Shakes and sluggish

Welcome to 2CarPros.

Often times, an engine vacuum leak can cause a rough idle and stall. Also, an idle air control valve (IAC) can do it too. The IAC is responsible for maintaining the engine idle speed.

Before we jump into the IAC, first check for engine vacuum leaks. Here is a link that explains how to check. If the problem started after the tune up, there is a good chance this is the problem.

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Here is another link you may find of interest:

https://www.2carpros.com/articles/stall-at-idle

Start with this and let me know what you find.

Take care,
Joe