Checking accuracy of engine temp gauge.

[shadow76]

Has anyone done this by fitting an analog temp gauge directly to the cooling system?

If so, is there an accessible fitting on the engine to allow this temporarily ?
The dash temp gauge on a ‘24 hybrid seems slow to respond, particularly in colder temperatures.

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[SLJ]

I use a Scangauge II on my ecoboost for engine and transmission temp when towing but it's plugged into the OBD2 port under the dash.

 

[Ozarkbeard]

...The dash temp gauge on a ‘24 hybrid seems slow to respond, particularly in colder temperatures...

That's because the ICE is slow to warm up, particularly in colder temperatures.
Try initially driving with the drive mode in SPORT. It will run the ICE more and warmup will be faster.

 

[bgn]

I monitor engine coolant temp with Forscan. On the EcoBoost, I hit 4 bars on the dash at 180 degrees. It updates to 4 bars in about a second after I hit 180 degrees or above.

 

[The Real Maverick]

Has anyone done this by fitting an analog temp gauge directly to the cooling system?

If so, is there an accessible fitting on the engine to allow this temporarily ?
The dash temp gauge on a ‘24 hybrid seems slow to respond, particularly in colder temperatures.

I can corroborate the engine IS slow to warm up - primarily because it's not burning much gas - the point of owning a hybrid.

Mode really does not matter much.
Once the cold engine starts, it will always run until at least 120-122°F.
Always. It's in the program.

If you want the gas to come on instantly, just press the pedal hard. (Even in Park.)
Sport or tow mode will turn on the gas the moment the wheels start turning. But I don't think the speed of actually warming up is any different.

 

[801Maverick801]

Its pretty accurate.

 

[icegradner]

That's because the ICE is slow to warm up, particularly in colder temperatures.
Try initially driving with the drive mode in SPORT. It will run the ICE more and warmup will be faster.

If you hate your ICE, and don't want it to last, yes do this. Pushing higher revs on a cold engine, likely not the best move. If you really want the ICE to stay on, just run the heat at max temp.

 

[The Real Maverick]

Its pretty accurate.

The error in your post is: this gauge and the one built in get their information from the same "thermometer". Both will agree. Both could be correct; or both could be off by the same amount. The OP wants to know if anyone installed a second thermometer.

 

[801Maverick801]

The error in your post is: this gauge and the one built in get their information from the same "thermometer". Both will agree. Both could be correct; or both could be off by the same amount. The OP wants to know if anyone installed a second thermometer.

LOL. Yes lets all take the time to install secondary thermometers for every parameter. Engine Oil temp, Coolant temp, Tramsission fluid temp, PTU temp, RDU Temp, Ambient air temp. Should be quick and easy!

 

[801Maverick801]

The error in your post is: this gauge and the one built in get their information from the same "thermometer". Both will agree. Both could be correct; or both could be off by the same amount. The OP wants to know if anyone installed a second thermometer.

Also there is no "error" in my post. Just because the gauge is using the same data from the sensor, you can still have a discrepancy from the actual temp and what is shown on the gauge.

 

[The Real Maverick]

"you can still have a discrepancy from the actual temp and what is shown on the gauge."

Lol. Yes. I said that.

No offense. But I think you (still) missed the point.

The scangauge is no more accurate than the dash one. It could be called more "precise" having 1 degree increments whereas the dash does not have 1 degree increments.

Anyhoo no biggie.

 

[Geep]

I can corroborate the engine IS slow to warm up - primarily because it's not burning much gas - the point of owning a hybrid.

Mode really does not matter much.
Once the cold engine starts, it will always run until at least 120-122°F.
Always. It's in the program.

If you want the gas to come on instantly, just press the pedal hard. (Even in Park.)
Sport or tow mode will turn on the gas the moment the wheels start turning. But I don't think the speed of actually warming up is any different.

I always thought that ICE engines should run at 212F or over to evaporate any moisture that has accumulated in a cold engine?

 

[dochawk]

If so, is there an accessible fitting on the engine to allow this temporarily ?

I've never looked under the hood of one of these, but if nothing else, I suspect you could disconnect Ford's sensor to stick your own in, take your measurement, and put it back.

The catch is going to be finding a gauge that is more accurate than what Ford put in a new engine . . . and then which to believe.

 

[Meeka]

LOL. Yes lets all take the time to install secondary thermometers for every parameter. Engine Oil temp, Coolant temp, Tramsission fluid temp, PTU temp, RDU Temp, Ambient air temp. Should be quick and easy!

Glad it’s not just me!

 

[AVC]

I always thought that ICE engines should run at 212F or over to evaporate any moisture that has accumulated in a cold engine?

Water evaporation is not equal to water boiling (212F at sea level). Water will off-gas (evaporate) at any temp above surrounding dew point. It'll evaporate more rapidly at higher temps. A practical example is the steam you see when running hot tap water (not boiling, hopefully). It steams (off-gasses) as it goes from saturated high temp (the dew point in the pipe) to cooler ambient air and lower dew point. It remains a vapor until it gives up enough heat to condense again.

An engine at 120F will drive off moisture in the oil, albeit a 200F engine will do it faster.

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