As comments have stated, this video demonstrates the replacement of the Coolant Fan Switch, rather than the Temperature Sensor; the difference between the two can be seen clearly on the photos of this Amazon page: www.amazon.com/37760-P00-003-37870-PJ7-003-Coolant-Switch-Temperature/dp/B01ASUHJ2S , so please be advised when you look for a replacement part.
I've seen several videos in which the sensors are confused. The fan sensor switch is on the bottom of the radiator. The coolant temperature sensor is on the driver side of the engine block.
for everyone saying that he's wrong and that it's called the coolant fan switch, you're incorrect. i have an 06 Acura TSX and this sensor is called the ECT (engine coolant temperature) SENSOR 2 HIGH CIRCUIT. code : P2185. though it ultimately does determine if the fans turn on/off, is not called the radiator fan switch. all you know-it-all DIY mechanics are the reason it took me 2X longer to find this part. anyway, thanks kid. your father is a very proud man.
Its the coolant temperature switch, also referred to by some as radiator fan switch, but it is a CTS, coolant temp switch. He infact also refers to it as the temperature switch at the begginning of the video. The ECT sensor (engine coolant temparture sensor) is located on the back side of the cylinder head below the exhaust cam position sensor. if ur looking at the cylinder head from the driver side, you will be looking at the back side of the head, look at the bottom right side of the head, and there you will find the ECT sensor. Think about what its called, ENGINE COOLANT TEMPERATURE SENSOR. You think a sensor with the name "ENGINE" referred to wil be located anywhere else BUT the ACTUAL ENGINE?????. Nope. Manufacturers dont have skewed names. They are very literal in naming as to comply with universal naming schemes, as to be serviceable by technicians worldwide. And general rule of thumb, a sensor will be designed with it having to be directly in the path of what its designed to sense, example: Air temp sensor, will have a probe that sits in the path of intake air, coolant temp sensor has a probe that sits in pathway of a coolant passage in the cylinder head, some vehicles will have it on the thermostat housing, once again in the pathway of coolant flow. Oxygen sensors sits in 2 places, 1 on the exhaust manifold, and one on the exhaust piping after the catalytic convertor, both sensors will have a probe that sits in the pathway of the exhaust gases. A switch doesnt need to sit directly in the pathway, but rather just in the general area to pickup a differential in resistance, and that in turn will tell the ECU/ECM to turn on a designated/corresponding component, in this case the radiator cooling fan relays, which in turn turns on the fan. The sensor and switch both work in same principal, being resistors, as the temperature increases/decreases the sensor and switch both increases or decrease resistance value that registers in a voltage range from 0.1 to 5.0volts DC. and the ECM engine control module determines the temperature range based of the voltage readout. The sensor has to be more precise as the engine determines whether to advance timing, or retard it, to avoid both engine knock, as well as running state for cold starts, and operational temperature. the switch is literally just to determine when to turn on or off the fan. For instance after parking on a hot summer day, after a long road trip, and the engine happens to be in the middle of heat cycling so the hot coolant exchanged from the engine to the radiator as the thermostat is open, and the cooled coolant replaces the hot coolant, the ECU will turn on the radiator fans to cool it down as the temp will continue to increase after being parked since no longer moving forward so no air passing through the radiator. hope this explained the differences and some information added to your arsenal for future use. Also, good to have confidence in yourself, but seriously do plenty of research before calling out everyone in the comment section. Cross reference the source of information with multiple sources and ween out the lesser generalized bits. the internet is full of these tidbits that pass along wrong information as the correct info, and most of the time its unknowingly. Have to be vigilant with it. Take Care :D
Great explanation, especially in the description. I was about to comment and say why not just go from the bottom, but now I understand you’re also replacing the motor. Good for you
I never write yt comments. Ever. but in this case i have to. PLEASE make more videos young sir, this is by far the most informative and succinct diy repair vid i have ever seen. Your dad should be proud. Keep up the good work. Respect from a 30-y.o. amateur.
Thank you, I really appreciate your comment! I will strive to be as informative as possible, learn from my mistakes, and continue helping people out! Thanks for watching!
