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Maybe a crack in the ceramic at the top of the coil causing momentary flash over to the engine block. I had that once.


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The gauges in the dash are actuated by motors. When you turn the vehicle on, they do their "power on self test" and start doing their thing getting the gauges set correctly. If one of them is having an issue, you could be hearing the scratching noise because of this. I had an '04 Suburban which had the speedo go bad and this is exactly what it sounds like. ...


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Check the start relay. I've seen other f-series owners complaining about this exact issue on this forum.


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AKA Trembler Coil The trembler coil was a device called a Ruhmkorff or induction coil, widely used in the 19th century.[3] It combines two magnetic devices on the same iron-cored solenoid. The first is a transformer, used to transform low voltage electricity to a high voltage, suitable for an engine's spark plug. Two coils of wire are wound around an ...


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You should have 2 coil packs on the back side of the engine near the throttle body. Wires run to individual cylinders. I don't know how easy it would be to find locally but you can use an inductance spark tester. http://www.amazon.com/Lisle-19380-Spark-Tester/dp/B0002STS3U Another way to see if the coil pack is firing would be to pull a wire out and ...


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spark plug wires should last a very long time, so just check them when you get the plugs done, and replace if they're worn out. wires don't really wear with distance, it's time and heat cycles that cause the insulation to eventually degrade. usually there good for several years look for cracking of insulation, particularly at joints. check for corrosion of ...


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Yes you can turn the crankshaft via its pulley. But this is probably easier. If you want to turn the crankshaft by hand you can use a socket with a long handle / breaker bar on it to "Tighten" the bolt on the end of the engine crankshaft. Usually that bolt holds the harmonic dampener. Be careful here as if the crankshaft gets stiff you might exceed install ...


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The only place where I'd expect such a wire is the one between the ignition lock and the starter relay (i.e. the one that tells the starter to crank). Do they expect you to splice your starter button into this lead?


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Goto the dealership If you goto the dealership for the manufacturer of your car you can bring some things with you to get a key, possibly. Drivers license, passport VIN Number of your vehicle Title of the car - with your name on it. The dealership can cut you key. IF your key needs to be programmed into your cars system you will need to get an ...


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Yes, there is an interlock between the ignition and the shifter, as well as an interlock between the shifter and the brake pedal. Something could have gotten messed up somewhere. There is a procedure to move the shifter, if stepping on the brake and the key system don't allow it. Check your owners guide. Generally there is a small removable plastic cover ...


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The two could be related. In the US, the key can't be removed from the ignition unless the car is in Park as a safety requirement and most cars won't let you take it out of park until the key is inserted and turned. This is normally accomplished with a few switches and actuators in the ignition cylinder and the shift mechanism. This could be as simple as ...


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As it's a security-specific component on a relatively new high-end car, I suspect you won't be able to use a second-hand part - You will probably have to get a new one from Mercedes. Even if you could use a second-hand one, you'll almost certainly have to take it to Mercedes to get them to reprogram it to your car.


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The picture in your comment suggests the following course of action: The bolted type of battery terminal shown can cause this symptom and still look OK. Test it with a voltmeter. Put one probe on the lead of the battery and the other on the copper of the cable and then read the meter while trying to crank the engine. Do this for both connections. If the ...


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This problem is usually indicative of a bad connection at the battery (or one of the battery cables). It almost behaves like a resettable fuse. When there is a connection, the lights work because the connection is good enough to allow the little amount of power needed to power these devices. Then, when you try to start, the connection breaks because there is ...


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Honda Coil Over Plug setups have three wires. As mentioned they have an internal Ignition Control Module. Pins 1 & 2 are power and ground while pin 3 is the control signal from the Electronic Control Module. You can test coil resistance with a multimeter. How to Test an Ignition Coil with a Multimeter You can also check the primary coil with a digital ...


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Starter Solenoid If you can turn the starter over when your skip the solenoid then I the logical next step would be to replace your solenoid. It's a very simple procedure and the solenoid is a relatively inexpensive component I suggest you swap out your solenoid and see if that resolves your issue.


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If you are looking for a method by which you can diagnose the problem to confirm your suspicions that one of your keys has failed I can suggest the following. In close proximity to the ignition barrel, literally around the outer radius, is an RFID reader. When you place the key in the ignition, this energies and attempts to rear the transponder code from ...



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