ENGINE CONTROL MODULE
Engine Control Module : The computer designed to run a computerized engine is often called an engine control module. This computer is a circuit board with lots of computer chips, transistors, resistors, capacitors, diodes and other circuits that solely are committed to run the engine circuits. By receiving several signals from multiple engine sensors like a throttle position sensor, mass air flow sensor, map sensor, barometric pressure sensor, engine coolant temperature sensor, air temperature sensor, oxygen sensor(s), air fuel ratio sensor(s), egr position sensor, fuel tank pressure sensor, camshaft position sensor, crankshaft position sensor, and or gas pedal position sensor the engine control module can determine output signals to run the engine. These output signals range from fuel injector(s), coil(s), solenoids, egr valve, and or the throttle valve. The inputs are received by the engine control module and the computer makes split second decisions to run the engine, adjust fuel mixture, adjust spark timing, adjust throttle position and or apply emission control devices.
Engine control modules are a computer running software to run a car, truck, van or suv. Most computers are reprogrammable. Often times, the manufacturer may come up with an update for a computer. When this occurs, the engine control module should be reprogrammed. If a engine control module is replaced, often times it must be programmed to the vehicle it is being installed into. If a engine control module is bad, reprogramming does not repair it, it must be replaced.
Diagnosing an engine control module requires a diagnostic scanner. Trouble codes may show up as a guide on where to start to correctly diagnose the problem. If and when the engine control module is bad, not always is there a trouble code to say it is bad, but process of elimination has to be performed to isolate the faulty computer module. There is no super machine, even at the dealership, that can test a vehicle and determine the engine control module is bad unless it has an internal failure or checksum code stored.
With this said, engine control modules can be very tricky to diagnose in some cases. Poor wiring, bad jumpstarts, driving with a bad tune-up for too long or no reason at all can cause an engine control module failure. It takes a very knowledgeable auto mechanic with years of electrical and engine experience to accurately pinpoint electronic control module problems and repair or replace the electronic control module properly. Guy’s Automotive has the right auto technicians to replace most electronic control modules. As a matter of a fact, some of the electronic control modules replaced at Guy’s Automotive can even be used modules even though the dealer makes them not usable for reuse. Guy’s Automotive has special equipment to allow many types of used modules to be reused against the wishes of the dealer saving the customers lots of money. Call Guy’s Automotive today and see if Guy’s Automotive can replace your engine control module today.