1993 Lexus LS 400

Electrical problem
1993 Lexus LS 400 V8 Two Wheel Drive Automatic 089.50 miles

This vehicle sometimes is hard to crank but when carnk will run for a few munutes and will shut off and will not start for a while most of the times. One of the igniter is heating up more so than the other one is. I have changed the crank shaft sensor and still does the dame thing. It has been indicating code #15 which isn't on the listing of error on check engine light. I don't think that it is 24 for when jumper is used to access code the check engene light will flash one time, then after a couple of moments it will flash one log flash and the five quick flashes. This codes repeats it self. Is it a coil or camshaft sensor or some other problem.
August 4, 2010.

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