HIGH coolant temp (another one)
Thread Starter
Instructor
Joined: Jul 2018
Posts: 104
Likes: 20
Ding ding, we have a winner. I can almost guarantee you that splitter is preventing air from flowing through your radiator. There are a bunch of threads of people realizing that. Certain splitter designs are better, others worse. I think the air dam will help but you'll still probably be running a bit hot. There are a couple tricks you can do to minimize the effect the splitter is having on your temps. Stuff like programming your fans, lower temp thermostat, cutting out your front plate and adding mesh.
there is the problem. I will modify it or dump it..
This makes totally sense
Last edited by Sebambam; Apr 19, 2020 at 10:45 PM.
3rd Gear
Joined: Apr 2020
Posts: 3
Likes: 0
Hi Guys
So i experience High coolant temps especially when on the freeway driving above 60mph up to 255 degrees
it cools down at city street speeds and doesnt overheat in stop and go traffic!
Car is a 99, cammed 6.0 LQ9 Auto
Codes are
B2723H, B2262H B2264H
U1096H U1064H U1016H
C2120HC
i recently changed the Surge tank resorvoir due to a bad Coolant level sensor, after that i experienced the higher temps the 1st time...
Then i changed the Thermostat as well
So i am thinking there must be Air in the coolant system?!
I tried the common methods to burb the air with no success
i also tried to blow compressed air through the Surge tank and bleed out of the Steam valve T hose (through throttlebody) that goes to the radiator top
I feel like i got some Air out there. But i just drove it while it was mainky @ 230ish, but when getting on it a bit the temp went up to 250 again. And then again when getting of the Freeway the temp goes down.
The fans kick on, i dont know when driving because the vette is loud .lol
But in P the fans are definitly on and cool down the car to its operating temps for sure.
BTW i tried to go to Jiffy lube and firestone to get a machine flush/bleeding ... LOL this fools denied my Vette and said i have to go to the dealership ahaha...
So i am a bit frustrated right now
Any help
So i experience High coolant temps especially when on the freeway driving above 60mph up to 255 degrees
it cools down at city street speeds and doesnt overheat in stop and go traffic!
Car is a 99, cammed 6.0 LQ9 Auto
Codes are
B2723H, B2262H B2264H
U1096H U1064H U1016H
C2120HC
i recently changed the Surge tank resorvoir due to a bad Coolant level sensor, after that i experienced the higher temps the 1st time...
Then i changed the Thermostat as well
So i am thinking there must be Air in the coolant system?!
I tried the common methods to burb the air with no success
i also tried to blow compressed air through the Surge tank and bleed out of the Steam valve T hose (through throttlebody) that goes to the radiator top
I feel like i got some Air out there. But i just drove it while it was mainky @ 230ish, but when getting on it a bit the temp went up to 250 again. And then again when getting of the Freeway the temp goes down.
The fans kick on, i dont know when driving because the vette is loud .lol
But in P the fans are definitly on and cool down the car to its operating temps for sure.
BTW i tried to go to Jiffy lube and firestone to get a machine flush/bleeding ... LOL this fools denied my Vette and said i have to go to the dealership ahaha...
So i am a bit frustrated right now
Any help
I also got similar problems like yours, my is 99 vet when running at above 35mile the temp will go up to 240 didn't attempt to go higher. But when running below 35mile the temp start to go down. Have changed out the thermostat and did a flushing still haven solve. Was thinking should I bring it to dealer to check it out. Radiator side seem to be clean, I do also have cold air intake too. Any other things I miss out to check?
Melting Slicks
Joined: Jan 2009
Posts: 3,275
Likes: 739
From: Miami FL
Thread Starter
Instructor
Joined: Jul 2018
Posts: 104
Likes: 20
I also got similar problems like yours, my is 99 vet when running at above 35mile the temp will go up to 240 didn't attempt to go higher. But when running below 35mile the temp start to go down. Have changed out the thermostat and did a flushing still haven solve. Was thinking should I bring it to dealer to check it out. Radiator side seem to be clean, I do also have cold air intake too. Any other things I miss out to check?
