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car wont start with the keys

there are for connections on the starter solenoid. these are:
1.) the + from the battery to the solenoid
2.) the earth from the starter motor ground to the solenoid
3.) the wire from the ignition switch ( when in cranking)
4.) the wire from the + coil.

Ok, there is an internal connection in the solenoid. This forms a closed circuit when there is current in the switch wiring( when cranking) and from the battery + side as explained above.

I have tested the current going to the solenoid from the switch and it gives a reading of 12.15 V. I have also tested the voltage from the battery[12.37V] and have found a good ground on the solenoid producing 12,37V.

The car will not start. The Solenoid is NOT faulty. I have removed the starter and the solenoid from the starter and it worked well when not connected to the starter motor.

The car will start if you bridge the + battery with the ignition switch(in cranking position). Therefore the starter

2007-12-11 07:32:34 · 7 answers · asked by Anonymous in Cars & Transportation Maintenance & Repairs

motor is fine. The car then starts. The ignition switch, battery, distributor and all wiring has been tested and works as per manuf. specs.
I dont understand why the starter motor doesnt turn when 12 V are going to the solenoid. when i bridge the wires it does.

PLEASE HELP !!!

2007-12-11 07:34:49 · update #1

7 answers

A simple and common misconception. Electricity does not give 2 rats asses about VOLTAGE. what is required is AMPERAGE just becaese your OHM/Volt tester shows 12V does not mean you are getting the proper amount of electricity through the solenoid. If you are getting 1/100th of an amp through the solenoid your tester will show 12V but 1/100th of an amp won't turn over a teeny tiny electric fan motor let alone an engine. Replace the starter solenoid as it is probably defective.

2007-12-11 07:52:06 · answer #1 · answered by Keith C 5 · 0 1

First if you have 12.37v from the Battery and 12.37v "At The GROUND! You've Got a Dead Short!"

QUESTION; Your Solenoid Has Two Large Lugs (Connectors), one on each side? "One Is Battery Positive, the Other is Connected with a "U" Bracket To the Starter?" There are Two Small Lugs on the Top of the Solenoid "One Should Should be Marked + (Positive) that is the Wire that comes From The Ignition, The Other - (Negative) Ground! With the Ignition "Off" there should be "No Power to "U" Bracket or Small Solenoid "Ground Wire"

Above is the Process for Hooking up the Starter Solenoid!

NOTE; You Wired it "WRONG" that's why it Doesn't Work unless you "Jump It!"

2007-12-12 06:23:19 · answer #2 · answered by sidecar0 6 · 0 0

Always remember, some parts are bad although they are new. Check with a local parts house to see if the specs to the solenoid is correct. Then get a new one. Also, you may want to check your ground on the starter. It may have a broken or damaged wire somewhere.

2007-12-11 15:42:14 · answer #3 · answered by Anonymous · 0 1

Try replacing the coil. It may not be sending the correct signals(or recieving). If that doesn't work, then my next bet would be the all fun wiring problems. Trace every wire with a wiring diagram and see if there is a loose connection or something like that.

2007-12-11 15:42:53 · answer #4 · answered by Anonymous · 0 1

Maybe you have a bad ignition switch. This switch has a mechanical part,(where your key goes in) and an electrical part (on the back of the switch). Sometimes this electrical connection goes bad or shakes loose from the mechanical part. Check it out

2007-12-11 16:25:01 · answer #5 · answered by Robert M 7 · 0 1

Either the ignition coils are bad and must be replaced or the starter motor is done and in need of replacing. Or, both.

2007-12-11 15:45:13 · answer #6 · answered by Mr. Len 5 · 0 1

sorry ur solinoid is bad if i read this rite

2007-12-11 18:30:16 · answer #7 · answered by oldschool69 4 · 1 0

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