Durango has a new ignition(switch&cylinder). Fired up on 1st time & several times after install(15-20 times). Drove next day (10 miles10 starts). now no start no crank .Working items(blower/int lights/headlights/clock on radio/brake light on dash/sec light/bell for lights on door open) Non working items( no lighter/no radio/no crank/no start/no dash actions?
I am guessing here but I would check the installation of your new cylinder and the fusebox. It sounds like the key is turning to the running/accessory position but not switching all of the accesories on. The tumbler can get loose inside the steering column and not engage the start switch.
Background... I had the same problem with 1st generation Dakota. The old key tumbler had to be turned much further than normal to engage the ignition. I paid "5 star" Dodge service to replace the unit and now it works as long as you turn the key back to "running" position after it starts. After the Dodge dealer told me that my truck was too old for them to be familiar they offered to dig around for MORE MONEY. Your problem reminds me that they said something inside the column wears out and they may not be able to fix. I was not impressed, but it reminds me to ask a mechanic if he intends to finish the job for which I am paying him. Mechanics aren't happy about this but it saves me money.
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time to stop messing with auto zone as the testing is not showing the fault
The battery could be again faulty as there is no guarantee of battery life so have it tested again with a load tester
Take the car to an auto electrician for a full charging circuit test which includes the alternator , voltage regulator and rectifier and wiring
what you are doing is spot testing and getting frustrated
the problem could be a faulty starter relay or ignition switch
If you have 100,000 miles or close to it you needed or would need a fuel pump anyway.Your mechanic sounds like a knowledgeable skilled honest one, he didn't even charge you for some items.
Stick with him/her as you both will get all the problems solved.
The work he has done is smart logical work so far.
Next time it does not start right away,keep cranking the engine to get the oil pressure up.If it starts when the oil pressure builds it may be you are not getting a prime cycle when you first turn on the key some times.
Sorry to say it sounds like you cooked the engine. It has a timing chain, not a timing belt. And it has direct ignition which means each cylinder has a coil on top of the spark plug. So no distributor. There is a good chance one of the head gaskets is blown or worse. It's possible the timing chain has jumped a few teeth and the crank-cam sensors are off line. I would probably run a compression test first and see if all 8 cylinders have a good level of compression. If they do, you might have a fuel or ignition problem. If one or more of the cylinders is low on compression, you have major engine problems. The cylinders should be within 25psi of each other and probably over 100 psi each.
First you must make sure you have power from the ignition switch to the ASD Relay. Using a test light, turn the ignition switch to the on position and see if you have power at the relay, if the test lights up when you turn the key on and turns off when you turn the ignition off then it is OK from the ignition switch to the relay. NEXT, you must have battery power to the relay at all times, if you do then that circuit is OK. NEXT: make certain you have a good ground on the body of the vehicle and the engine. Also make sure you have a good power too power connection at the junction where the power wires meet together. If all that is OK, then you'll need to know if the Engine Controller is seeing something it doesn't like. OR it's possible the CRANK SENSOR or something else may be bringing down the BUS CIRCUIT. Unplug one thing at a time and see if it starts. If it does after unplugging that sensor or part then that's what you must replace to fix it. Hope this helps and have an awesome day.
TRY CHANGING FUEL FILTER,COULD BE CLOGGED FUEL FILTER,FUEL PUMP FAILING,FUEL COULD BE CONTAMINATED WITH WATER.IF FUEL SYSTEM OKAY,CHECK FOR SPARK AT SPARK PLUGS,COULD BE FAULTY IGNITION MODULE OR FAULTY IDLE AIR CONTROL VALVE I WOULD HAVE VECHICLE CODE SCAN FIRST BEFORE SPENDING MONEY.