1990 240SX - strating problem

[joecooch51]

1990 240SX - Auto car will not start when hot and sitting about 1/2 hr - this only happens in hot weather. All winter car running fine. Have changed starter 3 times. Replaced battery and ground wire. Starter seems to be fine. Read there is a relay that might be bad - can someone tell me where it is or how to bypass it if you have another suggestion I would take it.

Thanks

[U12 2NR]

the crank angle position sensor, a faulty one will fail to operate when overly heated.

[joecooch51]

Where do I find it??