2014 engine temp running hot.
Thread Starter
Cruising
Joined: Feb 2025
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Hey I've found that the analog is only accurate once the temp actually goes above 220. Basically once the digital gauge hits around the 180 mark the analog gauge will be at 220. The analog gauge will stay at 220 from that 180ish mark up to 220. Once the digital gauge is reading 220+ , the analog gauge accurately shows the temperature. I found all this out since I'm the OP of this thread and for a week or two was monitoring the digital and analog gauges like a hawk lol.
Basically, under normal operating conditions, the analog temp should not budge from 220 once it warms up.
Basically, under normal operating conditions, the analog temp should not budge from 220 once it warms up.
Melting Slicks
Joined: Jan 2017
Posts: 2,696
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From: CONCORD CA.
On the thermostat change, I went to one of 194°. Don't worry about me driving it, I've got over 7k miles on it since January (this is not my daily driver either.). I just find it odd to have two widely different temp readings.
Melting Slicks
Joined: Jan 2017
Posts: 2,696
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From: CONCORD CA.
While do find my analog gauge reading consistent with what you state, I'm having a hard time understanding why it would be reading this way. If it gets to a set point (in this case, 220°), and just stays there, what purpose does that serve? At that point, it is no longer a gauge.
Le Mans Master
Joined: Jun 2019
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From: Loveland
Why did you decide on the wrong temp thermostat? I don't understand why people are so freaked out that their car runs at a consistent temp. Isn't this how an engineer would design it? The coolant temp is modulated by the thermostat, as it should be, once the thermostat is fully open then of course the temp will raise from the set point of 220*. If the engineers wanted the "engine" temp to be coolant temp, I think they would have named it "coolant". All of the temps are run through the ECU, I believe they made the engine temp a combination of oil and coolant temp. I have researched this and even ask Chevrolet service reps what engine temp really is, nobody really knows.
Race Director
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From: Grapevine Tx
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Hey I've found that the analog is only accurate once the temp actually goes above 220. Basically once the digital gauge hits around the 180 mark the analog gauge will be at 220. The analog gauge will stay at 220 from that 180ish mark up to 220. Once the digital gauge is reading 220+ , the analog gauge accurately shows the temperature. I found all this out since I'm the OP of this thread and for a week or two was monitoring the digital and analog gauges like a hawk lol.
Basically, under normal operating conditions, the analog temp should not budge from 220 once it warms up.
Basically, under normal operating conditions, the analog temp should not budge from 220 once it warms up.
Sounds like that's what the 2014 gauge does.
Melting Slicks
Joined: Jan 2017
Posts: 2,696
Likes: 888
From: CONCORD CA.
How do you then explain the variance between the two readings? Why would one gauge (analog) limit out and stay and one temp, but the other gauge (digital) vary with driving conditions? The digital reading seems more inline with what I would expect to see. Regardless of the thermostat used (194° or 207°), once it opens, they are mostly irrelevant. Do both gauge readings come from the same ECT sensor? If so, then I'm even more confused.
Le Mans Master
Joined: Jun 2019
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From: Loveland
This is even more confusing. I disconnected the temp sensor at the front of the engine and both readings quit. I think this is because they both go through the ecu first. Thermostats also have a range of temps that they operate. They don't all of a sudden open at their spec number. I think when a thermostat has a spec of,,, let say, 207*, It will modulate at that temp to keep a constant temp. The full open temp will be a different temp, say 210*. Once the coolant gets to 210*, they will no longer modulate the temp. Also don't forget the temp reading that you see on the gauge is taken from a different spot than the thermostat. Also,,,, the 2014 temp sensor is in fact in a different location than the later years. This is why the 2014 stat is 207* and all of the later years is it 195*.
Why does everyone try to reinvent this engine?
Why does everyone try to reinvent this engine?
Melting Slicks
Joined: Jan 2017
Posts: 2,696
Likes: 888
From: CONCORD CA.
Other than the first time the gauge went to 250° degrees, I'm not too worried about the reading. For me though, having a gauge that reads only to and stays at one reading, would be the same as having a fuel gauge that always shows as being full. I would expect the gauge to display a variance, depending on driving conditions. When under a load or driving it hard, I would expect it to rise. Currently the analog gauge only shows 220° when fully warmed up (while the digital gauge reads correctly.) With that, it would appear to me to that the analog gauge useless.
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Le Mans Master
Joined: Jun 2019
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From: Loveland
All you have to do to see your temp go up and down is remove your thermostat. This will make you feel good again.
Me personally, when I see a constant temp I know everything is working as designed. If you see a coolant temp top out at 180* or 250*, you know something is wrong.
Me personally, when I see a constant temp I know everything is working as designed. If you see a coolant temp top out at 180* or 250*, you know something is wrong.
Race Director
Joined: Apr 2014
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From: North Texas
Other than the first time the gauge went to 250° degrees, I'm not too worried about the reading. For me though, having a gauge that reads only to and stays at one reading, would be the same as having a fuel gauge that always shows as being full. I would expect the gauge to display a variance, depending on driving conditions. When under a load or driving it hard, I would expect it to rise. Currently the analog gauge only shows 220° when fully warmed up (while the digital gauge reads correctly.) With that, it would appear to me to that the analog gauge useless.
Melting Slicks
Joined: Jan 2017
Posts: 2,696
Likes: 888
From: CONCORD CA.
That's my point, if the analog gauge (once up to temp), never changes, it basically has no value. It wasn't until yesterday that I finally found the screen combination that showed the digital coolant temp gauge. Seeing that now, makes me feel better coolant temp I'm seeing. I'd rather not have to have this arrangement always showing though, as it is not the best-looking visual display. I'll just access once in a while from now on.
Race Director
Joined: Feb 2001
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From: Grapevine Tx
2018 C3 of Year Finalist
2016 C3 of the Year Finalist
How do you then explain the variance between the two readings? Why would one gauge (analog) limit out and stay and one temp, but the other gauge (digital) vary with driving conditions? The digital reading seems more inline with what I would expect to see. Regardless of the thermostat used (194° or 207°), once it opens, they are mostly irrelevant. Do both gauge readings come from the same ECT sensor? If so, then I'm even more confused.
As far as I'm concerned, "engine temp" is coolant temp. Not going to overthink it.
Melting Slicks
Joined: Jan 2017
Posts: 2,696
Likes: 888
From: CONCORD CA.