[gazzerr]

Hi Jason, I have one of those Actron meters too. I couldn't get it to work reliably either. I remember doing some searches and many people were having the same issue. I don't think it's compatible with the electrical signals at the test port. Hopefully others will chime in on this.

My test port was hidden under the rear fuse panel and I had to fish it out. There's a rubber cap on the top. See if you can find yours there too.

My car was surging and it was air leaks and a bad O2 sensor. You might just have a fuel mixture that needs adjusting but don't play with it until you can verify that you have correct fuel pressures, no air leaks and your timing is set correctly.