You will be a great mechanic if you stick with it. Kudos to your dad! Working on cars can actually translate to making money in the real world! All you youngsters on Instagram or playing Fortnite take notes-
I keep getting a code at orileys that it’s the temp sensor. Should I test to see if it’s good or do I just change out. What would you recommend or anybody. Thanks for your help
Í have a question I have a ver 02 the fans dont Star i turn on the ac and dont Star fuses ok relays are ok I change the cooling sensor of radiador and dont Star I did conect the fans direct and they Star thats the only way they Star. thanks
That is NOT the engine coolant temp sensor on the 2003 Accord. It is the radiator fan switch and is much larger than the ECT. It is actually located atop the engine block going into it at the rear of the motor. Looking at the front of the engine stick your arm back behind the cylinder head and you'll feel it down low towards right side - and the wiring harness that it connects to. I cannot find a diagram showing its exact location or I would post it.
sorry David, you're wrong. (assumin it's the same as my 06 Acura TSX) this part IS called ECT sensor 2 high circuit. code: p2185. there's a reason why you couldn't find the diagram
My husband is replacing the radiator in a 2004 honda pilot he bought off Amazon and is confused on why the temperature measurement sensor will not fit in the new radiator. So he's putting it back in for now without connecting it
Both my fans on my 2003 honda accord aren't working. All fuses and relays seem to be fine and I hooked both fans up directly to the battery and the both work could this temperature sensor being bad explain why both of the fans aren't working??
That's one possibility. If both fans are not working maybe the culprit is no refrigerant in the AC compressor causing the low/high pressure sensor to disengage. Did you do anything with the AC system?
I like your young tenacity of doing your own work but you went overkill a bit on this job. I just did this job on 4 cyl 2007 accord, very simple... Drain radiator, then reach down from top of engine compartment and blindly disconnect electrical connector from sensor, blindly put socket on sensor and remove. (Make sure o-ring came out with old sensor) It took a total of 2 minutes to replace after draining radiator.
is it easy to reach the sensor from the top, but you just can't see it? i will attempt to do this myself. do you have the part # of the sensor you used?
I replaced the radiator on my 2007 Accord EX-L. The old radiator had a temperature “sensor”-small long rod and a small 10 mm threaded hole like yours. The new radiator I received has the larger 18 mm threaded hole that fits the item shown in this video which is a radiator cooling fan “switch.” Apparently Honda has two types of radiators that vary in this one aspect. These two things work differently the smaller temperature sensor probe measures the change in voltage which calculates the change in temperature. The larger coolant switch is only on/off open/closed; it starts the radiator fan when the coolant is hot. They are not interchangeable. The electrical connectors are different too. Go to rockauto.com or Amazon.com and search for temperature sensor. There is an additional temperature sensor on the engine hidden under where the heater hoses connect on the 2.4 L engine. That engine sensor is identical in size, shape, and connector to the radiator temperature sensor-the only difference is the engine one's plastic end is white and the radiator one is black. I believe they are interchangeable and identical, but they may not send the same voltage signal to the ECM. Or the radiator one with the black end works the same as the cooling fan switch in this video.
That coolant sensor you replaced is much larger than one I have on my 07 accord 4cyl mine is much small with a long point after the threads.I seen one you took out and I purchased it and it doesn’t fit. Maybe I do or u have aftermarket radiator.Has anyone else had this problem?
I replaced the radiator on my 2007 Accord EX-L. The old radiator had a temperature “sensor”-small long rod and a small 10 mm threaded hole. The new radiator I received has the larger 18 mm threaded hole that fits the item shown in this video which is a radiator coolant“switch.” Apparently Honda has two types of radiators that vary in this one aspect. These two things work differently the smaller temperature sensor probe measures the change in voltage which calculates the change in temperature. The larger coolant switch is only on/off open/closed; it starts the radiator fan when the coolant is hot. They are not interchangeable. The electrical connectors are different too. Go to rockauto.com or Amazon.com and search for temperature sensor. There is an additional temperature sensor on the engine hidden under where the heater hoses connect on the 2.4 L engine. That engine sensor is identical in size, shape, and connector to the radiator temperature sensor-the only difference is the plastic end is white and the radiator one is black. I believe they are interchangeable and identical, but they may not send the same voltage signal to the ECM.
