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".

THAT'S WHERE WE COME IN.

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

Cruise Control Function and Operation

Cruise control is a speed control system that maintains a desired vehicle speed under normal driving conditions at speeds above 40 km/h (25 mph). However, steep grades may cause variations in the selected speeds.

The main components of the cruise control system are:

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Common Engine Codes

Oxygen Sensor Code P0130 - P0141

The powertrain control module (PCM) supplies a bias voltage of about 450 mV between the heated oxygen sensor (HO2S) high signal circuit and the HO2S low reference circuit. When measured with a 10 mega ohm digital voltmeter, this may display as low as 350 mV. The oxygen sensor signal varies from about 800 mV when the exhaust is rich, to about 50 mV when the exhaust is lean.

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