When turning key it just click we replaced the battery the starter and the sliniod we have chcked the voltage from the battery to the starter

Test the starter electrical circuit's .
Starter Voltage Drop
How to voltage drop test starter motor circuit

You need to learn voltage drop testing ! Voltage Drop Testing the Starter

Where do you here the click , at the starter ?Does the starter turn over slow ? Need to do a voltage drop test on starter circuit ! Possible Battery cable problem ! Starter Voltage Drop

12.34 is barely enough voltage. check for dirty connections at the starter and the battery. if these are okay then check for voltage at the starter large cable it should be battery voltage then with someone trying to start the car check voltage on the small terminal of the starter it should be battery voltage. if you don`t have this on either terminal then check for lose of voltage. what is the voltage at the battery when you try to start the car. if it drops below 11 volts then the battery is weak and either needs to be charged and tested or replaced. even with a jump start attempt a bad battery will not allow enough voltage to start the car. if these items are okay then replace the starter.

If no movement of the engine happens at all, then please check the following:

1) Battery voltage. You should have 12.5 volts and over. Try turning on the headlights and cranking. If they dim considerably, then your battery is likely flat and may need charging/replacing.

2) Battery voltage is fine, but nothing happens: Is there a clicking when you turn the key? If so, then check the starter motor. It's likely failed.

3) Battery voltage is fine, but there is no clicking when I turn the key. Check voltage to the starter motor solenoid on the top of the motor. If it is receiving power when you turn the key to crank, yet not moving/engaging, then replace it.

4) Battery is fine, but no power to starter motor and/or solenoid. Check all battery connections, leads and connections to the motor and engine body.

if the clicking noise is from the starter,you can tap the starter while someone tries to start the car.if it turns over and starts then the starter motor will need to be replaced.if you can get to the starter,using the multi-meter you can check to make sure the solenoid is getting battery voltage at the wire that gets voltage when the key is turned.if you do and you have battery voltage at the larger wire on the starter then this will also indicate the stater motor has a bad spot in it and will have to be replaced.the clicking noise is usually an indication that the solenoid is working passing the voltage to the starter armature but the starter is drawing too much amperage to turn the motor over.either way its recommended to replace the complete unit as if the solenoid is bad the motor itself will usually go bad shortly after.

COMMON CAUSES OF NO-CRANK NO-START

Low battery (Check battery voltage, recharge if low, or jump start with another vehicle or battery charger).
Loose or corroded battery cables (Inspect, clean and tighten BOTH ends of BOTH battery cables).
Bad starter relay wiring connections or ground connection (Inspect, clean, tighten wiring connections).
Bad starter relay/solenoid (Check for voltage at relay, if relay has voltage but there is no "click" when key is turned to start, replace relay).
Bad starter (Jump battery voltage direct to starter to see if it spins, or remove starter and have it bench tested at auto parts store).
Damaged starter drive or teeth on flywheel (Remove starter and inspect drive gear and flywheel teeth, replace damaged parts if necessary).
Bad ignition switch (Check to see if voltage reaches starter relay/solenoid when turn to start. If not, check for open P/N switch and brake or clutch pedal switch. Replace ignition switch if defective).
Open P/N safety switch, or open Brake Pedal Safety Switch (automatic transmission) or open Clutch Pedal Switch (manual transmission). Bypass switch with jumper wire to see if engine cranks, or use test light or voltmeter to check for voltage passing through switch when ignition is turned to start.
Engine seized due to bearing failure or internal damage (Use socket and long handle to see if engine can be turned by hand, if not engine is locked up).
Engine hydrolocked due to coolant leak from leaky head gasket (Use socket and wrench to see if engine rotates, remove spark plugs and see if coolant comes out or engine can not be cranked with plugs out).

soundss like a bad starter, use a test light on small wire going to starter, have somone hold key in the crank position if you get power to the small wire at starter then its a bad starter, hope this helps.

If you're hearing a click at the starter, then a fuse is most likely not the cause of your problem. If this is the case, you may be looking at a starter replacement or perhaps a starter rebuild at your local auto electric shop. Another thing you may want to check is while the engine is in "crank mode" (you'll need someone in the car turning the key of course), check voltage at the B+ (red battery cable) at the starter. If you see it rise to 12+ Volts at crank, the starter needs to be replaced. If not, check voltage again in "crank mode" at the terminal going to the starter solenoid. It will be a smaller-gauge wire. If you see voltage here as well, it just again proved out the starter to be at fault. If there is no voltage there at the solenoid, consider checking and/or replacing the starter relay.

I hope this helps! :)

if the clicking is repeated with out you releasing the key then the battry is in need of charging or replacing, if its a one click each time then the starter motor is faulty.