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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....
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...
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
Getting fuel, spark, compression, air still no start
Hello, thank you for writing in. Considering you have taken on a lot of the main components all at once, you should take a moment to go back through the entire project thus far to make sure everything was done...
Question
1990 Ford F-150 4x4 truck was started then died went back to start it again an got no dash lights an truck does nothing
If you lost all electrical power then you may have a problem with ignition switch or the charging system failed. If you can get a jump start and it starts and runs then check charging system. If jumping it does...
Question
'72 Mach 1 with 351C. Runs, idles, revs in park. Sputters, chugs and coughs in Drive. Any suggestions?
Check for proper advance of ignition timing. In particular, verify that advance curve you observe matches factory spec. Measure fuel pump output/pressure against factory spec. If engine compression is good and balanced, apart from timing check and fuel pressure check,...
Question
I changed my spark plugs and ignition coils and now my car wont start it just clicks i have a 2002 jaguar s type v6 3.0
Hello, thank you for writing in. There are several issues that may have occurred. The first step is to make sure the ignition wires are installed correctly, and that you did not mix up the firing order. You can do...
Question
Can I use the ignition switch from a 1992 GMC pickup fora 1973 camaro
No. They have a different connector pin layout and connector.
Question
My key always get stuck in the ignition and now my car won't start.
It could be that you have a faulty ignition switch. According to a the GM recall website, your car was one of the cars recalled because of a faulty ignition switch. Before you take any other measures, call your dealer...
Question
Why aren't my sparkplugs sparking?
Hello, thank you for writing in. The first two components to look at are the distributor and the coil. If you have a spark tester, test light, or voltmeter, you can measure the power supply along the circuit and find...
Question
Does putting my car into accessory mode count as a key cycle on a scanner?
You have to turn it to on all the way to count as a key on cycle and then back to off for one key cycle.
Question
1999 Ford Ranger 2.5L. #3 and #4 cylinders are not firing, #2 sometimes doesn't fire.
You should first check the fuel pressure is within specification. Then check plugs are getting fire and then do a compression test on all 4 cylinders. If all this is normal then remove injectors to look for clogged injector inlet...
Question
If I disconnect my ignition switch from the steering column can I still start my car with a screw driver turning the switch?
You did not give us the vehicle year, make and model of your vehicle. However most vehicles without a factory theft system you should be able to remove the ignition switch and use a screwdriver to turn it to start...
Question
Replacing ignition switch: How do I replace the ignition switch without the original key?
The only way to get out the ignition lock is to use a 3/4 inch drill through the center of the key hole and then dig out the debris and then you can put a screw driver in and turn...
Question
I am unable to pop the old ignition switch out like i saw on youtube. I am using my phillipshead screwdriver but it is of no use
You will need to put key in and then turn to the on position. This is position just before you turn to start the truck and then you can push in the pin using a thin screw driver or punch...
Question
I just recently had my ignition switch changed on my 2006 Pontiac Grand Prix now the car won't start and it triggered the anti the
Any time part of the ignition system or keys have been replaced on a vehicle that has a theft system installed from the factory will require reprograming the new keys to the vehicles theft system.
Question
My ignition is broken and theft system is causing it not to go in gear
You will need to have the damage to the shift mechanism checked to see what is damaged and have a mechanic like one from YourMechanic check and repair it for you.
Question
98 mazda b2500 steering wheel was locked. I turned key and wheel and it came loose. now truck don't do anything. battery is fine.
You're not imagining it. The ignition switch is made up of two parts, the lock assembly which handles the job of locking the steering column, and the switch element which does the electrical work. The switch element is made of...
Question
1991 Ford F-250 needs ignition switch reinstalled
Sounds like someone bypassed the factory ignition switch circuit. This indicates there was a problem with the circuit to begin with. The lock cylinder would need to be physically relocated to the steering column. Then, the ignition switch circuit would...
Question
I drove my car, the car wouldnt turn off, and then when I got it to turn off it won't turn on. The dashboard lights come on but wo
It would most likely be caused by a bad ignition key cylinder or ignition switch. If you could not turn key to off then the lock cylinder may be binding or the ignition switch is bad.
Question
Q: Ignition
You will need to remove ignition switch to move position of key slot to get ignition back in.
Question
My car starts up , but the lights on the inside doesn’t want to turn on ,dash lights won’t turn on , not anything would move
The problem of not getting any of the instruments to come on when it starts then you will need to have the ignition switch checked to see if it is sticking or not sending power to cluster.
Question
How do I find the ignition switch
I would need to know the model of your 2002 BMW to know where the ignition switch is on your vehicle. If the vehicle has a key start on steering column then the switch is on other side of column...

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