Engine cooling issue....still
Thread Starter
Drifting
Joined: Oct 2014
Posts: 1,733
Likes: 403
From: Atlanta, GA
Engine cooling issue....still
2015 Z51 M7...54,000 miles
I still have this intermittent event where the damn cooling fan does NOT turn on. Yes, my AC is on. I drove Atlanta to Orlando today. No problems at all...until some minor stop n go once I was off the interstate in Orlando. Cool outside temps and my engine temp creeped north of 220.
While I was stopped for a few minutes, I shut the car off then turned it back on...boom...fan started running. I could hear it.
UGH....so annoyed at this so random gremlin. It NEVER happens when I visit a service dept..therefore, they haven't done any corrective action.
So...question, how difficult is it to swap to the Z06 fan? Any gotchas?
Moderator emeritus
Joined: Jun 2001
Posts: 18,599
Likes: 3,951
From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
The Z06 fan took me less than an hour to swap out. You might be having the same issue that the 2014s had with the fan.
https://www.corvetteforum.com/forums...-to-260-a.html
AND
https://www.corvetteforum.com/forums...any-ideas.html
Elmer
https://www.corvetteforum.com/forums...-to-260-a.html
AND
https://www.corvetteforum.com/forums...any-ideas.html
Elmer
Drifting
Joined: Nov 2013
Posts: 1,503
Likes: 600
both my 2014 did the same exact thing.. Test by driving over 50 miles on a highway without stopping... That should put the fan to sleep... after you stop the temp should/will rise...
You can turn it off and restart or Call your service department and have them meet you with the mechanic who will work on your car... pull up into the service department and let them see the fan not working while it is overheating... Video the whole thing... I restarted before the temp got to 240 degrees.. I did exactly that on my first one....
my second C7 I did not mess with it, I just ordered a new fan and replaced it along with an AFE intake filter
here is the 2015 Z06 fan https://www.gmpartsdirect.com/auto-p...oling-fan-scat
You can turn it off and restart or Call your service department and have them meet you with the mechanic who will work on your car... pull up into the service department and let them see the fan not working while it is overheating... Video the whole thing... I restarted before the temp got to 240 degrees.. I did exactly that on my first one....
my second C7 I did not mess with it, I just ordered a new fan and replaced it along with an AFE intake filter
here is the 2015 Z06 fan https://www.gmpartsdirect.com/auto-p...oling-fan-scat
Thread Starter
Drifting
Joined: Oct 2014
Posts: 1,733
Likes: 403
From: Atlanta, GA
I had learned from this forum to do the restart thing. Thankfully...that has worked each time.
It's had this random thing since I bought her gently used in 2016. I haven't tracked yet...I WANT to this year but nervous about the cooling thing. I'll replace the fan before I do.
so....replacing the fan isn't an epic task?
My experience level is very basic but I'm a solid learner. Example: I have NEVER done a brake job before. After reading, watching, learning on here and YouTube, I did my own rotors and pads. Basic stuff for a lot of you fellas but it was a vertical learning curve for me. After doing that, I think I could swap out a tranny now. LOL.
It's had this random thing since I bought her gently used in 2016. I haven't tracked yet...I WANT to this year but nervous about the cooling thing. I'll replace the fan before I do.
so....replacing the fan isn't an epic task?
My experience level is very basic but I'm a solid learner. Example: I have NEVER done a brake job before. After reading, watching, learning on here and YouTube, I did my own rotors and pads. Basic stuff for a lot of you fellas but it was a vertical learning curve for me. After doing that, I think I could swap out a tranny now. LOL.
Thread Starter
Drifting
Joined: Oct 2014
Posts: 1,733
Likes: 403
From: Atlanta, GA
The Z06 fan took me less than an hour to swap out. You might be having the same issue that the 2014s had with the fan.
https://www.corvetteforum.com/forums...-to-260-a.html
AND
https://www.corvetteforum.com/forums...any-ideas.html
Elmer
https://www.corvetteforum.com/forums...-to-260-a.html
AND
https://www.corvetteforum.com/forums...any-ideas.html
Elmer
Moderator emeritus
Joined: Jun 2001
Posts: 18,599
Likes: 3,951
From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
Yep, nothing but getting the intake out of the way, a couple of bolts, , some push pins to pop, an electrical connection and done.
Scroll to post #29. It has the replacement procedure in detail.
https://www.corvetteforum.com/forums/c7-tech-performance/4070648-2014-overheated-to-260-a.html#post1598481549
Elmer
Scroll to post #29. It has the replacement procedure in detail.
https://www.corvetteforum.com/forums/c7-tech-performance/4070648-2014-overheated-to-260-a.html#post1598481549
Elmer
Last edited by eboggs_jkvl; Jan 17, 2020 at 08:56 AM.
