93 Altima with starting problems

[jrs1532]

I have a 93 GXE with very low mileage (don't travel much). Lately, when I start the car, it runs fine until I stop. After 10 minutes of sitting and the engine is hot, it won't start. The engine has to cool down before it will start again. It leaves me stranded in parking lots. Spark plugs and fuel filter were replaced. Now signs are pointing to the power transistor. Any thoughts on what the problem could be? Any assistance is happily accepted.

[MaximA32]

How's your coolant levels?

[jrs1532]

All levels are correct. Any other suggestions?Thanks

[datsunnismo]

when u mean engine is hot do u mean over heating or just warmed up? And when u mean it wont start u mean it wont crank or cranks but just doesnt turn on?

[jrs1532]

The engine is warmed up to normal operating temperature. It turns over, but won't start. Very weak, intermittent spark coming out of the coil. This problem only happens when the engine is warm, but it doesn't do this all the time.