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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

promaster ball joints
05/11/2026 in the Technical Discussion Forum
[Chassis: 19 Ram ProMaster 3500 3.6L] Weve got a 2019 Promaster 3500 in the shop giving us a hard time. We replaced motor, and replaced one ball joint with aftermarket, sent for alignment, but ever since the vehicle does wierd things like pulling/hooking...
can timing chain / tensioner wear noise be intermittent?
05/09/2026 in the Technical Discussion Forum
[Engine: 04 Ford Excursion XLT 5.4L] This 5.4 has an intermittent tinny rattle from the front of the engine. The noise is loudest at the right side belt idler pulley mounting bolt. I originally thought it was the pulley, so replaced it and the noise was ...
Jeep stalls (very strange)
05/08/2026 in the Technical Discussion Forum
[Electrical: 04 Jeep Wrangler X 4.0L] Hi guys, Customer brought this to my shop for what he thought was a transmission problem But it wasn't so here goes it idle and runs fine until it moves forward i mean if you push it in neutral it die's now here is a...
Temp readings after engine work
05/07/2026 in the Technical Discussion Forum
[Engine: 90 Ford F-150 XLT Lariat 5.8L] Good Afternoon, A while back I replaced the timing cover, water pump, radiator hoses and thermostat on my truck. The cover was a notorious aftermarket brand, the pump was top line Napa. Since the job the temperatu...
Copper Crush Washers for brake systems
05/06/2026 in the Technical Discussion Forum
This has been discussed in many forums before. Poor quality copper crush washers are showing up in both new and remanufactured caliper kits and elsewhere. EVERY shop that does any brake work should have an appropriate assortment of good quality copper cru...

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