cant start engine.?

Question

cant start engine. Here a clicking noise. I have the battery, bttry cranking amp, and the alternator tested and they are good. replaced starter and still have the same problem. pls help

Answer 1

What kind of car? It could be the starter solenoid, which is separate from the starter on some cars/trucks. My old Ford Ranger had this setup. I would have thought the battery... Check the connections to the battery and make sure they are tight and if there's any corrosion on the connectors get rid of it with a wire brush. This can cause a high resistance connection. You might also have a problem in the cables, you can check them with an ohmmeter.

Answer 2

Ok, great. But since your having continuing problems cranking the engine, you need to buy a Digital Multi- Meter (DMM) at Sears or an auto store to measure your battery voltage accurately. Now that you've had your battery load tested and found good, you still need to make sure it reads at least 12.60 Volts across its terminals in order for it to be fully charged and ready to crank the engine. If it only reads 12.0 volts, it's severely undercharged and you need to recharge your battery with the Sears battery charger or similar below. Once you get the engine cranking, the DMM needs to read a minimum of 9.5 Volts across the battery while the engine's cranking in order to power your computer electronics properly. If the starter is good, the clicking noise usually means insufficient battery power is getting through the solenoid to the starter motor, which means you still may have a discharged battery (or even bad battery) problem. If your battery is 4 to 5 years old, don't fool with it anymore!! Buy a new battery. It's not worth the aggravation to have a battery that won't hold a charge.

Answer 3

Clean the connectors between the battery and the battery clamps.

Also make sure they are tight.

I would also double check the "replaced" starter motor to be sure that it is indeed working appropriately. When you turn the key do you hear a wizzing sound? If so the starter solenoid may not be engaging the engine.

If this has been checked, then try shifting the car into neutral and starting the car from neutral, if it does then it could be a neutral safety start switch.

Step on the brake, and see if your brake lights come on. If they don't, some cars have a built in safety that prevents the car from starting if your not stepping on the brake. It typically uses the same signal from the brake light switch. So if the brake lights don't turn on when you step on the brake a safety mechanism may be preventing the car from starting. Try switching out the brake light switch.

Try manually turning over the engine with a socket and ratchet to be sure the engine hasn't seized for some reason.

If everything else has checked out, it could be the ignition switch itself is worn or broken.

Answer 4

It might be the starter solenoid - follow the wires from the starter motor back to the solenoid. Make sure the connections aren't just corroded (in which case you might just be able to clean them).

If not, then replace the solenoid - make sure to use some conductive grease on the contacts to keep it from getting corroded.

Answer 5

sounds like your solenoid is gone, bud. That sounds like it might be your problem.