[shorod]

Welcome to the forum!

Code P0316 is not a cylinder #1 misfire code, it is a code for "Misfire occurred in the first 1000 Engine Revolutions." P0356 is the "Ignition Coil F Primary/Secondary Circuit Malfunction." Ignition Coil F I believe is coil number 6.

Code 2104 is not a misfire code, but rather "Throttle Actuator Control System - Forced idle." The P2107 code actually is "Throttle Actuator Control Motor Processor." code P2110 is "Throttle Actuator Control System - Forced Limited RPM" and code 2112 is "Throttle Actuator Control Ssytem - Stuck closed." These codes would typically indicate either a wiring issue or hardware issue with the Electronic Throttle Body. They could also be due to a damaged PCM.

However, if you were to search the forum for details on misfires for the 2003 and newer LS, you'd find others reporting that misfires can cause throttle body codes, likely due to ignition noise getting on the electronic throttle body wires.

So, I'd suggest you start by fixing the misfire codes and that will probably take care of the throttle body related codes as well. Additionally, there are things to look for when pulling the coils. While these common issues are not so common with the 2003 and newer models, you still need to check them. I'll let you use the very helpful "Search this forum" feature from the Lincoln LS forum main page to find out what items to look for.

Is the LS you're working on a V6 or V8?

-Rod