Coolant temperature readout suddenly rising to 201 degrees F
06-09-2022, 11:29 PM
#1
Coolant temperature readout suddenly rising to 201 degrees F
First time poster. I have a 2022 718 Spyder. Car now has 1960 miles on it (almost there!). I have always monitored coolant/oil temp upon start up and have always seen both temperatures rise together, usually taking about 10-15mins of sub 3k rpms to warm up to operating temperature.
The last two drives however, coolant temperature spikes (from cold start) to about 201F degrees within 2 to 3 minutes after starting engine, while oil temperature is rising like it normally does. At this point, the oil is only around 99F degrees but the coolant is all the way up to 201F!
After about 10 minutes, oil is about 163F and coolant is 183F. After 15 minutes, both have stabilized to 216F coolant and 228F oil and operates like it normally does from there. My concern is, why suddenly the *coolant* temperature is erratic and suddenly rises much much faster, never having done this before. No lights or error messages have appeared thus far.
Richard
The last two drives however, coolant temperature spikes (from cold start) to about 201F degrees within 2 to 3 minutes after starting engine, while oil temperature is rising like it normally does. At this point, the oil is only around 99F degrees but the coolant is all the way up to 201F!
After about 10 minutes, oil is about 163F and coolant is 183F. After 15 minutes, both have stabilized to 216F coolant and 228F oil and operates like it normally does from there. My concern is, why suddenly the *coolant* temperature is erratic and suddenly rises much much faster, never having done this before. No lights or error messages have appeared thus far.
Richard
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06-09-2022, 11:35 PM
#2
Likely an issue with the thermostat in the coolant line remaining closed too long.
06-09-2022, 11:53 PM
#3
22 GT4 here and I’ve seen the same behavior in mine. I think it’s just the block heating up before the water pump kicks on. Every time I’ve seen it spike, it then cools down drastically and immediately. The car then continues to warm up and stabilize.
8,400 miles on mine so far and no overheating or bad stuff yet.
8,400 miles on mine so far and no overheating or bad stuff yet.
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Richardkun (06-09-2022)
06-10-2022, 08:32 AM
#4
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Normal to see water temp rise much quicker than oil temp by design. Thermostat closes when cold and coolant doesn't circulate until novo warms up, which can happen quickly especially as outside temps are higher now. Whereas oil is always circulating.
Both my cars behave this way. only difference is the Cayman warms up much faster then my GT350. The oil temp in that takes FOREVER just to hit 170 while head temp hits 199 very quickly.
Both my cars behave this way. only difference is the Cayman warms up much faster then my GT350. The oil temp in that takes FOREVER just to hit 170 while head temp hits 199 very quickly.
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06-13-2022, 04:58 PM
#5
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Man, my water temp regularly runs 221F. Always has. I asked the dealership, as this is considerably higher than my GT3 in the same conditions, and was told these engines run hotter for emissions purposes.
Last edited by Sean in Texas; 06-13-2022 at 05:00 PM.
06-14-2022, 08:33 AM
#7
I’m trying to figure out how my water temp stays at a constant 194 degrees when warmed up and never changes, not even by a degree, even when sitting in traffic! Must be some amazing airflow/water management going on!
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06-14-2022, 11:26 AM
#8
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Edited note for clarity based on comments below: I'm referring to the PDK Sport mode in the GT PDK cars or the Sport modes in the other models in this sub-forum.
Without Sport mode the temperatures rise up into the 220s for better emissions compliance while Sport mode drops the ECU's targeted temperatures into the 190s and low 200s for better performance.
I'm enough of a nerd that even when I've been out driving "gently" in the local area in Normal mode and the engine temperature is high, a few minutes before I get home I'll enable Sport mode just to cool off the engine a little more before I park it in the garage. The result is probably miniscule but our garage can get so hot in the Texas summer I figure its worth a button tap (it's on the sunward side of the house) .
As to OP's original question that is actually a desirable behavior - the ECU is trying to bring the engine up to full operating temperature as soon as possible for better emissions and longevity. The coolant "thermostat", which is actually an ECU sensor allowing the ECU to control cooling valves, is just doing its job.
Last edited by StormRune; 06-14-2022 at 08:29 PM.
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06-14-2022, 11:38 AM
#9
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Deleted after reading @StormRune post.
So is it worth leaving the car in Normal mode until warmed up? I normally go right into Individual (which is basically Sport+ with Sport throttle mapping).
So is it worth leaving the car in Normal mode until warmed up? I normally go right into Individual (which is basically Sport+ with Sport throttle mapping).
Last edited by AdamIsAdam; 06-14-2022 at 11:45 AM.
06-14-2022, 11:43 AM
#10
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There is no “Sport” mode in GT cars. GT cars normal steady state water temp is 221 for emissions.
GT with PDK Sport selected lowers this to 205 steady state.
Load up a GT car (either trans) and the e-stat changes parameters and you’ll see a rapid decline to 183.
OP, I have a 2021 Spyder…your observations are normal.
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06-14-2022, 04:54 PM
#11
I'll bet that Sean is usually running without Sport mode enabled and Growler is normally running with Sport mode enabled.
Without Sport mode the temperatures rise up into the 220s for better emissions compliance while Sport mode drops the ECU's targeted temperatures into the 190s and low 200s for better performance.