Radiator Fan Switch 37760-P00-004/37760-P00-003. You could buy them from dealership, auto part stores such as Advance Auto Parts, Autozone or O'Reilly, ebay or amazon, here's a cheap aftermarket one from Amazon.com: www.amazon.com/gp/product/B01FQX57DK/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
Here's a better one, a little bit more expensive: www.amazon.com/dp/B000CB21WC/ref=sxbs_sxwds-stvpv2_1?pf_rd_m=ATVPDKIKX0DER&pf_rd_p=6375e697-f226-4dbd-a63a-5ec697811ee1&pd_rd_wg=yhPrE&pf_rd_r=EP8EJKQMEWW03B8VD5SP&pf_rd_s=desktop-sx-bottom-slot&pf_rd_t=301&pd_rd_i=B000CB21WC&pd_rd_w=IzQo7&pf_rd_i=Dade+TS295+Radiator+Coolant+Fan+Temperature+Sensor+Switch+For+Honda+Civic+LX+Acura+1992-06+Radiator+Fan+Switch+37760-P00-004%2F37760-P00-003&pd_rd_r=08b73e76-1b54-4912-9373-4707ea721286&ie=UTF8&qid=1540882882&sr=1
@@EyeOnAiman thanks a lot,i have a problem,the honda parts shows that the part no is 37870-raa-a01,do you know why www.hondapartsnow.com/genuine/honda~sensor~assy~37870-raa-a01.html?Vin=1HGCM56857A038986&Filter=(bt=4%2c126;et=2%2c7)&Location=radiator-l4-denso,3067363,9
please am having a gear problem with my Honda car accord Automatic, The Gear will not change until it get to 4000r/mins and the fuel consumption is high. we be glad if anyone can update me on how to solve the issue
I can do it without moving the fans or radiator. just go under the car and remove engine cover remove 6 plastic clips and you’ll be able to see the sensor
Says it's easier from the top then goes on to mention how much you have to remove😅😂😂 def going in from the bottom if the plastic gaurd is all you have to remove lol
Bro u could have just jacked the car up and grabbed that sensor from the bottom by just removing the bottom dust cover would have took you 10min lol. Your smart but not for this job.. remember work smarter not harder u clearly did that backwards..
As comments have stated, this video demonstrates the replacement of the Coolant Fan Switch, rather than the Temperature Sensor; the difference between the two can be seen clearly on the photos of this Amazon page: www.amazon.com/37760-P00-003-37870-PJ7-003-Coolant-Switch-Temperature/dp/B01ASUHJ2S , so please be advised when you look for a replacement part.
-
I've seen several videos in which the sensors are confused. The fan sensor switch is on the bottom of the radiator. The coolant temperature sensor is on the driver side of the engine block.
for everyone saying that he's wrong and that it's called the coolant fan switch, you're incorrect. i have an 06 Acura TSX and this sensor is called the ECT (engine coolant temperature) SENSOR 2 HIGH CIRCUIT. code : P2185.
though it ultimately does determine if the fans turn on/off, is not called the radiator fan switch. all you know-it-all DIY mechanics are the reason it took me 2X longer to find this part.
anyway, thanks kid. your father is a very proud man.
