Cadillac Repair: car wont crank, bla bla, cadillac deville

Question
QUESTION: (1992 Cadillac Deville) Iv cheacked all the fuses, replaced the starter, bla bla, it only starts when it wants to?? It will run for a while the do it again. It had done this for about 3 months now and i cant figgure it out?? CAN YOU HELP??(it wnt crank, just a click and nothing)

ANSWER: What is clicking ?. The starter or the starter relay behind the glove box ?.

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QUESTION:
it is from the starter, Thank you

Answer
What we need to do is access the starter and perform some simple voltage tests at the starter, But FIRST I would like you to perform a simple test at the starter relay.

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onlineautohelp@msn.com