How many ohms should a spark plug have?
Serviceable Spark Plug Resistance To help assure reliable and trouble free operations, Tempest recommends replacing spark plugs in service having a resistance value of more than 5000 ohms (5k ohms) or less than 500 (0.5k ohms). For new plugs, we recommend 4000 ohms as the maximum acceptable value.
How does the electronic ignition control module work?
The electronic ignition control module is a solid state “On/Off” switch for the ignition system. The module receives a signal from a sensor inside the distributor. The signal is then used to fire the ignition coil creating the energy for the spark plugs.
How many wires does the ignition module have?
The ignition control module (ICM) has 4 wires coming out of it. Below are the descriptions of what each circuit does. Each circuit is identified by a letter, and this is the same letter that you will find on the ignition module’s connector.
How can you tell if an ignition control module is bad?
Rotate the distributor center shaft by hand or by cranking the engine. Observe the distributor rotor as the engine is being cranked over. If the distributor rotor fails to turn, then the distributor or distributor gears are bad. The multimeter should read voltage alternating between battery voltage and zero.
Which is the easiest GM ignition control module to test?
This is one of the easiest GM ignition control modules to test. This article will take you step by step through the whole process of diagnosing and troubleshooting a bad ignition control module and ignition coil.
What is secondary coil resistance of ignition module?
The secondary coil resistance is about 2200 to 3000 OHMs between the laminates and the spark plug connector. Now we have that information but lets look a bit deeper before we discard the module completely as bad. Because I have more time than money and in a lot of the instances it is a long way from the woods back to civilization sometimes.
Is there an easy ignition control module test?
It’s a very easy test, that doesn’t involve using any expensive diagnostic equipment (not even a scan tool!) and that I’ve used time and time again, over the years, with very accurate results. For your cross reference information, the ignition control module that this article covers are:
What causes an ignition control module to fail?
One of the most common failures with this type of ignition control module (ICM) is a misfire condition in which the ignition module doesn’t activate one of the Coil-On-Plug (COP) ignition coils. This condition is usually misdiagnosed as a bad ignition coil and the end result is money spent on parts that don’t solve the misfire issue.
Where to find parts for an ignition module?
Right: You can usually find parts (all kinds of parts) on flea bay by careful searching so as to test with out spending a arm and a leg. Some of the cheapo China clone ignition systems are only good (maybe) as a sub for testing, then try to find a OEM part.