I haven't had any experiences like that, so I can't be of much help...though I do know someone at work with a Z who told me the car wouldn't start after leaving it for about a month. He gave the battery a jump start and he was able to get it going fine, didn't ask if he was able to rev past 2800 though. I'm honestly not sure if it's that issue or something else though, I'm sure your local mechanic or many others here can give you an idea of what's really going on.

 

I lol'd

 

Try resetting the ECU?

 

Could it be in limp mode, help anyone??? Bump.

 

much like everyone else who had this problem in the studdering thread, it simply went away.. car runs great....

 

I store my Z in the winter and don't have this problem. Then again, I use Stabil and let my car idle about once every few weeks. Try cleaning your intake tube, check your MAF, look for any loose vacuum lines, and throw in some fuel cleaner.