Without diagnosing the problem, it is not possible to say what the problem is.
If the rpm is erratic, the most likely fault would be a failed ignition coil which could fail when it heats up.
The above link explains what to look for if you are able to crank but not start.
another common cause of intermittent stalling and non starting would be a faulty PGM-FI main relay. Resoldering the relay circuit board usually solves the problem.
Friday, August 12th, 2011 AT 8:20 PM