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Cars & Trucks Master
Re: When the key is turned to start up, and you just have...
Sounds like your battery may have drained over night. If you left your lights on, or your dome light malfunctioned & stayed on etc. You can try putting a battery charger on it, or if you have the tools and a friend, you can take your battery out and take it to OReilly's and they will charge and check your car battery for free. http://www.oreillyauto.com/site/c/StoreServices.oap Store Services Reilly Auto Parts Reilly Auto Parts
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Check for OBD2 codes, primarily a code indicating PCM memory is corrupt. My Trailblazer at times wouldn't turn over and start. Nothing at the key. When you attempt to start the vehicle and you turn the key to the start position, the PCM sends a signal to the starter relay to start the engine. Youtube video showed a mechanic warming the PCM with a hair dryer, and it would start. Tried it on mine and it started fine. If it is the PCM, the remedy is PCM replacement. Got mine from pcmforless.com about $100.00. They had to program the new PCM with the vehicle vin number. Once installed no more problems.
There should be a starter relay under the hood in the fuse box, get someone to bump the key and listen for it to close the circuit. the description should say PCM/ECM/STARTER something along those lines. If it doesn't click you may want to swap it for another in the fuse panel and retry. Be sure to check the fuse for the start circuit. The starter circuit is control by a module so there is no direct wire from the ignition switch straight to the starter. If you hear it click then you may want to use a test light and check for voltage at the starter (small wire on solenoid) while someone else bumps the key.
This sounds like the anti theft system is active, you jump start it but it dies out after a few seconds , if this is correct then try another key. the other thing can be a weak battery make sure the battery is fully charged and good,
Starter solenoid. It's the switching mechanism on the starter that engages the starter when you turn the key. To test you would need to make sure you're getting power from the ignition wire at the starter when the key is turned(The small wire, not the big one). If it does get power, the solenoid is bad and the starter needs to be changed. If it does not, then it's something between the key and the starter like the starter relay in the fuse box under the hood
Your tumblers are worn. You can "Bump" the lock to get it to work, but this is a very temporary fix. To bump the lock, simply tap on the end of the key with something heavy like a short 2X4 , the heal of a shoe or something similar - while in the ignition while attempting to turn the key to the start position. DO NOT turn the engine back of until you get the car home or to a repair facility.
Possibly the alarm cut-off switch? or Ignition key switch (or wires) going bad?
But you mentioned you tried to jump start it and it did turn over?
IF so, you could have severe corrosion or loose connections of the battery cable both at the battery and at the termination points, such as ground and starter motor.
Check that the battery wires are tight and clean at the battery posts and at the other end.
Again the No lights suggests either the alarm cut-off, or an absolute disconnected battery cable.
Finally, it could be ignition fuse, Check fuses. Ignition key switch.
What makes this hard is that you suggest it would turn over with another battery connected. This makes no sense.
The ignition key and lock cylinder operate a gear and lever type of mechanism within the steering column. If the gear jumps out by one tooth, or has been assembled incorrectly, it will cause the steering wheel to remain locked and the push rod that activates the ignition switch (located near the bottom of the column) will not function correctly. This can be very tricky to solve, and should be serviced by an experienced technician.
Have never heard of the pin shearing from a little bump chrysler double sided ignition cylinders usally start haveing problems at about 100,000 miles or so earlier if you have a bulky have key ring i would suggest spraying the inside of the cylinder with spray lubricant wd-40 I like tri flow little more exspensive but worth the money last a lot longer the run the key in and out very rapidly a few time let it sit a moment and the take pressure off wheel and try and turn the key