Hi! While I have 13.7 volts at my battery and everything inside sounds "strong", i.e. A/C blowers, power locks etc. my car won't start. I turn the key and nothing happens; no "click-click-click"; nothing.
Suspect starter but don't know where it's located. Wanted to check 12V to the starter.
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Re: Car won't start
Is it standard trasmission or auto standard look for a swicht under the clucht pedal if so jump it put a wire beetwenn the therminal if auto put it in neutral try it maybe defective neutral swicht move shifter up and down fast good luck pierre
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I have a thought you may try testing your battery voltage with the car turned off .It should read 12 volts or higher if not charge battery than check again if battery is lower than 12 volts after charging replace battery.If 12 volts or higher start engine check voltage on battery again it should be 13 volts to 14.5 volts not higher if voltage readings are lower than 13 volts or higher than 14.5 volts replace alternator.
The radio needs 12 volts to run, possibly as little as 10.5 volts, and at a small amount of amperage. A car starter is much more power hungry, and requires at least 12 volts at about 400 amps or so to start a car...minimum, and thats a small engine. Long story short. Your battery cannot hold a load. It needs replacing.
I am taking it you have a new battery. You put on a alternator. Now you need to charge the battery until it is fully charged. That way the car will run for a while before it stalls from undervoltage. With the battery charged check the voltage at the battery. It should be 12 to 13 volts. Now start the car and check the voltage it should be up to almost 14 volts. If that is good check with lights and heater blower on should be at least 13.5 volts. If the voltage does not increase you either have a bad alternator or it is not getting excited by the ignition switch on the vehicle. So you should find the wire that energizes the alternator and turn the key on it should have 12 volts on it. Hope all this helps. please rate my answer so I get points.
Sounds like you have a toasted battery or alternator. Have you performed a load test on the battery? Have you tried to charge the battery? First remove the battery and charge it externally from the vehicle. If the battery won't hold a charge, or won't hold a charge of 12 volts, replace it. Once you have the vehicle started, test the operation of the alternator. It should be putting out at least 13 volts back to the battery to keep it charged - if it is putting less than 13 volts or more than 16 volts, replace the alternator.
Sounds like battery or battery cable problems to me.
If the battery is bad, you cannot trust ANYTHING the computer is telling you. They tend to set all kinds of codes when the battery has a shorted cell. (including fuel pump circuit and transmission system codes) They get "delirious" from malnutrition. You need to have your charging/starting system thoroughly tested.
Sounds like you have a low voltage problem.Take a volt meter and battery voltage first it should be 12-12.7 volts not running and key off.Then start engine and check the voltage coming out of the alternator it should be 13-14.7 volts.If one of these are not within these specs then replace which everone that is bad.
It needs to be looked at,hook a volt meter to the battery,and start the engine,turn the ac on high blower,and the head lights on,the alternator should be putting out 13.65 volts to 14.25 volts,if it is any lower than this,replace the alternator,now,if the reading is not the same as in the vehicles volt meter,then the cables,positive and negative need to be replaced,the cables get old,and corrode on the inside and break down,they do not carry the current as they should.Shuold you decide to replace them,go with a larger diameter cable,both positive,and negative.
Start the engine and turn on all your lights and your a/c blower on high. You should have 13 to 14.5 volts at your battery, if you have less then 13 volts. Then you have a weak alternator or faulty voltage regulator, to test the regulator, turn everything off and check the voltage again with the engine running. You should have 13 to 14.5 volts again, if anything different as to being too high or low, then you have a faulty regulator which is built in to the alternator so your still going to have to replace it. To test the battery, you should have 11.5 to 12 volts with everything off and engine not running.
Good luck and hope this help. A battery older then 4 years may no long be able to hold a charge and will need to be replaced. A bad battery will cause the alternator to fail much quicker then a good battery.
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