How to Test the TPS Sensor on the 1990 Ford F-150?

Answer The TPS (Throttle Position Sensor) in your 1990 Ford F-150 is a type of variable resistor called a potentiometer, used by the on-board computer to determine the amount the throttle is open. A 5-vol... Read More »

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How to Test the TP Sensor on a 1990 GMC Sierra?

The throttle position sensor on the 1990 GMC Sierra has a three-wire connector. The left wire is the throttle position signal wire, and is dark blue. The middle gray one is the powertrain control m... Read More »

How to Test the Crank Sensor on a 1990 Silverado?

The 1990 Silverado does not have a crank sensor behind the balancer. It hadn't been developed for Chevy trucks yet. All the engine options, the 4.3-, 5.0-, 5.7- and the 7.4-liter engines, use the s... Read More »

How to Test a Mass Air Flow Sensor on a 1990 Mazda MPV?

The mass airflow sensor, or MAF for short, is part of the computerized operating system of an engine. The sensor is located between the throttle body and the airbox. A six wire removable connecto... Read More »

How to Test a Mass Airflow Sensor on a 1990 Dodge Caravan?

As a fuel-injected automobile, the 1990 Dodge Caravan uses a mass airflow sensor in order to control the explosions in the combustion chamber. The sensor works by monitoring how much air is passing... Read More »