Racer
Joined: Apr 2018
Posts: 329
Likes: 101
From: Chiggerbranch, MS
I had this issue once in my 2014, restarted and fan took care of it. I searched online for 6 months to find a Z06 fan without success. Finally a forum member contacted me and I got it from him. He traded C7's and did not need it. I hope the supply of Z06 fans had caught up and you can get one. Like it was said, it only takes an hour to swap them out. Since swapping no problem at all.
Race Director
Joined: Jan 2014
Posts: 10,709
Likes: 7,101
From: Fulshear, TX
I added the Z06 fan to my 2014 Z51 and it's not a tough job. Basically remove the hood duct and intake system and you have full access to it. The fan is $194 from RockAuto, and there are plenty of 5% off promo codes available if you search. Brand new OEM ACDelco part for 15-19 Z06.
https://www.rockauto.com/en/moreinfo...=3315156&jsn=8
https://www.rockauto.com/en/moreinfo...=3315156&jsn=8
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Thread Starter
Drifting
Joined: Oct 2014
Posts: 1,733
Likes: 403
From: Atlanta, GA
You guys rock.
Just ordered the fan from the rock auto link. Can't wait to eliminate this rogue issue.
When you guys changed out the fan, did your car run any cooler? Mine seems at home at 205 degrees when nothing is going wrong.
Just ordered the fan from the rock auto link. Can't wait to eliminate this rogue issue.
When you guys changed out the fan, did your car run any cooler? Mine seems at home at 205 degrees when nothing is going wrong.
Moderator emeritus
Joined: Jun 2001
Posts: 18,599
Likes: 3,951
From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
Nope to the cooler. The t-stat and ECM have their jobs to do and the car runs a just fine temperature.
Elmer
Race Director
Joined: Jan 2014
Posts: 10,709
Likes: 7,101
From: Fulshear, TX
It won't make your car run any cooler during normal conditions, but will keep it more stable when things start heating up. A bottle of Redline Water Wetter does make a noticeable difference as well. My 2014 Z51 consistently runs 190-195F engine & oil temps with the stock thermostat and ECU fan tables. I also have the Z06 grille.
Last edited by Kracka; Jan 18, 2020 at 11:21 AM.
Thread Starter
Drifting
Joined: Oct 2014
Posts: 1,733
Likes: 403
From: Atlanta, GA
interesting that there are such differences in engine temps. Wish mine would stay put at 200. But 205-210 is its current flux. Just a few more ticks and the AC kicks off.
Looking forward to getting the new fan installed and see how she does.
Looking forward to getting the new fan installed and see how she does.
Thread Starter
Drifting
Joined: Oct 2014
Posts: 1,733
Likes: 403
From: Atlanta, GA
On my road trip this past weekend, I was playing with all the displays...which I hand't done in a while.
In tour mode display, there is a digital engine temp which does NOT match the analog needle temp. Are these read at two different locations in the coolant system? Or is it something completely different.
Digital read 198ish....analog/needle was 205. This was at constant interstate speeds.
I don't have my manual readily available to poke around about it at the moment.
In tour mode display, there is a digital engine temp which does NOT match the analog needle temp. Are these read at two different locations in the coolant system? Or is it something completely different.
Digital read 198ish....analog/needle was 205. This was at constant interstate speeds.
I don't have my manual readily available to poke around about it at the moment.
Racer
Joined: Sep 2019
Posts: 469
Likes: 256
From: Gulf Coast AL
On my road trip this past weekend, I was playing with all the displays...which I hand't done in a while.
In tour mode display, there is a digital engine temp which does NOT match the analog needle temp. Are these read at two different locations in the coolant system? Or is it something completely different.
Digital read 198ish....analog/needle was 205. This was at constant interstate speeds.
I don't have my manual readily available to poke around about it at the moment.
In tour mode display, there is a digital engine temp which does NOT match the analog needle temp. Are these read at two different locations in the coolant system? Or is it something completely different.
Digital read 198ish....analog/needle was 205. This was at constant interstate speeds.
I don't have my manual readily available to poke around about it at the moment.
Racer
Joined: Apr 2018
Posts: 329
Likes: 101
From: Chiggerbranch, MS
I found the answer on this forum for my analog gauge showing 220 after the engine is warm. The 2014 Stingray models show 220 that is just a setting for the gauge after the engine is warm. When you change to the digital readout it is 195 and all is well.
Moderator emeritus
Joined: Jun 2001
Posts: 18,599
Likes: 3,951
From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
The analog gauge is the "Don't scare the driver gauge" and it usually gives what I call "the relative heat is". When it goes up toward the red, pay attention. The digital gauge is the most accurate for the temperature.
Elmer
Elmer
Safety Car
Joined: Jul 2018
Posts: 4,303
Likes: 2,055
From: Margate, FL
Above is correct for the 2014: 220 on the analog gauge is "normal", where as the digital gauge will show the true temp, which will be lower - normally like 195 (+/- 10).
More info: https://www.corvetteforum.com/forums...temp-high.html
More info: https://www.corvetteforum.com/forums...temp-high.html
Moderator emeritus
Joined: Jun 2001
Posts: 18,599
Likes: 3,951
From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist