Electronic Engine Controls and Sensors
OEMPartsGarage.com is pleased to offer the complete line of AC Delco and Ford Motorcraft replacement parts to repair your vehicle's
Electronic Engine Controls and Sensors at WHOLESALE prices to you.
In our effort to offer you the finest replacement automotive parts and excellent customer service, we have attempted to briefly outline and define each electronic engine control and sensor function for you.
Electronic Engine Control System (EEC): The EEC microcomputer circuit accepts the input signals and produces output control signals to the fuel injectors to regulate fuel discharge to the injectors. It also adjusts ignition spark timing to provide the best balance between fuel economy, drivability and proper idle speed. All sequential fuel injection systems use the EEC system. The brain of the EEC system is a microprocessor called the Powertrain Control Module (PCM).
Powertrain Control Module (PCM): The powertrain control module controls various relays, solenoids and actuators which control many functions of your car's engine. The PCM accepts information from various engine sensors and computes the required fuel flow rate to maintain the correct amount of air to fuel ratio throughout the entire engine operation range optimizing fuel economy, emissions and your vehicle?s drivability. The calibration module is called PROM.
Throttle Position Sensor (TP): The throttle position sensor is a potentiometer which provides a signal to the Powertrain Control Module that is directly proportional to the throttle plate position. This signal is used by the PCM to adjust the air to fuel mixture, spark timing and EGR operation based on the engine load at idle, part throttle or full throttle. Note the throttle position sensor is not adjustable.
Mass Air Flow Sensor (MAF): The Mass Air Flow Sensor measures the amount of air entering the engine. The MAF signal is then used by the PCM to calculate the injector pulse width, which controls the air/fuel ratio of the engine.
Intake Air Temperature Sensor (IAT): The Intake Air Temperature Sensor monitors the air intake temperature and applies resistance changes in response to the intake air temperature. This provides a signal to the PCM, indicating the temperature of the incoming air charge.
Idle Air Control (IAC): The Idle Air Control valve controls the engine idle speed and dashpot functions. The valve allows the necessary amount of air, as determined by the PCM and controlled by the duty cycle signal, to bypass the throttle plate in order to maintain the proper idle speed.
Engine Coolant Temperature Sensor (ECT): The engine coolant temperature senses resistance changes in response to the engine coolant temperature. This provides a reference signal to the PCM, which indicates the engine coolant temperature.
Heated Oxygen Sensor (HO2S): The oxygen sensors supply the computer with signals that indicate a rich or lean condition during engine operation. This information assists the computer in determining the proper air/fuel ratio. The heated oxygen sensors are used on all models to allow the engine to reach the closed loop faster.
Camshaft Position Sensor (CMP): The camshaft position sensor provides the powertrain control module (PCM) with the camshaft position information to determine fuel synchronization. There are two; different types of CMP's- the two wire unit and the three wire unit. Refer to your specific vehicles service manual to determine which unit is needed.
Knock Sensor (KS): The knock sensor is used to detect engine detonation (spark knock). As a result of this information the PCM will retard spark timing.
Vehicle Speed Sensor (VSS): The vehicle speed sensor is a magnetic pick-up that sends a signal to the PCM. The sensor measures the rotation of the transmission and with this information the PCM determines the corresponding vehicle speed.
Crankshaft Positioning Sensor (CKP): The engine speed is an important input to the engine management system. The crankshaft speed and position are the basis for many calculations made by the computer. Crankshaft position values are transmitted to the computer by pickup coils also known as permanent magnet generators, Hall Effect sensors or optical sensors. In addition the EMS uses the crankcase position sensor in conjunction with the camshaft position sensor to calculate and perform misfire diagnostics.
We at the OEMPartsGarage.com sincerely hope that you found these brief definitions to be helpful in your search to purchase the correct original replacement parts from AC Delco and Ford Motorcraft .We are here to aid you in your effort to maintain your vehicle?s original performance characteristics.
We offer the complete AC Delco and Ford Motorcraft catalog of parts for the following vehicle manufacturers:
GM, BUICK, CADILLAC, CHEVROLET, CHEVROLET TRUCK, HUMMER, OLDSMOBILE, PONTIAC, and GMC Automobile or Truck.
FORD, FORD TRUCK, MERCURY and LINCOLN.
When you need to replace or repair any of your vehicles' Electronic Engine Controls and Sensors simply search your vehicle's YEAR, MAKE and MODEL to purchase the parts you need. Should you need customer service, please call 1-877-498-7278, Monday-Thursday 8:00 AM - 6:00 PM EST and Friday 8:00 AM-5:00 PM EST, and one of our customer sales representatives will be pleased to assist you.
Thank you for visiting the OEMPartsGarage.com website. We look forward to offering you original and replacement automotive parts in the future.
Please visit our other websites:
NEWGMParts.com: We are pleased to offer the entire GM catalog (404,000 parts) of factory new replacement parts and accessories for your GM vehicle or truck.
Coming Soon: DiscountChryslerParts.com: We are very excited to be able to offer the entire Chrysler catalog of factory new replacement parts and accessories for your Chrysler vehicle or truck
