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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

A/C not Cooling
07/01/2022 in the Technical Discussion Forum
The A/C on this vehicle will not cool. It uses R1234YF refrigerant. The compressor clutch engages both high & low side pressures are 95 PSI. I have changed the expansion valve, no change in operation. There is a solenoid on the compressor, can\'t fin...
GM truck AFM delete
06/30/2022 in the Technical Discussion Forum
[Driveability: 08 GMC Sierra 1500 SLT 5.3L] This is my brother in law's truck. Another shop put a non AFM engine in it, now it has no power. Injectors 1 and 7, 4 and 6 are not pulsing. The other shop told him it should run fine without the PCM reflash. I...
timing gear
06/29/2022 in the Technical Discussion Forum
[Engine: 13 Nissan Juke S 1.6L] i put a timing chain in a juke this week, ordered everything from the dealer, they sent me a new exhaust cam gear but not one for the inttake cam. i called and asked why, parts guy said he asked one of there techs what all...
Looking for a british car repair shop-LA,Cal
06/29/2022 in the Technical Discussion Forum
Hello All,Can anyone in the Los Angeles,California area recommend a shop that can change a clutch in my son's 1959 Austin Healy sprite?He's new to the area and does his own minor repairs but this is above his abilities.Thanks very much.
What the Hell is Happening?
06/29/2022 in the Technical Discussion Forum
[Engine: 05 Ford Escape XLS 2.3L] Sorry in advance for the length of this post but, I want to be clear on the saga. We took on a customer with a 2005 escape 2.3 duratec engine. Came in with a no start no run condition. 150000 miles. We checked and it had...

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