Bad Coolant Temperature Sensor Symptoms

How do you know coolant temperature sensor is bad? What are symptoms? In this video, I will explain every single signs you should pay attention to. For example, overheating is a common signs and CTS such as circuit high and circuit low are also another common problem.

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[iveyhealth]

He forgot to mention, when your radiator coolant fan runs continuously, even when your vehicle is shut off, it could be your coolant temperature sensor.

[audiluvr]

car was running cold, (gauge would show cold when engine is warm) radiator fans blowing like crazy, rough idle, coolant leaking from sensor clip, got a new sensor from my local store for $30 for a euro sport sedan and it took me about 10-20min to replace (given i have 0 room to work on an audi but it’s better than removing any screws hoses or clamps)
typically should be a 3 min job
had the same part on there last time and got a lifetime warranty on it. lasted me roughly 25k miles.
infinite part glitch irl
thanks for the help

[JAI]

I HAD A COOLANT TEMP CODE, PLUS OVERHEATING, FOUND THE ELECTICAL CONNECTOR WAS BROKEN, REPLACED CONNECTOR CLEAR CODE GOOD TO GO

[MrCraigy]

Exactly what I was looking for, thank you my friend.

[SalamHerbs-dbnt]

Thank you for the best auto videos on YouTube. I hope more and more people subscribe to your channel.

[sertlilg]

this Guy is a Legend any issues you have he have a video for it 👍

[kylebainter]

Thank you! 04 F150 4.6L 2wd and was on my way to Home Depot and looked down and noticed my temp guage was cold, and when I pulled in to Depot it stalled and had to crank, then fully depress the pedal (which I think stops the fuel injectors from spraying) and same start condition with high idle and trying to pull at a stop light. I got my scanner and it's not super fancy but reads codes and up popped coolant temp sensor or CHT high circuit and that was the same reading on a cold engine in my Honda accord so I put 2 and 2 together, and about to replace the sensor. Could use a coolant drain and fill as well. Bought 8 yrs ago with 134k, and at almost 167k 33k in 8 yrs not too bad and everything else has already happened to it. Blew out the #1 cylinder, Overdrive servo piston and snap ring replaced, etc. Love my truck tho, it's my audio project now. Thanx for the thorough information 👍

[charleshalsey]

Great job explaining it I had a few of those symptoms so I changed my sensor out

[djmono]

My man! You are a legend. Thank you for your' to the point' info, it really helps.

[psalmsayer]

Mate thank you you answered all my questions you are a legend

[bccapone]

your videos are really helpful thank you, when its at normal running temp my temperature gauge moves down rapidly a few millimetres while driving and then back up again but fans still kick in like normal, it feels electrical from how fast it goes up and down . any ideas what it could be

[magmasunburst]

The car itself is not giving the engine light on but the little handheld scanner I just bought is showing that error code. I had some problems with some coils and plugs and not having reset the idle after I unhook the battery. I had a bunch of coolant that I just poured into the reservoir without measuring it correctly with some water I put in. That's the only coolant thing that I could see having happened except that I drove with the engine light on quite a bit and most of the coolant was gone but it didn't overheat.

[RuiCruz-be]

Thank you for the explanation, very helpful

[shiverleah]

Can I use a multimeter to test the ECT sensor or is it trial and error? Can you tell me if it’s possible to determine whether it’s the sensor or the wire/connection issue?

[DarkWaterEva]

Very appreciate this video I suspect I'm having a CTS problem.

[Eurospec]

Excellent video bro, you really break it down into a great detail. I replaced my thermo fan switch on my radiator for my VR6 with a low temp one and ever since that I noticed that the fan does not come on after the car is turned off after a long drive. Will this cause damage or coolant leaks?
What could it possibly be?

[MrJamesfree]

i have a 2005 chevy its doing the same thing wht your saying im glad you are on here thanks

[wadeephodobanda]

Thank for your info my concern is that I replaced the cooler sensor but my spark plugs keep on getting wet and the engine idle is rough!!! What could be the problem oh not forgetting it stall's or there's no power while driving

[tomas]

A few weeks back I had the check engine light come on; it was somewhat cold outside (-18C). I was in a bit of a hurry and had only had the engine block heater on for about an hour when I as per usual started the car, got outside to unplug the outlet and noticed something off with the sound from the engine. I got back in the car and saw the check engine light lit. Plugged in my OBD-reader and got code P011600. It turns out the computer went into some sort of fail-safe mode and turned the radiator fan to full blast in case the engine was running hot. I drove the 10 min ride to where I was going and noticed that the temp gauge increased at a normal rate. The AC worked as it should and warmed up the coupé on the ride so I figured the thermostat should be functioning all right. Cleared the error code and that was that; the car operated as normal.

A few days later the code came back and once more I cleared it. I ordered a replacement sensor but the error has not occurred again. The freeze frame showed that the sensor had reported a coolant temp of -40C which is nonsense since the ambient temperature hasn't yet gone below -20C this winter. I figure I'll wait and see, if it happens again I'll replace the sensor. I drive a 2004 Chrysler 300M and thankfully, in spite of all it's questionable design (I'm looking at you, whoever made the call on the placement of the battery!) the sensor is easily accessible by just popping the hood.

Any thoughts?

[rogertalavera]

Thanks men for explaining all these things, , 👍