Alright I got back early and went to go look at the xterra.
Didn't get a chance to try the brake cleaner idea because as it was running I would heard an intermitant(sp) click. Not the a/c clutch. It would do it more when in drive or reverse with the a/c on then sitting in park. I would say 2-5 clicks a minute in park and 5-10 in drive or reverse with a/c on.
Didn't want to spray anything extremely flamable with a click going on haha.

I think its the #6 spark plug wire. I think something is taking the spark from the wire and its not hitting the spark plug.
I disconnected #6 to see if the click would happen and make the car act like it would try to stall more and didn't hear anything.

What is your take on this?

I'm going to go to the dealer tomorrow to see if I can pick up just the #6 wire rather the spend 40 bucks for all 6 at autozone.
The engine shakes everytime that click happens so I know its misfiring.

I also moved around all the wires cleaned out all the ports on the pass side with an air gun just in case a piece of metal shaving or something was touching it. Didn't touch the driver side because they are all a bitch to get too.
If its that #6 I don't need to remove the upper intake to replace that wire do I? Its a royal bitch to get too.