View Poll Results: If you've Overheated What is Your Stage Aero 1, 2 or 3
Voters: 348. You may not vote on this poll
ZO6 overheating issues ***MEGA Merge***
05-25-2015, 08:01 PM
#2201
The negative SEO campaign begins...great title to the video "C7 Z06 overheating". I see ambient temp was 85, likely with a high humidity content making the "real feel" probably mid 90's. There are preparations for the car to sustain these types of temps better...you might make that clear in the "info" part of your video, in order to not mislead viewers.
05-25-2015, 10:31 PM
#2202
Welcome to the club. Thanks for info. Please post screen shot of PDR stats for Vehicle health.
And I agree with Snorman-- you weren't in Track mode, which is why you see the blinky squiggly car in your video (indicating nanny interventions). The mode-selection procedure is confusing, and you can easily switch modes accidentally by hitting the top button. Bad UI design.
Paddle shifting DEFINITELY helps and doesn't really slow you down once you establish shift points--- but temps still run hot so it might not be a solution for 85+ deg temps.
Did you experience a power steering warning (or notice steering effort increasing)?
And I agree with Snorman-- you weren't in Track mode, which is why you see the blinky squiggly car in your video (indicating nanny interventions). The mode-selection procedure is confusing, and you can easily switch modes accidentally by hitting the top button. Bad UI design.
Paddle shifting DEFINITELY helps and doesn't really slow you down once you establish shift points--- but temps still run hot so it might not be a solution for 85+ deg temps.
Did you experience a power steering warning (or notice steering effort increasing)?
05-26-2015, 10:09 AM
#2204
Le Mans Master
05-26-2015, 10:23 AM
#2205
Melting Slicks
I'm guessing it's a budget constraint. Why else would they keep putting radiators more suited to a Cavalier or Cobalt...Aveo..whatever it's called now, than one fitting a performance car in the Corvette, and Camaro?
05-26-2015, 10:46 AM
#2206
Le Mans Master
Corvettes in my experience have a long storied history of not having the best cooling systems. It's one of the real flaws of the car, that it seems even after 62 years of building them they still haven't elected to address.
I'm guessing it's a budget constraint. Why else would they keep putting radiators more suited to a Cavalier or Cobalt...Aveo..whatever it's called now, than one fitting a performance car in the Corvette, and Camaro?
I'm guessing it's a budget constraint. Why else would they keep putting radiators more suited to a Cavalier or Cobalt...Aveo..whatever it's called now, than one fitting a performance car in the Corvette, and Camaro?
05-26-2015, 04:29 PM
#2208
I would bet that you could create a model that would predict overheating very accurately. Ambient temp and total horsepower generated per lap/BTUs of heat generated would be the variables. GM probably has a spreadsheet.
We will see what happens when the car is driven in magazine competitions. Best Driver's Car 2015?
05-26-2015, 09:24 PM
#2210
05-26-2015, 10:25 PM
#2211
Pro
As far as I have found in my C7Z06 there are a couple of new car bugs that seem to affect the 1st couple of thousand M7 cars.
1. fuel pressure rail switch needs to be replaced. problem starts with a backfire followed by a #7 misfire than escalates to loosing power (50%) after a couple of laps and continues to decline. May or may not give code. this has been reported by some on here.
2. If you run slicks and you run 10/10 you can overheat in as little as 10 minutes. If you run the OEM SC it will take 15 minutes and as reported by others if you run 8-9/10 and OEM SS it will last a 20-25 minute session.
3. The PDR will sometimes not recognize the SD card and or will not recognize the start/finish line as marked/set on earlier sessions. It can be a little frustrating.
4. The popping out of gear due to shifter misalignment, this is compounded by continuing to run the car and may or may not be able to be corrected with the alignment. I installed a MGW before it became an issue.
5. I have the same rotor issue as Catchmeifyoucansam, perhaps not as severe but as Cathmeifyoucansam has gone through 4-5 sets of brake pads and I have only been through 2-3/4.
6. Others have posted the power steering overheat, I have not had this issue
The A8 seems to not have these new car bugs except when pushed 10/10 it will overheat, however as Sean has posted running the car at 8-9/10 it is very fast as his Daytona time shows.
My car is currently having the fuel pressure rail switch replaced. This took some time for GM to do so as I did not have codes other than the #7 misfire. I am waiting on GM about my front rotors and if it is an issue or if this is normal?
