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ignition system

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How to Troubleshoot a Car That Won't Turn Off
If your car won't turn off, inspect the power relay, idle speed, ignition timing, and spark plugs. Using premium fuel may help but isn't a solution.
How Long Does an Ignition Trigger Last?
In order to crank a car, there are elements of the electrical and the fuel system that have to work together. As the car key is turned over, the ignition coil will...
How to Install an Ignition Switch
When your ignition switch fails, it can cause a number of different issues. You may experience anything from a failure to start, to a stalling problem, to a series...
How to Unlock a Steering Wheel
When your steering wheel locks it is usually at the worst time. The good news is that it is an easy fix. The steering wheel locks for many...
How to Start a Diesel Truck
Starting a diesel engine is a lot different than starting a gas-powered engine. Whereas a gas engine starts when the fuel is ignited by the spark plug, diesel...
How to Remove, Install, and Adjust Ignition Timing
Ignition distributors help spark the gas and air in the engine. Worn distributors need to be removed to be cleaned to maintain proper ignition timing.
How to Test a Spark Plug Ignition Coil
An ignition coil is a vital component of today’s modern engine management system. Virtually all vehicles manufactured today use ignition coils to provide the spark for the engine’s spark plugs. An ignition...
What Does the Ignition Switch Warning Light Mean?
The ignition switch warning light could mean there's an issue with the ignition system or the car key. It could be due to a glitch or worn out key.
How to Start a Prius
The Toyota Prius was a game changer when it was first introduced back in 2000. As one of the first commercially successful hybrid vehicles, it eventually helped launch an...
How to Replace an Ignition Relay
Common signs of a damaged or broken ignition relay include a low/dead battery, the car stalling or not starting, or loss of power to the dash lights.
How to Replace the Electronic Spark Control Module
The car ignition has an electronic spark control module that fails when the Check Engine Light illuminates or if the engine does not start.
How to Replace an Ignition Lock Assembly
An ignition lock assembly can fail from constant use or broken keys inside the tumbler. To replace it, all you need are some tools and a new cylinder.
How to Replace an Electronic Ignition Pickup
The electronic ignition pickup is part of the ignition distributor. Signs of failure include intermittent misfiring or failure all at once.
How to Replace an Ignition Trigger
The ignition trigger fails if the engine is misfiring or has trouble starting. The check engine light may illuminate if the ignition trigger fails.
How to Replace an Ignition Lock Cylinder
The ignition lock cylinder is usually at fault if there is an issue with the ignition system. A common sign of failure is a car that won't start.
How to Replace an Ignition Ignitor
The ignition ignitor sends a signal to supply power and start the engine. A common sign of failure is a disruption in the engine's starting process.
How to Adjust Timing on a Car
A well timed ignition will allow the engine to run powerfully and efficiently. The timing needs adjustment when the engine runs too lean or too rich.
How to Replace a Ballast Resistor
The ignition coil cannot get proper voltage if the ballast resistor is broken. Signs are a crank without a start or a start and an immediate stall.
How to Replace Ignition Cables (Spark Plug Wires) in Your Car
The ignition cable, or spark plug wire, carries a signal from your vehicle’s computer to the spark plugs. This is crucial to the ignition system.

