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Automotive Technical Discussion Forum

Professional automotive forum for all types of vehicle repair discussion that does not fit into one of our more specific technical forums. Discussions include both OBD and OBD2, engine performance analysis, diagnostic best practices, service information, vehicle standards such as J1962, J1939, J2534, OBD2 modes (e.g. MODE$06), ignition and fuel system analysis, alternative propulsion (e.g. hybrid, electric, natural gas), and more. This forum is for experienced automotive repair professionals only, membership required.

Continue to the description of our next automotive discussion forum, the Technical Theory Forum.

Recent Automotive Discussions in the Automotive Technical Discussion Forum

Electric window problem
05/13/2021 in the Technical Discussion Forum
[Electrical: 11 Ford Fusion SE 3.0L] I have a Fusion where the passenger's window does not operate. Both rears and driver's window work correctly. I can make the window operate if I ground the two grounds (I believe they are brown/yel and blue/green). Th...
Jeep key logic
05/12/2021 in the Technical Discussion Forum
I'm trying to rectify a very intermittent no-crank condition on a '10 Jeep Liberty. When cranking occurs, the vehicle starts. The vehicle owner surfed the web and replaced the starter and solenoid wire, but the issue continued. I connected a scanner and c...
2007 chevy tahoe extra transfer wire
05/11/2021 in the Technical Discussion Forum
[PowerTrain: 07 Chevrolet Tahoe LTZ 5.3L] So the customer just came in with a vehicle that they are trying to get to pass the state emissions test, the problem is the check engine light, the vehicle keeps popping a u0102, No communication with the Transf...
08 GL 320 Brake Pedal Fades
05/11/2021 in the Technical Discussion Forum
[Brakes: 08 Mercedes-Benz GL320 CDI 3.0L] This one really has us baffled. Car came in because the brake pedal fades with steady pressure. No one has been working on it prior to this starting to happen. You push steady pressure on the pedal and it fades d...
New technology - Purge Pump?
05/07/2021 in the Technical Discussion Forum
An internet mailing list I frequent mentioned something about purge pumps being used on some of the newest GM vehicles, because there isn't enough purge volume with some of the engines to adequately vent the canister. I don't have access to service info (...

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