I what my car to work as there is nothing else that "floats my boat" right now. I will back off and run 8/10 until GM and or someone comes up with a solution on the overheat.
I agree that this issue needs to continue to be discussed and if the TROLLS help keep it alive I'm A-OK with them chiming in. Keep the pressure on GM to let the GM engineers fix it.
1. fuel pressure rail switch needs to be replaced. problem starts with a backfire followed by a #7 misfire than escalates to loosing power (50%) after a couple of laps and continues to decline. May or may not give code. this has been reported by some on here.
2. If you run slicks and you run 10/10 you can overheat in as little as 10 minutes. If you run the OEM SC it will take 15 minutes and as reported by others if you run 8-9/10 and OEM SS it will last a 20-25 minute session.
3. The PDR will sometimes not recognize the SD card and or will not recognize the start/finish line as marked/set on earlier sessions. It can be a little frustrating.
4. The popping out of gear due to shifter misalignment, this is compounded by continuing to run the car and may or may not be able to be corrected with the alignment. I installed a MGW before it became an issue.
5. I have the same rotor issue as Catchmeifyoucansam, perhaps not as severe but as Cathmeifyoucansam has gone through 4-5 sets of brake pads and I have only been through 2-3/4.
6. Others have posted the power steering overheat, I have not had this issue
The A8 seems to not have these new car bugs except when pushed 10/10 it will overheat, however as Sean has posted running the car at 8-9/10 it is very fast as his Daytona time shows.
My car is currently having the fuel pressure rail switch replaced. This took some time for GM to do so as I did not have codes other than the #7 misfire. I am waiting on GM about my front rotors and if it is an issue or if this is normal?
I what my car to work as there is nothing else that "floats my boat" right now. I will back off and run 8/10 until GM and or someone comes up with a solution on the overheat.
I agree that this issue needs to continue to be discussed and if the TROLLS help keep it alive I'm A-OK with them chiming in. Keep the pressure on GM to let the GM engineers fix it.
Last edited by Cyclone09Z06; 05-26-2015 at 10:34 PM.
05-27-2015, 12:25 AM
#2212
Le Mans Master
I get his special fan club stalking replies too. I don't even bother replying anymore as I don't want to fight with GM interns. Just ignore him - he obviously doesn't have a hi-performance car or any real track experience and just parrots anecdotal info like many "fans" on this particular board.
05-27-2015, 02:52 AM
#2213
Safety Car
As far as I have found in my C7Z06 there are a couple of new car bugs that seem to affect the 1st couple of thousand M7 cars.
1. fuel pressure rail switch needs to be replaced. problem starts with a backfire followed by a #7 misfire than escalates to loosing power (50%) after a couple of laps and continues to decline. May or may not give code. this has been reported by some on here.
2. If you run slicks and you run 10/10 you can overheat in as little as 10 minutes. If you run the OEM SC it will take 15 minutes and as reported by others if you run 8-9/10 and OEM SS it will last a 20-25 minute session.
3. The PDR will sometimes not recognize the SD card and or will not recognize the start/finish line as marked/set on earlier sessions. It can be a little frustrating.
4. The popping out of gear due to shifter misalignment, this is compounded by continuing to run the car and may or may not be able to be corrected with the alignment. I installed a MGW before it became an issue.
5. I have the same rotor issue as Catchmeifyoucansam, perhaps not as severe but as Cathmeifyoucansam has gone through 4-5 sets of brake pads and I have only been through 2-3/4.
6. Others have posted the power steering overheat, I have not had this issue
The A8 seems to not have these new car bugs except when pushed 10/10 it will overheat, however as Sean has posted running the car at 8-9/10 it is very fast as his Daytona time shows.
My car is currently having the fuel pressure rail switch replaced. This took some time for GM to do so as I did not have codes other than the #7 misfire. I am waiting on GM about my front rotors and if it is an issue or if this is normal?
I what my car to work as there is nothing else that "floats my boat" right now. I will back off and run 8/10 until GM and or someone comes up with a solution on the overheat.
I agree that this issue needs to continue to be discussed and if the TROLLS help keep it alive I'm A-OK with them chiming in. Keep the pressure on GM to let the GM engineers fix it.
1. fuel pressure rail switch needs to be replaced. problem starts with a backfire followed by a #7 misfire than escalates to loosing power (50%) after a couple of laps and continues to decline. May or may not give code. this has been reported by some on here.
