ok, here we go, when i turn my key to the on position, i hear the fuel pump kick on, and it stays on forever and at the same time i hear the relay clicking under the dash, and the car turns over but wont start. I had a mechanic check the fuel pressure which is ok and the fuel is reaching the injectors but its not going any farther. Here is the worst part, this problem is intermittant, and i believe its humidity related, any ideas?????

Try another key first, or clean the contacts on the key and in the switch with a cotton swab and alcohol.

If that doesn't work, check your battery cables at BOTH ends for corrosion. Remove them, clean, reinstall.