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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

More Engine Oil-Alphabet, Numbers, and Symbols Soup-Anyone?
03/01/2024 in the Technical Discussion Forum
More Engine Oil . . . Alphabet, Numbers, and Symbols Soup . . . Anyone? Kevin McCartney has provided some of the most valuable information regarding fluid specifications that anyone could ask for. I mentioned in a recent thread that Kevin is opening up ou...
Toyota reman axle program
02/26/2024 in the Technical Discussion Forum
[PowerTrain: 09 Toyota Sienna XLE 3.5L] Greetings iATN, The vehicle listed here is prompting this post; however, the question applies more generally. Please: What is your take on Toyota's reman CV-axle program? Is it great or unreliable or somewhere in b...
05 silverado can't program ecm error codeE4399
02/26/2024 in the Technical Discussion Forum
2005 silverado 5.3 t engine, reman ecm and original ecm can read codes, can see data on old ecm. When I try and connect gm sps I get an error code E4399 tried 3 different usb wires and a different pass through box same on both boxes and 3 wires. Now I do ...
Understanding The Soup
02/26/2024 in the Technical Discussion Forum
ACEA is an international consortium of automobile manufacturers. Among other things they establish standards and ratings for engine oil. The ratings appear to be a bunch of alphabet soup. Over the years I've addressed these rating numerous times but they ...
trouble codes
02/23/2024 in the Technical Discussion Forum
[Driveability: 06 Pontiac G6 GT 3.5L] did a full scan on Autel scanner for codes- P0451 Fuel Pressure Sensor. OK - then did a OBD2 scan and got P0451 - Evap vent solenoid. Which do I troubleshoot first? Never seen that before !!!

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