2. If you run slicks and you run 10/10 you can overheat in as little as 10 minutes. If you run the OEM SC it will take 15 minutes and as reported by others if you run 8-9/10 and OEM SS it will last a 20-25 minute session.
3. The PDR will sometimes not recognize the SD card and or will not recognize the start/finish line as marked/set on earlier sessions. It can be a little frustrating.
4. The popping out of gear due to shifter misalignment, this is compounded by continuing to run the car and may or may not be able to be corrected with the alignment. I installed a MGW before it became an issue.
5. I have the same rotor issue as Catchmeifyoucansam, perhaps not as severe but as Cathmeifyoucansam has gone through 4-5 sets of brake pads and I have only been through 2-3/4.
6. Others have posted the power steering overheat, I have not had this issue
The A8 seems to not have these new car bugs except when pushed 10/10 it will overheat, however as Sean has posted running the car at 8-9/10 it is very fast as his Daytona time shows.
My car is currently having the fuel pressure rail switch replaced. This took some time for GM to do so as I did not have codes other than the #7 misfire. I am waiting on GM about my front rotors and if it is an issue or if this is normal?
I what my car to work as there is nothing else that "floats my boat" right now. I will back off and run 8/10 until GM and or someone comes up with a solution on the overheat.
I agree that this issue needs to continue to be discussed and if the TROLLS help keep it alive I'm A-OK with them chiming in. Keep the pressure on GM to let the GM engineers fix it.
I'm really surprised you are not getting the "service the power steering unit" message. Your tires are even stickier than cup 2s.
05-29-2015, 01:13 AM
#2214
Advanced
I know this is late in the thread but 300 deg oil temp & 260 deg trans temp. Are we sure GM put coolers in the car that work? I'm curious about the temps for a M7 C7 Z51 after a 20 minute track session at COTA or Laguna Sega, etc.
Last edited by vader03; 05-29-2015 at 08:22 AM.
05-29-2015, 08:48 AM
#2215
05-29-2015, 08:52 AM
#2216
Did your friend at least use the 80/20 mix with water wetter? Great results coming in from something so simple, as well as been used for years on end.
05-29-2015, 08:59 AM
#2217
Dude, open your eyes and ears for a second and try to listen what I am trying to say here.
Let's try again....
Z06 overheats in 5 laps. That's 5-6 minutes of track time. While those cars may require cooling solutions for extended track use, NONE of them require additional cooling for 5 laps.
Apples to apples....
Got it now?
None of those 13-15 laps were in warm CA weather. We'll see how the car does in spring/summer time. All those track times in Atlanta were in 40-60F weather.
Also, a lot of people in the BMW and Porsche forums track their cars (M3s or GT3s). Show me one person who actually upgraded their cooling. There is a huge market for corvette here for aftermarket, because the car has a lot of deficiencies.
Let's try again....
Z06 overheats in 5 laps. That's 5-6 minutes of track time. While those cars may require cooling solutions for extended track use, NONE of them require additional cooling for 5 laps.
Apples to apples....
Got it now?
None of those 13-15 laps were in warm CA weather. We'll see how the car does in spring/summer time. All those track times in Atlanta were in 40-60F weather.
Also, a lot of people in the BMW and Porsche forums track their cars (M3s or GT3s). Show me one person who actually upgraded their cooling. There is a huge market for corvette here for aftermarket, because the car has a lot of deficiencies.
05-29-2015, 09:59 AM
#2218
Car was track prepped per owners manual, including a 60/40 mix. Lately paddle shifting with a bit of short shifting in turns (car has plenty of TQ, so no big deal) has been helping, but temps still very high.
Might dilute coolant further on really hot days, but would really like to see a GM-approved solution here.
Edit: I take that back, as of this event, the car had only had the 500 mile oil change. Manual says to track the car once briefly and then change the fluids. We did that before the first full track day (this was just one session).
Last edited by ChrisN123; 05-29-2015 at 11:35 AM.
05-29-2015, 10:09 AM
#2219
Car was track prepped per owners manual, including a 60/40 mix. Lately paddle shifting with a bit of short shifting in turns (car has plenty of TQ, so no big deal) has been helping, but temps still very high.
Might dilute coolant further on really hot days, but would really like to see a GM-approved solution here.
Might dilute coolant further on really hot days, but would really like to see a GM-approved solution here.
05-29-2015, 10:19 AM
#2220
Hopefully it actually helps.