Exception in rendering!

Message: window is not defined

ReferenceError: window is not defined
    at new c (/tmp/execjs20161208-83728-wk3ly4js:136:3912)
    at m.mountComponent (/tmp/execjs20161208-83728-wk3ly4js:47:15602)
    at /tmp/execjs20161208-83728-wk3ly4js:49:31860
    at a.r.perform (/tmp/execjs20161208-83728-wk3ly4js:47:12503)
    at Object.a [as renderToString] (/tmp/execjs20161208-83728-wk3ly4js:49:31821)
    at r (/tmp/execjs20161208-83728-wk3ly4js:50:21164)
    at Object.S.ReactOnRails.serverRenderReactComponent (/tmp/execjs20161208-83728-wk3ly4js:32:6073)
    at eval (eval at <anonymous> (/tmp/execjs20161208-83728-wk3ly4js:173:8), <anonymous>:10:23)
    at eval (eval at <anonymous> (/tmp/execjs20161208-83728-wk3ly4js:173:8), <anonymous>:17:3)
    at /tmp/execjs20161208-83728-wk3ly4js:173:8

Q: How Do the Three Types of Vehicle Ignition Systems Differ From Each Other?

asked by on

How do the three types of vehicle ignition systems differ from each other?

A: I&#39;m going to commit the unpardonable si...

I'm going to commit the unpardonable sin and "assume" that the three types of ignition systems being referred to are the points, coil pack, and coil-on-plug. There are actually four types of vehicle ignition systems.

Points-type ignition systems that were used on vehicles up through the early 1980’s are mechanical and can be adjusted. This system used a single ignition coil to spark all of the cylinders. The typical ignition tune-up required the replacement of the contact points, condenser, spark plugs, distributor cap, rotor, and possibly the spark plug wires. The points had to be adjusted for proper air gap when open to allow the ignition system to work as designed.

The first type of electronic ignition still used a distributor cap, rotor, and spark plug wires. This system replaced the contact points and condenser with a trigger wheel, called a reluctor, and an electronic pickup. A small ignition control module was used to control the spark timing.

Coil pack ignition systems are fully electronic and, as such, have no distributor, rotor, contact points, or condenser. This system uses a crankshaft position sensor and a camshaft position sensor. Coil pack ignitions have either two or three ignition coils mounted together in a single assembly. Spark plug wires are attached to the coil towers and are routed to their respective spark plug.

Coil-on-plug ignition systems are also fully electronic and, likewise, use a crankshaft position sensor and a camshaft position sensor. Coil-on-plug systems use a single ignition coil for each spark plug. This system does not use spark plug wires because the ignition coils sit directly on top of its respective spark plug.

Coil-on-plug ignition systems have a modified cousin. On vehicles that have two spark plugs per cylinder, you will have an ignition coil sitting on top of one plug while a second coil is mounted nearby and is connected to its spark plug with a short plug wire.

Whatever type of ignition system your car has, a professional technician can help you out with almost any spark related issue. They can also replace your spark plugs if necessary and at your own convenience.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Take key out car jeeps running sometimes. Then as oil and battery light want go off unless u take it slowly out

It seems as if your ignition switch is malfunctioning. Your ignition switch is the part that you stick your key into. This part is responsible for controlling different circuits based on the position of the key. It seems like the...

Q: Ignition lock cylinder

The only other way to get the ignition lock cylinder out you would have to drill it out. Then the lock insides can be removed so you can replace the lock cylinder. Make sure to not use over a 1/2...

Q: Car not starting after performance chip install

Hi, your car may be in anti-theft mode. The system may not recognize your key. The ani-theft mode and wiring may also be defective. In order to have this issue properly diagnosed, I would have a technician come and inspect your...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.