Related questions

Question
Spark plug wire
Hello, thank you for writing in. Spark plug wires are typically not universal, and you want to be careful using a separate set of plugs off of another vehicle. Not only are they designed to work with certain plugs, they...
Question
Car immobilizer issue or faulty ignition switch?
If the vehicle is getting power and the light are coming on the dash, then the immobilizer has the ignition system disabled. Check the fuel cut off switch (vehicle safety switch) and see if it has been tripped. If the...
Question
Engine won't start and there is no fire to the plugs.
After installing the steering column there may be some electrical wiring not hooked up or pinched. Check all the wiring on the steering column to the ignition system and see if the wires are not hooked up or pinched off....
Question
car not firing
Hi There, This may be related to many different possibilities that may be contributing to a lack of spark. Things like ignition coils, crankshaft position sensor, spark plugs, spark plug wires or ignition module are all components that help to...
Question
I have a brand new battery in my Peugeot 206 and it has only lasted 3 week. The battery is still fully charged but my car will not
If the starter motor is turning the engine over rapidly, at sufficient RPM, but the engine does not catch and run, that means that there is an ignition, fuel, air induction, or mechanical fault in the engine that will have...
Question
Cranks but won't start
Be sure there is adequate fuel in the fuel tank and that the fuel is not old. Check for adequate fuel pressure, injector operation, and a spark at the spark plugs. Basically, if the starter motor is turning the engine...
Question
My car won't start from the ignition but It started from the starter.
The ignition wiring from the ignition switch to the starter is either loose or burned. Check the starter ignition small wire and see if there is a voltage present when the ignition switch is turned to start position. If there...
Question
No crank, No start, Lights bright, No interior accessories.
The problem sounds like you have a problem with the ignition switch since everything that only works with switch on does not have power. Check the ignition switch and connector and replace the switch and connector if needed after inspected....
Question
Key won't turn in the ignition switch.
Hi there. If the key can go into the ignition switch and turn then the key is the right one. If the switch is not turning all the way, then the switch is damaged and needs replaced with the key...
Question
The ignition fuse keeps on blowing.
Hi there. If the fuse is blowing immediately when you turn the ignition key, then it is a sign of a short in the ignition system. The short could have been caused a loose or frayed wire that is going...
Question
Ok my car will not start it had the same issue a week ago I changed the cam and crank sensors. It cranks but wont start ...HELP!
Prior to performing diagnostics be sure you have a fully charged battery that passes a load test. Then, confirm that the engine immobilizer system (security system) is not activated thus preventing the car from starting. To temporarily override the immobilizer...
Question
What would cause the car to want to start on its own with no key in the ignition?
The wires for the battery terminal on the ignition switch is swapped with the starting terminal on the ignition switch and is causing your starter to engage. This would not be caused by the original wiring only if it was...
Question
Key stuck in the ignition.
To remove the key from the ignition switch, try turning the steering wheel left and right as you turn the ignition switch. Make sure that the vehicle is in park to make the interlock solenoid unlock the ignition switch lock....
Question
My key won't come out of ignition for my 2007 Chevrolet impala.
Try turning the steering wheel hard from the left to the right and wiggle the key around a little bit. If the key is still stuck, then you will need to remove the plastic molding around the steering column to...
Question
No spark after head gasket replaced and timing and water pump fixed
Check all the ignition system primary circuit electrical connections to the distributor and test the coil and the distributor. Be sure all electrical connections were restored and are secure. It is possible that an electrical connector was just left disconnected,...
Question
My 2001 ford F350 triton V10's engine began cranking in the middle of the night.
The issue is with your ignition switch. The switch is turning on the starting circuit to the starter and not disengaging the circuit unless you turn off the key. I recommend replacing the ignition switch. If you need further assistance...
Question
No spark to cylinder 3&2, but i do get a spark to 1&4
I would first look at the cap and rotor to see if there are any type of wear spots on either of them. That would be my first thoughts. If those are looking good, I would next take a look...
Question
No spark?
Hello. To help find out why the vehicle is not getting spark you will be at the test the signal being sent to the coil pack as well as test crankshaft position sensor. The crankshaft position sensor should have been...
Question
I got a diagnosis for a 2012 X6 saying the combustion misfires due to faulty ignition coil and I've gotten a recommendation to rep
Hello, and thank you for writing in. Getting a second opinion is always a good idea. Replacing the spark plugs is a very necessary part of maintenance that is often overlooked. It is never a bad idea to replace your...
Question
Cuts out while driving
Any time a vehicle cuts out while driving then it will have set failure codes in the computer. If you have the codes then please supply them the next time you have problems. This helps us to come up with...

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