I'm enough of a nerd that even when I've been out driving "gently" in the local area in Normal mode and the engine temperature is high, a few minutes before I get home I'll enable Sport mode just to cool off the engine a little more before I park it in the garage. The result is probably miniscule but our garage can get so hot in the Texas summer I figure its worth a button tap (it's on the sunward side of the house) .
As to OP's original question that is actually a desirable behavior - the ECU is trying to bring the engine up to full operating temperature as soon as possible for better emissions and longevity. The coolant "thermostat", which is actually an ECU sensor allowing the ECU to control cooling valves, is just doing its job.
Without Sport mode the temperatures rise up into the 220s for better emissions compliance while Sport mode drops the ECU's targeted temperatures into the 190s and low 200s for better performance.
I'm enough of a nerd that even when I've been out driving "gently" in the local area in Normal mode and the engine temperature is high, a few minutes before I get home I'll enable Sport mode just to cool off the engine a little more before I park it in the garage. The result is probably miniscule but our garage can get so hot in the Texas summer I figure its worth a button tap (it's on the sunward side of the house) .
As to OP's original question that is actually a desirable behavior - the ECU is trying to bring the engine up to full operating temperature as soon as possible for better emissions and longevity. The coolant "thermostat", which is actually an ECU sensor allowing the ECU to control cooling valves, is just doing its job.
06-14-2022, 05:02 PM
#12
Rennlist Member
Hard to tell from above as there are readout differences between a GT and GTS. GT cars report accurately.
There is no “Sport” mode in GT cars. GT cars normal steady state water temp is 221 for emissions.
GT with PDK Sport selected lowers this to 205 steady state.
Load up a GT car (either trans) and the e-stat changes parameters and you’ll see a rapid decline to 183.
OP, I have a 2021 Spyder…your observations are normal.
There is no “Sport” mode in GT cars. GT cars normal steady state water temp is 221 for emissions.
GT with PDK Sport selected lowers this to 205 steady state.
Load up a GT car (either trans) and the e-stat changes parameters and you’ll see a rapid decline to 183.
OP, I have a 2021 Spyder…your observations are normal.
I was like, there's a SPORT mode? TWO F**KING YEARS AND YOU DIDN'T KNOW THERE WAS A SPORT MODE YOU IDIOT!?!?!?!?
It's a GT car, and this one has never been to the track.
Last edited by Sean in Texas; 06-14-2022 at 05:04 PM.
08-01-2022, 05:42 PM
#13
First time poster. I have a 2022 718 Spyder. Car now has 1960 miles on it (almost there!). I have always monitored coolant/oil temp upon start up and have always seen both temperatures rise together, usually taking about 10-15mins of sub 3k rpms to warm up to operating temperature.
The last two drives however, coolant temperature spikes (from cold start) to about 201F degrees within 2 to 3 minutes after starting engine, while oil temperature is rising like it normally does. At this point, the oil is only around 99F degrees but the coolant is all the way up to 201F!
After about 10 minutes, oil is about 163F and coolant is 183F. After 15 minutes, both have stabilized to 216F coolant and 228F oil and operates like it normally does from there. My concern is, why suddenly the *coolant* temperature is erratic and suddenly rises much much faster, never having done this before. No lights or error messages have appeared thus far.
Richard
The last two drives however, coolant temperature spikes (from cold start) to about 201F degrees within 2 to 3 minutes after starting engine, while oil temperature is rising like it normally does. At this point, the oil is only around 99F degrees but the coolant is all the way up to 201F!
After about 10 minutes, oil is about 163F and coolant is 183F. After 15 minutes, both have stabilized to 216F coolant and 228F oil and operates like it normally does from there. My concern is, why suddenly the *coolant* temperature is erratic and suddenly rises much much faster, never having done this before. No lights or error messages have appeared thus far.
Richard
FYI this is markedly different behavior than prior - and on all my p-cars, I watch the temps, pressures religiously as I want to know if something is going south before it craters! LOL
Last edited by loneregister; 08-01-2022 at 05:46 PM.
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Richardkun (08-01-2022)
08-01-2022, 11:05 PM
#14
Mine was just towed in for a very similar situation. Water temp rises to 194F within 60 seconds of starting the engine. Oil temp does not rise in sync with this water temp rise. It's been towed into Scottsdale Porsche today, and we'll see what happens. (2019, 718 GTS - purchased new Oct 2020)
FYI this is markedly different behavior than prior - and on all my p-cars, I watch the temps, pressures religiously as I want to know if something is going south before it craters! LOL
FYI this is markedly different behavior than prior - and on all my p-cars, I watch the temps, pressures religiously as I want to know if something is going south before it craters! LOL
08-01-2022, 11:26 PM
#15
Burning Brakes
Mine was just towed in for a very similar situation. Water temp rises to 194F within 60 seconds of starting the engine. Oil temp does not rise in sync with this water temp rise. It's been towed into Scottsdale Porsche today, and we'll see what happens. (2019, 718 GTS - purchased new Oct 2020)
FYI this is markedly different behavior than prior - and on all my p-cars, I watch the temps, pressures religiously as I want to know if something is going south before it craters! LOL
FYI this is markedly different behavior than prior - and on all my p-cars, I watch the temps, pressures religiously as I want to know if something is going south before it craters! LOL
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Richardkun (08-02-2022)