Its the coolant temperature switch, also referred to by some as radiator fan switch, but it is a CTS, coolant temp switch. He infact also refers to it as the temperature switch at the begginning of the video. The ECT sensor (engine coolant temparture sensor) is located on the back side of the cylinder head below the exhaust cam position sensor. if ur looking at the cylinder head from the driver side, you will be looking at the back side of the head, look at the bottom right side of the head, and there you will find the ECT sensor. Think about what its called, ENGINE COOLANT TEMPERATURE SENSOR. You think a sensor with the name "ENGINE" referred to wil be located anywhere else BUT the ACTUAL ENGINE?????. Nope. Manufacturers dont have skewed names. They are very literal in naming as to comply with universal naming schemes, as to be serviceable by technicians worldwide. And general rule of thumb, a sensor will be designed with it having to be directly in the path of what its designed to sense, example: Air temp sensor, will have a probe that sits in the path of intake air, coolant temp sensor has a probe that sits in pathway of a coolant passage in the cylinder head, some vehicles will have it on the thermostat housing, once again in the pathway of coolant flow. Oxygen sensors sits in 2 places, 1 on the exhaust manifold, and one on the exhaust piping after the catalytic convertor, both sensors will have a probe that sits in the pathway of the exhaust gases. A switch doesnt need to sit directly in the pathway, but rather just in the general area to pickup a differential in resistance, and that in turn will tell the ECU/ECM to turn on a designated/corresponding component, in this case the radiator cooling fan relays, which in turn turns on the fan. The sensor and switch both work in same principal, being resistors, as the temperature increases/decreases the sensor and switch both increases or decrease resistance value that registers in a voltage range from 0.1 to 5.0volts DC. and the ECM engine control module determines the temperature range based of the voltage readout. The sensor has to be more precise as the engine determines whether to advance timing, or retard it, to avoid both engine knock, as well as running state for cold starts, and operational temperature. the switch is literally just to determine when to turn on or off the fan. For instance after parking on a hot summer day, after a long road trip, and the engine happens to be in the middle of heat cycling so the hot coolant exchanged from the engine to the radiator as the thermostat is open, and the cooled coolant replaces the hot coolant, the ECU will turn on the radiator fans to cool it down as the temp will continue to increase after being parked since no longer moving forward so no air passing through the radiator. hope this explained the differences and some information added to your arsenal for future use. Also, good to have confidence in yourself, but seriously do plenty of research before calling out everyone in the comment section. Cross reference the source of information with multiple sources and ween out the lesser generalized bits. the internet is full of these tidbits that pass along wrong information as the correct info, and most of the time its unknowingly. Have to be vigilant with it. Take Care :D
Great explanation, especially in the description. I was about to comment and say why not just go from the bottom, but now I understand you’re also replacing the motor. Good for you
I never write yt comments. Ever. but in this case i have to.
PLEASE make more videos young sir, this is by far the most informative and succinct diy repair vid i have ever seen. Your dad should be proud. Keep up the good work.
Respect from a 30-y.o. amateur.
Thank you, I really appreciate your comment! I will strive to be as informative as possible, learn from my mistakes, and continue helping people out! Thanks for watching!
You will be a great mechanic if you stick with it. Kudos to your dad! Working on cars can actually translate to making money in the real world! All you youngsters on Instagram or playing Fortnite take notes-
If only i had your energy and smaller hands, sir. Thanks
Thank you 🙏 so much for sharing this video! You help me a lot
In a pinch.. Just loop a piece of metal from one slit to the other in the connector. The fan will stay on long as the key is turned.
Excelente video muchas Gracias por compartir tu experiencia con nosotros así poder aprender un poco
Thanks for viewing!
I keep getting a code at orileys that it’s the temp sensor. Should I test to see if it’s good or do I just change out. What would you recommend or anybody. Thanks for your help
Would this be the issue if I've replaced the thermostat and the check engine light came back on and my gage is working?
Thank you for your help God bless you.
seems like a smart kid. great video
Good video
Where is localized the 2 temperatures sensor? My car is Acura TSX 2004. Thank
My air intake DONT have that top connector. Is it suppose to have anything on top? I have a 04 Accord 2.4 ex
My 2007 Honda accord does not have that sensor you are showing but instead it has this sensor on the radiator.....37870-RAA-A01
Í have a question
I have a ver 02
the fans dont Star
i turn on the ac and dont Star
fuses ok
relays are ok
I change the cooling sensor of radiador and dont Star
I did conect the fans direct and they Star thats the only way they Star.
thanks
Great job man
can this sensor cause the gas pedal to loose power
That is NOT the engine coolant temp sensor on the 2003 Accord. It is the radiator fan switch and is much larger than the ECT. It is actually located atop the engine block going into it at the rear of the motor. Looking at the front of the engine stick your arm back behind the cylinder head and you'll feel it down low towards right side - and the wiring harness that it connects to. I cannot find a diagram showing its exact location or I would post it.
