My 2001 olds silhoutte will not turn over. Lights come on, radio comes on, took starter off and had it tested it was fine. Checked the switches and fuses none were blown. Checked the park neutral switch and it was fine. Any ideas please let me know.
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The humming would be the fuel pump coming on. It should only hum for a few seconds, then shut off.
Your problem is with the start circuit from the battery to the starter, or from the ignition switch to the starter solenoid. Check the connections at the starter (the big cable) for tightness. Is the battery charged up enough to turn the engine over? Check by turning headlights on and observe while someone turns key to crank. If they dim a LOT, then either battery is too low, or the starter is bad and needs removing for testing. If brightness doesn't change, then the circuit from ignition switch to starter solenoid is likely not working. Check for 12 volts at the small wire to starter solenoid with key in cranking position. If you have power there, the solenoid may be bad. Remove starter for testing. If no power at solenoid in starting position, then either the ignition switch is bad or the neutral safety switch might be the problem, or the wiring from the switch to the starter solenoid is not passing current. Good luck.
when you turn key on is there power to lights radio dash ? if yes check the starter relay and solenoid you can check easily using a test light find a good ground and a test light that works test light on battery first at the starter there will two wires one thick and will lead to battery the other wire is thin this is the wire you want to test have someone turn key to start while you test for power at wire if there is power at the wire replace starter the solenoid is deffective if there is no power at the starter sol wire then check starter relay
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try turning the engine by hand and giving it another try...if able as the starter is out of the way look at the teeth on the flywheel make sure they are not chewed up. if so there is your problem and a big job to replace that...if not just buy another starter and give it a try...your old starter my be having problems engaging the teeth...
Did you check to see if your old starter was any good, you may have a bad spot on your fly wheel and it is getting caught up on the bad spot and it want start try turning your fly wheel of the bad spot and then try to start it.
After I was able to diagnose that the new starter I first received was defective, I reinstalled the old starter that the store checked and claimed was good. It finally acted up while I had the car on the ramps. The old starter was starting as desired when finally on one key turn, it failed to turn over. After checking I had the power to the solenoid, I gave it a tap on the solenoid and the starter began to crank again. In shopping for replacement starters, I've found out that performance data in the box doesn't mean the starter will be functional. Many that I looked at were missing the water drain debris plugs. Some were even broken in the box, and one store tried to pass it off saying it was remanents from another starter since that company reused boxes. And in-store checks for starters are only as good as the people running it. I took the same starter in twice, and got two different results (good and horribly bad).
With a 12 volt test light and an assistant, check for a signal to (S) terminal on starter solenoid.If ok, check all connections at starter for clean and tight.If still no crank, replace starter. If no signal to (S) terminal, suspect ignition or neutral saftey switch.