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A slow crank or excessive power draw. Make sure that your battery is in good condition before condemning your starter.
decribe two causes of higher than normal starter current draw
Check battery voltage Check battery cables Remove and test starter for drag and amperage draw Repair or replace starter
there is a draw of power in your electrical system most common places for this draw is in the glove box or trunk because the lights do not turn off anymore
have the following checked: do a battery test to verify that the battery is good. do an alternator test, depending on the vehicle, it should show 14+ volts output, and have normal diode ripple. make sure the starter selenoid is good, sometimes a faulty selenoid will draw power. there may be a parasitic draw on the battery, have an auto electric shop trace the problem. == answer== check battery. if battery is poor replace also check starter. little known fact in fords that a bad starter will bleed and drain a battery giving bad indication that the battery is not good
only way to fix that problem, is to find out what is drawing the power.This can be caused by an accesory that doesnt not shut power off when ignition is shut off, or by a short in the wiring in the vehicle somewherehave the starter motor checked for a short as well, as some starters when worn will draw enuff power to drain battery, but not enuff to turn starter,when ignition is off.
It may be the starter solenoid that is clicking. If the battery is very low when you try to start the car, the solenoid will engage but the starter will not turn. Because the battery is so low, there is not enough power to hold the solenoid closed (in the start position) and try to turn the started so as the starter draws power, the solenoid clicks open, The starter doesn't draw any power with the solenoid open so the solenoid has power to close again, the starter tries to draw power and the cycle repeats. The sound seems to come from behind the glovebox because the solenoid is probably mounted on the passenger side of the engine compartment.
how should i know
battery no longer can store a electrical charge, a charging system failure, a parasitic draw,
Ideally you turn of everything, lights, radio and aircon, This way your starter motor can draw maximum power from the battery to concentrate it into starting the engine.
A bad connection or heavy draw.
Usually the Anti-Theft/Security features will draw the most power. You can measure the current draw from the battery (with the engine off) if you have access to a multimeter. It should be in the mA range.