How does the GM distributor mounted ignition module work?
OK, once the fuel injection computer receives the Distributor Reference Hi Signal, it starts activating the fuel injectors and above 400 RPM, starts to send a 5 Volt Bypass Signal to the ignition control module. It’s with the Bypass Signal that the computer starts to retard and advance ignition timing with the IC Signal.
What are the symptoms of a bad ignition module?
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. The check engine light is on. Lack of power.
How does the engine control unit control the injector pulse?
Question: What controls the fuel injector pulse? Ans: The engine control unit is the electronic brain that used to control the fuel injector pulse by gathering data from various sensors along the fuel line
How does fuel injection computer control ignition timing?
It’s with the Bypass Signal that the computer starts to retard and advance ignition timing with the IC Signal. So, then above 400 RPM (any RPM above this and the ECM considers the engine as having started) the fuel injection computer starts to control the ignition timing.
OK, once the fuel injection computer receives the Distributor Reference Hi Signal, it starts activating the fuel injectors and above 400 RPM, starts to send a 5 Volt Bypass Signal to the ignition control module. It’s with the Bypass Signal that the computer starts to retard and advance ignition timing with the IC Signal.
Can a GMC S15 ignition control module be defective?
This means that if your 2.8L equipped S10 (GMC S15) has spark and you can see the two throttle body fuel injectors injecting fuel, then the ignition control module (ICM) is OK and not defective. What Tools Do I Need To Test The ICM?
What are the inputs to the fuel injection system?
The inputs are: O2 Exhaust Gas Oxygen Content Sensor, ECT Engine Coolant Temperature Sensor, MAP Manifold Absolute Pressure Sensor, TPS Throttle Position Sensor, Vss Vehicle Speed Sensor (not always used), and the Knock Sensor whose signal is conditioned by the ESC Electronic Spark Control Module before reaching the ECM.
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. The check engine light is on. Lack of power.