Do you run NO the AirDam ?
That is 90% my issue
Thread Starter
Instructor
Joined: Jul 2018
Posts: 104
Likes: 20
3rd Gear
Joined: Apr 2020
Posts: 3
Likes: 0
Thread Starter
Instructor
Joined: Jul 2018
Posts: 104
Likes: 20
I think the mistery is solved.....
IT WAS THE DAMN ZR1 style spoiler..... i cant believe it...
I took it off and drove her arround..
MAX TEMP 208 Degree F
I will anyways add the center Airdam back on, to possibly get more positive Airflow to the radiator.
Well i am happy the mistery is solved.
And this can be a lesson for others. It definitly was a lesson for me.
IT WAS THE DAMN ZR1 style spoiler..... i cant believe it...
I took it off and drove her arround..
MAX TEMP 208 Degree F
I will anyways add the center Airdam back on, to possibly get more positive Airflow to the radiator.
Well i am happy the mistery is solved.
And this can be a lesson for others. It definitly was a lesson for me.
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3rd Gear
Joined: Apr 2020
Posts: 3
Likes: 0
I think the mistery is solved.....
IT WAS THE DAMN ZR1 style spoiler..... i cant believe it...
I took it off and drove her arround..
MAX TEMP 208 Degree F
I will anyways add the center Airdam back on, to possibly get more positive Airflow to the radiator.
Well i am happy the mistery is solved.
And this can be a lesson for others. It definitly was a lesson for me.
IT WAS THE DAMN ZR1 style spoiler..... i cant believe it...
I took it off and drove her arround..
MAX TEMP 208 Degree F
I will anyways add the center Airdam back on, to possibly get more positive Airflow to the radiator.
Well i am happy the mistery is solved.
And this can be a lesson for others. It definitly was a lesson for me.
Drifting
Joined: May 2008
Posts: 1,695
Likes: 490
From: Denver, NC
I think the mistery is solved.....
IT WAS THE DAMN ZR1 style spoiler..... i cant believe it...
I took it off and drove her arround..
MAX TEMP 208 Degree F
I will anyways add the center Airdam back on, to possibly get more positive Airflow to the radiator.
Well i am happy the mistery is solved.
And this can be a lesson for others. It definitly was a lesson for me.
IT WAS THE DAMN ZR1 style spoiler..... i cant believe it...
I took it off and drove her arround..
MAX TEMP 208 Degree F
I will anyways add the center Airdam back on, to possibly get more positive Airflow to the radiator.
Well i am happy the mistery is solved.
And this can be a lesson for others. It definitly was a lesson for me.
Melting Slicks
Joined: Sep 2011
Posts: 2,258
Likes: 544
From: Appleton WI
[QUOTE=Sebambam;1601355892]SOOO...
I also turned on the heater to full blast when at 245.No movement down or up (at least not significant) i tried the AC as well and also no movement./QUOTE]
Now that you have identified the spoiler as the culprit, the ñext question is why the heater didn't affect the temp. Turning on the heater full blast should easily drop the temp 10-20 degrees. It is essentially another radiator.
I was in Georgia when I sucked up a plastic bag. My temps spiked into the 250 range. I turned on the heater full blast and temps dropped to 225. It was 95 degrees outside. Turning on the heater allowed me to drive until I could safely exit and look for the cause of my temp spike.
I also turned on the heater to full blast when at 245.No movement down or up (at least not significant) i tried the AC as well and also no movement./QUOTE]
Now that you have identified the spoiler as the culprit, the ñext question is why the heater didn't affect the temp. Turning on the heater full blast should easily drop the temp 10-20 degrees. It is essentially another radiator.
I was in Georgia when I sucked up a plastic bag. My temps spiked into the 250 range. I turned on the heater full blast and temps dropped to 225. It was 95 degrees outside. Turning on the heater allowed me to drive until I could safely exit and look for the cause of my temp spike.