1990 Buick Century Ignition Danger

1990 BUICK CENTURY
75,000 MILES • 6 CYL • FWD • AUTOMATIC
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RJFTMR
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  • 3 POSTS
I own a 1990 Buick Century Custom , 6cyl. I bought a new battery and 2 new cables. When I attempted to connect the cables to the battery, the engine cranks-trying to start-as if I turned the ignition key. What's wrong?

Thank You.
May 18, 2010 at 2:06 AM
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INTERNETMECHANIC
  • ✓Experienced Mechanic
  • 700 POSTS
I'd take the S terminal loose from the starter solenoid, then test. If it doesn't crank, the circuit for the S terminal is either shorted to voltage or something wrong with ignition switch. The S terminal should not be hot unless key is in the crank position. If it still cranks with S terminal disconnected, I'd have to suspect faulty starter/solenoid.
May 19, 2010 at 5:54 AM
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