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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

Engine swap - start/stop feature
10/12/2026 in the Technical Discussion Forum
[Engine: 13 Kia Soul + 2.0L] I think my daughter spun some bearings on her low-milage Kia Soul. Son in law should be able to replace the engine, and I'm inclined to advise him in that direction. I'm trying to help over the phone. Our stumbling block (lon...
Destroyed Lifter Roller NEXT TO Bent Pushrod & Lack of Oil
10/08/2026 in the Technical Discussion Forum
[Engine: 18 Cadillac Escalade ESV 6.2L] Greetings iATN, Vehicle mileage is 168,517. It arrived with an upper end tap accompanied by scuffing / chirping noises and some occasional thud / thump noises. I have no history with or for this vehicle. I have fou...
p0175 p0219b p0430
10/07/2026 in the Technical Discussion Forum
[Driveability: 20 Honda Pilot EX 3.5L] Cat was replaced 18000 ago for a p0430. Mil was off with permanent codes codes p0175 bank 2 rich ,p219b A/F ratio cyl balance and a P0430 cat bank 2. Installed new A/F and cleared the codes. Noticed that on test dr...
Corrosion repairs on aluminium heads
09/27/2026 in the Technical Discussion Forum
G'day iATN members. New cylinder heads for most cars are all over the internet these days, but years ago that wasn't the case, no internet back then. Consequently, many of us had to repair bad corrosion and cracks by tig welding. I was never overly concer...
2015 Chevrolet Tahoe P0333
09/24/2026 in the Technical Discussion Forum
[Driveability: 15 Chevrolet Tahoe LTZ 5.3L] Hello all! I've got a situation we are stumped on here. We put a new 5.3L long block in this 2015 Tahoe. It came in with a hard misfire, lack of power, bad misfire etc. Compression was in the 80's on a couple c...

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