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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

Any recommendations for a GDI injector cleaning company?
02/15/2026 in the Technical Discussion Forum
I've sent port injectors out for cleaning but none of those places have the high pressure testing equipment direct injectors need. Any suggestions for places you have used?
Intake Manifold Runner Actuator
02/12/2026 in the Technical Discussion Forum
[Driveability: 06 Ford Expedition XLT 5.4L] I am replacing the Intake Manifold Runner Actuator due to a P2006 DTC with a Standard IMA107. Problem is the arm which the linkage attaches to is clocked so that it covers the bottom mounting hole. Since it is ...
Ram Hemi exhaust bolts
02/12/2026 in the Technical Discussion Forum
Does anyone know a source for durable exhaust manifold bolts for the 5.7 Hemi. A friend of mine has had repeat failures with OEM and Dorman bolts.
1d3hb18t39s757792
02/09/2026 in the Technical Discussion Forum
[Electrical: 09 Dodge Ram 1500 Sport 5.7L] Hello all, looking for some info, Chrysler charging system, Ram 1500, no charging, no signal from PCM to turn the alternator on. I remember back in the day, they had an issue, and I thought somebody made a kit f...
oil cooler housing
02/09/2026 in the Technical Discussion Forum
[Engine: 17 Jeep Grand Cherokee Limited 3.6L] The oil cooler is leaking oil. OE is plastic There is an aftermarket make of aluminum. Anybody have experience using the aftermarket? It sounds like it should be better, but I am hesitant using anything with...

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