Automotive Repair and Maintenance How-To

Learn about some basic automotive checks and maintenance you can do on your car or truck, yourself before having to take it to an auto repair shop. These things will save you time and money. Poor maintenance is one of the main things that cause automotive failures. Most people do not take the time to do some of these very simple, yet important procedures. This list is always being added to, so check back with us again.

In order to scan your car for codes, you must first locate the diagnostic connector. It will be under the drivers side dash. Here is an example of its location. Your vehicle may be in a little different spot. If you do not have a code reader tool, many of the large national parts store chains will scan your cars computer for free.

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Use a small screw driver or even a dime. Look for a small indent in the bottom of the remote between the two halves. Some remotes have this indent, others do not. Use the screw driver to pry the top and bottom apart.

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This is a pictures of plug and ignition coil with 75,000 miles on it that misfiring normally. No large deposits, not discolored. Reddish or green deposits indicate burning coolant. Black, sooty deposits indicate burning oil.Also check for hairline cracks in the white porcelain insulator.

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How Things Work

Windshield Wiper System Operation

The windshield wiper motor module is part of the windshield wiper motor cover and controls wiper motor operation. The accessory voltage supply circuit to the windshield wiper motor assembly is used to operate the wiper motor in all modes. The windshield wiper motor is a 2 speed motor and is operated at low speed in all modes except HIGH.

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Common Engine Codes

EGR Codes P0400 - P0405

P0400-P0405
The powertrain control module (PCM) tests the exhaust gas recirculation (EGR) system during deceleration by momentarily commanding the EGR valve to open while monitoring the manifold absolute pressure (MAP) sensor signal. When the EGR valve is opened, the PCM should see a proportional increase in MAP.

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