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International Automotive Technicians Network

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

intermittent no start & failure to recognize key(s)
11/11/2026 in the Technical Discussion Forum
[Electrical: 21 Chevrolet Tahoe Premier 5.3L] Greetings iATN, this is a two-part question, part one being specific to the vehicle and its symptoms, and part two concerning what professionalism looks like in comparable situations. 1. This vehicle was towe...
Wheel and hub center size importance
11/10/2026 in the Technical Discussion Forum
Just a general question. It seems that most vehicles as far as I have noticed have hub and wheel centers sized to match each other. I presume that the hub and wheel center carries the load and the studs hold the wheel against the hub face. However, I reca...
2001 Volvo S80 Crank, No Start
11/09/2026 in the Technical Discussion Forum
[Electrical: 01 Volvo S80 2.9 2.9L] Looking for some help from you European guys. I got a 2001 Volvo S80 that cranks, but will not start. Other than being old, the car is in immaculate condition. I checked the codes and there was a code in it for a cam s...
Camry 2.5 timing gear question
11/05/2026 in the Technical Discussion Forum
[Engine: 11 Toyota Camry 2.5L] Please explain the purpose of having the intake cam gear unlocked when the bolt is torqued? What would be different if the gear was locked when the bolt is torqued? I just did a 2013 with the gear unlocked and it worked fin...
ADAS
11/05/2026 in the Technical Discussion Forum
[Electrical: 20 Honda Odyssey Touring 3.5L] We are getting 19 codes from our ADAS cameras and blind spot systems. This is the second time this week we've been unable to fix a car which is in our "wheel house" of cars we work on and fix. Has anyone else g...

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