In the last Diagnostics episode, we outlined the vital information provided by compression and leakdown testing and illustrated how to use these most important tools. These tests reveal the internal ...

In the Last diagnostics article, we outlined how to retrieve and decipher engine diagnostics for engines running OBD-I engine management computers. OBD or On Board Diagnostics is a subsystem of the ...

Your vehicle has a problem if the check engine light (CEL) glows. Diagnostic trouble codes (DTCs) stored in the computer help find the cause.

For all its '81 vehicles, GM introduced a computer-controlled engine-management system named Computer Command Control. It became known as CCC or C-3. The engine controller—first called an engine ...

We've all been there: you're driving along, minding your own business, when all of a sudden your check engine light comes on or you begin to hear a mysterious rattle that you can't quite identify. At ...

Q:Hello, I am a longtime Corvette enthusiast and have owned many Corvette models. Unfortunately, I have never been in the financial position to purchase a new model and usually buy cars between 10 and ...

PeopleNet, a Trimble company and provider of fleet mobility technology, announced that it is providing Navistar International Corporation engine diagnostic telematic information as part of an ...

Code P0720 is one of the OBD codes that is activated when the Powertrain Control Module (PCM) detects erratic or insufficient input from the output shaft sensor (OSS). Such a code generally indicates ...

Check engine lights are sometimes accompanied by noises, smells, and vibrations that can help diagnose the underlying issue. But sometimes, that annoying little light comes on with no other indication ...

Caterpillar’s Pocket Technician software lets you check 22 engine-status and 23 configuration parameters (and change 11 of them) with a relatively inexpensive handheld computer running the Palm ...