Thank you, I will make sure people know!
sorry David, you're wrong. (assumin it's the same as my 06 Acura TSX) this part IS called ECT sensor 2 high circuit. code: p2185. there's a reason why you couldn't find the diagram
Actually the radiator fan switch is different on the 2006/2007 models, & possibly the 2005 as well.
why do your temp sensor look different than mine? my sensor has a sli. tip end that goes in radiator and your is like bigger.
Because it ia not temperature sensor.It is call Fan Switch sensor.Good luck🙏
@@oscargonzalez8518 ooih gotcha
Why did you not just take the under tray off instead of taking all that off from the top
you are the best
My husband is replacing the radiator in a 2004 honda pilot he bought off Amazon and is confused on why the temperature measurement sensor will not fit in the new radiator. So he's putting it back in for now without connecting it
Great info. On my 04 v6 accord the driver's side fan does not turn on, what could it be??? The temperature sensor or the fan motor??
Start with your relays, then test fans, if both good then it might be the sensor
The Driver’s side fan is your Condenser fan which works when you turn the AC on. Check the relays and fuses for it first.
My fans turn on with my AC but never turn on when the car is at running temp and it cause the car to smoke but not over heat can it be this sensor
Both my fans on my 2003 honda accord aren't working. All fuses and relays seem to be fine and I hooked both fans up directly to the battery and the both work could this temperature sensor being bad explain why both of the fans aren't working??
That's one possibility. If both fans are not working maybe the culprit is no refrigerant in the AC compressor causing the low/high pressure sensor to disengage. Did you do anything with the AC system?
@@EyeOnAiman no I have not. What would you suggest doing first?
@@KZ-wk4xb did he ever reply???
I like your young tenacity of doing your own work but you went overkill a bit on this job. I just did this job on 4 cyl 2007 accord, very simple... Drain radiator, then reach down from top of engine compartment and blindly disconnect electrical connector from sensor, blindly put socket on sensor and remove. (Make sure o-ring came out with old sensor) It took a total of 2 minutes to replace after draining radiator.
is it easy to reach the sensor from the top, but you just can't see it? i will attempt to do this myself. do you have the part # of the sensor you used?
Hello, so my driver's side cooling fan does not turn on, could it be temperature sensor?????
ruclips.net/video/fKHng4GJUZY/видео.html
Good job!
Great video..very helpful 👌🏾
You don’t need remove the fans
just take off the sensor from the bottom and that’s it
Why does the sensor in my 2007 Accord look so different? It has a longer probe end and isn’t snubbed off like yours.
Again it is not temperature sensor.It is Faaan Switch Sensor.👍
I replaced the radiator on my 2007 Accord EX-L. The old radiator had a temperature “sensor”-small long rod and a small 10 mm threaded hole like yours. The new radiator I received has the larger 18 mm threaded hole that fits the item shown in this video which is a radiator cooling fan “switch.” Apparently Honda has two types of radiators that vary in this one aspect. These two things work differently the smaller temperature sensor probe measures the change in voltage which calculates the change in temperature. The larger coolant switch is only on/off open/closed; it starts the radiator fan when the coolant is hot. They are not interchangeable. The electrical connectors are different too. Go to rockauto.com or Amazon.com and search for temperature sensor. There is an additional temperature sensor on the engine hidden under where the heater hoses connect on the 2.4 L engine. That engine sensor is identical in size, shape, and connector to the radiator temperature sensor-the only difference is the engine one's plastic end is white and the radiator one is black. I believe they are interchangeable and identical, but they may not send the same voltage signal to the ECM. Or the radiator one with the black end works the same as the cooling fan switch in this video.
That's not the coolant temperature sensor, that's the radiator fan switch.
You're correct Miguel .
Thank you, I will let people know!
@@EyeOnAiman You're welcome. I used to think it the same thing too.
Hello, if you need the original part#37870-RAA-A01. For a 2007 Honda Accord LX 4cyl. Denso Radiator.
