the starter itself. You could have it tested. But before that, try to see if you have power on the small wire to starter solenoid on the starter, when key is held in cranking position. Pull the small wire off and check for power with a multimeter or a testlight while someone holds the key in crank. This is the signal wire from ignition switch that closes the elec. contacts inside solenoid so the starter gets full power from the battery to spin. (This wire also is in the circuit with the clutch switch and the starter relay.) If you have power on this wire in crank, it is very likely the starter is bad. If there is no power, check that circuit out. It is losing power somewhere from switch to starter solenoid. Good luck.

I would put a fuel pressure gauge on the car. It sounds like it might be a fuel pump or fuel pressure issue. It is possible that it is the relay, but you can check that easily by switching it with another relay.

You should try replacing the fuel pump main relay, all the symptoms you are explaining point to the relay. I just went through the same problem with my 90 accord, replacing the main relay make it start perfectly every time.
good luck
Matt

Try replacing the fuel pump main relay. My 90 accord had the same problem when the main relay went bad, it would take almost 10 tries to start. The Fuel pump main relay is located under under the dashboard on the far left side. The main relay is held in by a 10 or 12 mm bolt. It is small, grey, and says mitsuba main relay on it. replacing this should fix your starting problem. Also check all fuses.
Hope this helps
Matt

main relay for the no start when its hot.... and cap,rotor, wires for the no start when its wet.....

replace main relay this will keep it from starting when hot out. 1994 honda accord, have a good day !!

Start with this at the time it wont start and only cranks over squirt some starting fluid in the intake if it starts and then dies out you have a fuel problem. If youve never changed out the fuel filter that would be a good place to start. If after you squirt some starting fluid in it and it doesnt even start check for spark at the plugs then at the coil and so on. Dont get to stuck on the relay if the relay was bad it wouldnt even start also if you have a way to check the fuel pressure check it and make sure its within specs.

possible main relay

under dash near steering column

main relay controls fuel system

I think you should check the air filter or air intake. It seems like it's not gettin and air to start since when you spray the starting fluid it's runs but stop and it stalls. I think that it's the air supply for the car.

What engine? 4 or 6. Do you mean it will turn over but not start?

Check out this link. I just type you a long paragraph on here but i don't think it took. Anyway, It was the main relay located under the steering wheel. Same thing was happening and the car cranks fine after replacing it. 25 dollar part.http://www.cb7tuner.com/vbb/showthread.php?t=53888