I have asked this question before, but never got a clear answer. This is the first winter/fall i have had my z, and this is new to me. Heres what happens...

I start it up, let it sit some, (btw the longer I wait for it to warm up the less it whines...) then when i start driving, through the gears it whines and when I really get on it, it whines even more. Is this something the z does when its warming up? It doesnt do it when in neutral btw.

Also, its a 2006 MT revup

 

Here is a hint: do not troubleshoot a car UNTIL it have reached operating temperature. Cars do strange things when they are cold.

 

You can try tightening the serpentine belt. The belt gets tighter as it heats up which is why I think the sound gets better after it reaches normal operating temp.

You may just need to just go ahead and replace it, if it's in bad shape.

 

the serpentine belt? how hard is that to replace? its not like a loud squeek noise noise though its a whine...so idk. I really have no idea, has anyone else had this problem?

 

It's normal. Don't replace anything. It's always a good idea to let a car warm up before you drive in very cold weather anyway.

I whine when it's cold too!

 

^^^^ ok good, thanks for the info!

 

It doesn't whine while in neutral then it has to be the tranny. I had the same exact problem when it reached like 34 degrees in FL. I dont mean to scare you but that same week I heard the whine my tranny blew

 

its been doing it ever since it has been cold...which has been since like october...everything feels fine. no problems with power loss or even transmission wise...Anyone else have an idea?

 

Shifting into gears not a problem I assume?

If not then your good. Even with my new tranny I still hear a little whine. Just let it warm up

 

yea i mean its harder to downshift when its cold, but i assume that is normal. Its nothing i havent experienced with other cars, just a loud whine when its cold...i guess just letting it warm up is the fix.

 

you running a blower?

 

https://my350z.com/forum/vq35hr/4142...when-cold.html

 

Mine does the same thing, especially if I get on it in 3rd gear. I was thinking it was the diff, not sure.

 

hmmmm, im gonna take it to the dealer tomorrow

 

just take it and get the belts replaced...it won't hurt anything....

 

Mine did that. It was because steering fluid was low. Have you checked?

 

My 06 has done that since new, does not seem to be aproblem

 

after only 35,000 miles????

 

will go check real quick.

 

^^^^ levels were perfect...i didnt think it was a problem with that.