I turned on my Z Christmas morning and when it started it sounded just like a diesel engine! My first thought was low oil, so I turned it off checked the oil a few times, waited, checked some more, and it was just fine. I get back in a lil later and when I try turning it on it was sounding like it was almost dead and barely wanted to turn on, but it did and I let it warm up. Turned it off and on one more time and it has been running great ever since. Should I be worried about it?

And also I have a 5AT and Ive noticed the Z has been starting to redline now when I push it every so often, wtf is up with that? It has never done this to me before.

 

Your transmission is slipping pretty bad.

As for the rough start: spark plugs? Could have a misfire somewhere. But I'm surprised you don't have a light on. Is your gas tank full? How old is your gas? When was the last time you started the car?

 

someone went pee pee in your gas tank

 

What's going on here lately?

 

No my gas tank was not full, I was at maybe midway from 1/4 to half a tank and the gas I would say was maybe 5 or 6 days old. And the Z is a daily driver so I use it EVERY day, which is why this scared the hell outta me. & as far as my tranny goes, should I take it in to the dealer? Its still under warranty for a few thousand more miles.

And I was just as surprised as there being no light on either. I was expecting it to pop on at anytime, but nothing yet.

 

Yes take your Z to the dealer if your warranty is close to being up NOW is the time to get **** fixed.

 

That's exactly what I thought.

 

I'd suspect a crank or cam position sensor, maybe wet or something. No CEL along with it? Sometimes the ecu will store sensor information of a problem before tripping the CEL, have it scanned for stored codes.