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Automotive PCM pull-up and pull-down circuit diagrams showing open and grounded sensor voltage readings

Automotive Pull-Up and Pull-Down Circuits Explained

An automotive pull-up circuit uses a resistor to hold a module input near a known voltage when no sensor, switch or transistor...

How To Replace a Ford Fiesta MAF

Variable valve timing is nothing new to the world of performance automobiles, but the Ford EcoBoost may be transforming small displacement engines all together....
Honda performance sedan and Nissan Z connected to a shared central computer, zone ECUs and vehicle-software architecture planned for 2029.

Honda and Nissan Will Share ECUs and Vehicle Software Starting in 2029

Honda and Nissan will jointly develop central computers, zone ECUs, operating systems and vehicle-control software for next-generation cars.

Nissan Altima OBDI ECU Pinouts

Today we'll be taking a look at the ECU pinouts for a 1993-1995 Nissan Altima, the OBDI version of course. This car came with...

How To Test a Ford Mustang Mass Airflow Sensor

The MAF sensor in your Ford is otherwise known as the Mustang Mass Airflow Sensor. The MAF is responsible for reading the airflow entering your...

How To Replace a Ford Flex Oxygen Sensor

Over time your Ford Flex Oxygen Sensor can become fouled or simply fail all together. When this occurs your Ford Powertrain Control Module won't be...

How To Compression Test your Engine

If your car or truck has been running poorly and doesn't seem quite as peppy as it once did, it may be a good idea...

How To Install a Honda Civic Air Fuel Gauge

If you need to modify your Honda Civic by installing a power adder like a turbocharger, knowing how to install a Honda Civic air...