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Auto Repair Questions - Free Help - Expert Mechanics

Today's auto repair industry requires more electrical equipment, training and know how to diagnose car problems than ever before. Here on this website you will find free car and truck repair help, questions answered, advice, pictures and videos.

Have you had the experience of a mechanic replaced a part, did not fix the car, then guessed at another item. Maybe you read some free repair help online? When that did not repair the car, the usual response is:  "Well, gonna have to take it to the dealer".


We have been ASE Certified Dealership Technicians for over 20 years each.

The day to day job of auto repair has become more difficult. Our customers seem to understand that most car repairs cannot be done by the backyard mechanic anymore.

Find your vehicle make from the menu at the top of this page to browse our articles.

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Thank you to our friends at The Transmission Repair Shop - Dallas for their help on this website.

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How Things Work

How Does the Keyless Entry System Work?

The remote keyless entry system performs the following functions:

Locking the vehicle doors
Unlocking the vehicle doors
Opening the rear compartment lid

The keyless entry system is equipped with an alarm feature that performs the following functions:


Common Engine Codes

Intake Air Temperature Sensor (IAT) Code P0112 Or P0113

The intake air temperature (IAT) sensor is a thermistor which measures the temperature of the air entering the engine. The powertrain control module (PCM) applies 5 volts through a pull up resistor. When the intake air is cold, the sensor resistance is high and the PCM will monitor a high signal voltage on the IAT sensor signal circuit.