Hmm... for some reason my idle is really rough in my '85 NA Z.... Im not exactly sure, but I believe it is my MAF sensor. Anyone have any ideas on what this could be caused by?

One other problem I have is once about every other time I put my car in park after running it and getting it warm and everything, it goes up to about 2000 RPMs... And just stays there... Any ideas on this one?

 

Please run the ECU codes (I posted the procedure in your Hesitation thread). This problem is more than likely related to the hesitation.

 

When was the last time you gave it a tune up?