Do you remove ignition control module from distributor?
IMPORTANT: All of the tests are ON CAR TESTS, do not remove the ignition control module (ICM) from the distributor (all of the figures show the ignition control module off of the distributor but this is just for illustration purposes only). In the above figure you’ll notice that the ignition control module (ICM) has three connectors.
When does an ignition module need to be replaced?
If the light blinks, the module is good. If the light is blank or constant, the module is bad. Before you attempt to replace the control module, you must rule out other ignition system components. The module is expensive and replacing it is a laborious process. Check the ignition coil for a spark.
Can a bad distributor cap cause a misfire?
The throttle body fuel injectors do not spray gasoline. The following are usually the most common symptoms of a bad spark plug wires, or a bad distributor cap and rotor on this type of GM distributor mounted ignition control module: The car (or truck, or mini-van, or van) starts and runs, but with a misfire.
Why is my GM ignition module not working?
From the results you get, you’ll be able to pinpoint the problem to the ignition control module or the ignition coil or the pick up coil or completely eliminate these as the cause of the no start condition.
How to replace Ignition Control Module on LT1 Firebird?
This video shows how to replace the Ignition Control Module on a 4th Generation Firebird Trans-Am equipped with LT1 Engine. These steps are similar for all other 4th generation Firebirds and Camaros as long as they are equipped with an LT1 Engine. Loading…
How does the distributor mounted ignition module work?
In a nutshell, when you crank up the engine (and the system is working properly): The distributor shaft starts to rotate, inducing the pick up coil to start generating its magnetic signal. This pick up coil signal is sent directly to the ignition control module.
The throttle body fuel injectors do not spray gasoline. The following are usually the most common symptoms of a bad spark plug wires, or a bad distributor cap and rotor on this type of GM distributor mounted ignition control module: The car (or truck, or mini-van, or van) starts and runs, but with a misfire.
If the light blinks, the module is good. If the light is blank or constant, the module is bad. Before you attempt to replace the control module, you must rule out other ignition system components. The module is expensive and replacing it is a laborious process. Check the ignition coil for a spark.