Possible problem with my Z?

Amon

Hey guys,

I havent posted here much, but Ive been lurking since March at least. I have ran into a few things with my Z that concern me (besides the paint) and wanted to see if you guys have any input or advice.

Lately, since it has gotten colder here in Tennessee, I have noticed that when I start my Z in the morning, the car will idle at about 1.5k rpms. Now this didnt concern me too much initially as I assumed that it was a feature in the car that would help it warm up quicker, however lately about 2-3 seconds after starting the car, there is a noise that is coming from the rear that sounds almost as if something is locking into place. I have tried to pinpoint exactly where the sound is coming from, but havent had the luck yet. At first, I thought it was a backfire, but I have been able to rule that out.

Now the second thing that concerns me is that after all of this has happened, I can smell something in the cabin. It smells almost like a gas/oil burning, but Ill be the first to admit that I dont know a huge amount about the internal workings of a car so I cant pinpoint that either.

Is this something that anyone else is experiencing or should I be concerned? The service shop at the dealer has been trying to play it off like its normal, but it just seems a little odd to me. I only smell this for the first minute or so of driving and then everything is back to normal. I also havent noticed a decrease in power.

Thanks in advance for your input.