That coolant sensor you replaced is much larger than one I have on my 07 accord 4cyl mine is much small with a long point after the threads.I seen one you took out and I purchased it and it doesn’t fit.
Maybe I do or u have aftermarket radiator.Has anyone else had this problem?
I replaced the radiator on my 2007 Accord EX-L. The old radiator had a temperature “sensor”-small long rod and a small 10 mm threaded hole. The new radiator I received has the larger 18 mm threaded hole that fits the item shown in this video which is a radiator coolant“switch.” Apparently Honda has two types of radiators that vary in this one aspect. These two things work differently the smaller temperature sensor probe measures the change in voltage which calculates the change in temperature. The larger coolant switch is only on/off open/closed; it starts the radiator fan when the coolant is hot. They are not interchangeable. The electrical connectors are different too. Go to rockauto.com or Amazon.com and search for temperature sensor. There is an additional temperature sensor on the engine hidden under where the heater hoses connect on the 2.4 L engine. That engine sensor is identical in size, shape, and connector to the radiator temperature sensor-the only difference is the plastic end is white and the radiator one is black. I believe they are interchangeable and identical, but they may not send the same voltage signal to the ECM.
@@mplsfarmer thanks for the clarity it makes sense.I replaced both they had 10mm thread and returned the 18mm back to Amazon.
Very good
I need that part number cause for the life of me I can’t find one
do you know where i can buy this sensor,i really confuse about it
Radiator Fan Switch 37760-P00-004/37760-P00-003. You could buy them from dealership, auto part stores such as Advance Auto Parts, Autozone or O'Reilly, ebay or amazon, here's a cheap aftermarket one from Amazon.com: www.amazon.com/gp/product/B01FQX57DK/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
Here's a better one, a little bit more expensive: www.amazon.com/dp/B000CB21WC/ref=sxbs_sxwds-stvpv2_1?pf_rd_m=ATVPDKIKX0DER&pf_rd_p=6375e697-f226-4dbd-a63a-5ec697811ee1&pd_rd_wg=yhPrE&pf_rd_r=EP8EJKQMEWW03B8VD5SP&pf_rd_s=desktop-sx-bottom-slot&pf_rd_t=301&pd_rd_i=B000CB21WC&pd_rd_w=IzQo7&pf_rd_i=Dade+TS295+Radiator+Coolant+Fan+Temperature+Sensor+Switch+For+Honda+Civic+LX+Acura+1992-06+Radiator+Fan+Switch+37760-P00-004%2F37760-P00-003&pd_rd_r=08b73e76-1b54-4912-9373-4707ea721286&ie=UTF8&qid=1540882882&sr=1
@@EyeOnAiman thanks a lot,i have a problem,the honda parts shows that the part no is 37870-raa-a01,do you know why
www.hondapartsnow.com/genuine/honda~sensor~assy~37870-raa-a01.html?Vin=1HGCM56857A038986&Filter=(bt=4%2c126;et=2%2c7)&Location=radiator-l4-denso,3067363,9
Cool video
I have one but 6 cylinders and don't fine it
please am having a gear problem with my Honda car accord Automatic, The Gear will not change until it get to 4000r/mins and the fuel consumption is high. we be glad if anyone can update me on how to solve the issue
Replace the gear box
If its only one gear thats having trouble it could be a shift soleniod
Saya dari indonesia, saya mau nanya kalo switch thermo dimanya yah?
I can do it without moving the fans or radiator. just go under the car and remove engine cover remove 6 plastic clips and you’ll be able to see the sensor
It’s a 17mm socket. Not a 3/4
Will it be a 17mm socket on my 2005 accord too?
Says it's easier from the top then goes on to mention how much you have to remove😅😂😂 def going in from the bottom if the plastic gaurd is all you have to remove lol
Hello you orlando
i didnt take the fan shroud out to change mine 👀
Bro u could have just jacked the car up and grabbed that sensor from the bottom by just removing the bottom dust cover would have took you 10min lol. Your smart but not for this job.. remember work smarter not harder u clearly did that backwards..
Would I still need to drain radiator???