four0nefive

To add to that, we already know the Chevy knows MT has overheated it. The Z06 is an absolutely amazing car, but I honestly think this car specifically has this problem since it hasn't happened to anyone else.

four0nefive

Good to see they responded to you. Here's the thing, as far as I know, they have 2 Z06's right now, a yellow Z07 and the red stage 1 car. We know the red car is a manual, but I'm not sure about the Z07. I did Tweet at Motor Trend a few weeks ago to ask if the yellow car was an auto or manual, but got no response.

boogie00

That's cause they only reply when u do tweet them!

QUIKAG

Really sounds like a sensor or cooling issue with this specific car. The new Z06 can overheat obviously on track, but around town, it should never overheat under any circumstances including 130F temps in the middle of the Sahara desert.

four0nefive

Oh oops, I meant to say when I did.

JackTripper

Sounds like an isolated incident specific to that car. I had mine in 95+ temps both cruising and VERY spirited driving and I never had an issue.

Bottom-line is that I am very happy with my purchase and it is unfortunate that some are not.

<<427_V8>>

I don't think anyone believes at this point there's a problem with every C7 Z06. Clearly many people are running just fine at any temp on and off the track. The issue as far as I can tell is random luck of the draw - I think most people agree on this, so not sure why people keep stating that over and over and over. I don't see anyone really arguing it's with all cars, though there is some discussion on acceptable/safe temp levels on the track - but that's another thread.

The main issue is that there's been multiple cases of overheating alerts (May or may not be actual overheating) with multiple different systems (Power steering, engine oil, coolant) experienced both on and off the track by forum members and of course press/journalists/reviewers. So there's no denying that a consistently inconsistent issue exists outside of just a radiator cap being busted - if that phrasing makes sense.

Also, this doesn't come down to some are happy with their purchase and some are not - it's the fact that SBC and others can't even use their cars as intended and some can. That's like a table of people ordering steak and some end up with chicken - you can't just write them off and say they weren't happy with their meal. They didn't get what they ordered.

sam90lx

PDR, Proof?

sam90lx

Poor-sha

Another first hand data point. This weekend I was at the track with another C7Z that had the power steering overheat on track. In both cases the driver (forum member ESVA) left the AC on. It was only during the single session that the AC was accidentally left on that the PS overheated. This is exactly what happened to my student at Autobahn last month. ESVA is also the car A8 car that had issues at NCM VIR but seems to be doing fine as long as he paddle shifts.

So far it seems like running with the AC on and A8 cars in "D" on track are the two scenarios that will likely cause the car to overheat. Turning the AC off and running either an M7 or paddle shifting the A8 seems to work fine for most folks.

LATrafficJam

Just out of curiosity, are the ones overheating running with front license plates blocking a lot of the radiator airflow?

four0nefive

I know for a fact that all the Z06's that MT has tested had no front plate.

LATrafficJam

I'm awaiting my 2016 Z06, which I expect to arrive within the next two weeks.

I am coming from a 2008 Z06 and a 2013 CTS-V coupe, both manual 6-speeds. Never experienced any overheating issues with those, though I never tracked them. I did, however, do mountain and desert runs, and never once saw high temps registered.

What the heck is up with this overheating issue?

OnPoint

The specific car that is the subject of this thread has some sort of issue. Lost its fans or sensor issue etc (the oil temp on it wasn't hi - so something is up with that car).

I've driven mine in 100 degree temps, in city stop-and-go traffic, AC running and temps - coolant and oil - stay in the hi 190s, to just a bit over 200.

Over 8500 of these rigs on the road, and you're not going to overheat it driving it/hooning around in it, and you're not going to overheat it on track unless you're running in high ambient temps and can push the car very hard.

Relax. Enjoy the wait for your car. And when you get it, go have a ball in it.

Crabbers

This seems like a vehicle specific issue for this car. Don't worry about it, and if anything does happen, then you have the warranty.

mookiec

But it's not like this is the only car that has had cooling issues and none of us know exactly how many do. Of the 8500 rigs you mention how many really post here?

Bottom line is this is 2015, cars should not overheat no matter who/what/where/when or why.

Steve Snake Driver

Don't let the clown corps get you down.

OnPoint

No, I don't think the owners of all the C7Zs produced to date are on this forum.

That said, I know for a fact how my C7Z behaves, and it's never done anything like the car that is the subject of this thread. And I've hammered it as hard as nearly anybody would (and harder than many would) on the street and in the middle of bf nowhere in triple digit temps.

Do you want to know what I believe the anomaly is? It's the car that is the subject of this thread, and not my car, which seems to operate just like other owners have reported theirs operates.

I've seen, I think, exactly 2 instances of overheating during street driving. The first was an anomaly that was corrected IIRC. And now this one.

There have been folks (nearly all of whom are pretty damned decent track drivers) who have exposed the upper limits of the cooling system while driving hard on track in high ambient temps. Even with those cars, we're beginning to learn how to manage/mitigate the issue - thanks to the guys who are tracking them hard in those conditions.

I suppose if you want to look for a reason to not buy this car, or a reason to crap on it, you can cling to the idea of overheating being some sort of huge, or even prevalent issue on a street driven Z. Up to you. But just know if you do, you're basing such a decision on BS.

mookiec

Nothing like having your 100k "best Vette ever" getting ripped apart near new and having it sit outside while they wait for parts?

davepl

How many people in that 1000+ posts actually had a problem? 5 at most? Big deal. I can crank out 200 posts on my most passionate issue too.

I find it weird ECT would be in the danger zone with oil temp that low. I mean at that point the oil would be taking heat FROM the coolant via the heat exchanger, so it really makes so sense.

Also, while I don't feel like reading 130 pages to find out again, has anyone actually blown the rad cap?

I think the track guys have a real issue. We're going through "EXTREME HEAT WARNING" here (which means 101F for us in the PNW) and mine runs 197. I actually TRIED last week to heat it up as much as I could - power up hills, brake down, high RPM, 100+ ambient temps. I got it to 217F and the moment I stopped it dropped back to 200F.

Regardless of whatever problems happened elsewhere, this one doesn't add up with the oil temp.

Every time I see another overheating post I revel in one less Z06 I'll see coming the other way. Never seen one yet, in fact. You guys keep baking them and I'll be the only one out here soon.