Honda Civic “01-05”Faulty Cooling Fans causing overheating. Troubleshooting

Fans not operating causing overheating repair video
my-store-10694...

[@gregash7683]

Perfect video, explained everything! Thanks!

[@treybodkin]

Thought maybe I was low on refrigerant thats why my AC wasn't coming on. Thankfully I watched your video and found out before wasting time flushing and filling my AC! Saved the day!

[@DreRamirez92]

A little bit of coolant my ass lmao 😂. Bro I soaked the street like a motha

[@Gennifer03]

Thank you! This helped me so much!

[@frankdelao280]

The fan would kick on then cut right off. Would not stay for long. I have replaced both the Coolant Temperature Sensor and Cooling Fan Switch, thermostat and radiator. I checked relays and fuse all seems to work including the fan. Last thing to check is the water pump.

[@HighRidgeHandyman]

Cooling switch could be faulty , also make sure you have enough coolant in the system. If coolant is low the switch won’t be totally submerged and will trip on and off. Open the cap when cold and make sure the coolant is to the top covering all internals. Good luck

[@SusieHaze]

Did this, replaced the sensor and still nothing. Paper clip trick turns in my fans, new sensor doesn’t. I was told it’s the fuse box needing replacement

[@HighRidgeHandyman]

Make sure you have the correct sensor for your vehicle. There are a few and both look the same. Also your temp has to be high in order to trip the sensor on. Change out the thermostat . Some thermostats have intermittent trouble

[@frankdelao280]

I did the same i replaced both sensors, fuse relays thermostat and fans are working except when the engine is running

[@SebaLohks]

Did you find out what was causing the problem ? Im having the same issue fan dont turn on. ​@frankdelao280

[@jennifercampbell1358]

First fan fuse was blown! But no fans once replaced. When I jumped the switch - both fans came on. Replaced switch - no fans. Had replaced thermostat prior to finding your video. Where would you suggest I look next? Thanks!

[@HighRidgeHandyman]

Try changing the cooling sensor switch.

[@maximobautista4854]

Having the same problem. Any suggestions to look next. I changed the switch temperature. Is it possible the engine temperature switch?

[@devanhart3209]

I’m having the same issue

[@repssrepps]

Any update I’m having the same issues and I’ve replaced the thermostat and the switch relays and fuses are good the paper clip by pass works new sensor switch doesn’t kick the fans on any suggestions?

[@swamiramdevshishyaparveenk5698]

Really thank you good blessings you

[@alexrockstar5069]

Thank you sr good video 💪🏼💪🏼

[@nb9536]

Great video, my fans turn on after 30 minutes and stay on for about 15 seconds. Also my water bottle gets filled up if I don't turn on AC. Why. thx

[@ivanska3099]

What if my fans come on even if the engine is cold?

[@HighRidgeHandyman]

@@ivanska3099 Sounds like the engine coolant temp sensor is reading incorrectly and could be defective Or you could have a bad fan relay causing the fan to run continuously. Good luck

[@ericksanchezHN]

Thanks.

[@gregenera2825]

So if the fans don't turn on when you do the paperclip connection, it's the fans.

[@HighRidgeHandyman]

Also check the fan fuses,wiring to the fans. If they are good then most likely the fans

[@matthewgonzalez7838]

Do this when the car is running?

[@BobbyMercer-xu9wi]

Jump two wires directly from the battery to the fan plug... They should come on if good, if not it's the fan for sure

[@cavanblack]

No code gets thrown for a coolant sensor ?

[@HighRidgeHandyman]

Testing for people who do not have or use scanning tools

[@cavanblack]

@@HighRidgeHandyman Great video too! I’ll reference this video.

[@griffenfranklin8576]

What the heck is the sensor called I tried getting it at the parts store and they couldn’t find it

[@HighRidgeHandyman]

It’s called a Coolant Temperature Sensor. If your parts store doesn’t know this find another store bro.

[@BobbyMercer-xu9wi]

It's the fan sensor switch

[@MAAT21519]

Thank you, the fan switch fixed my overheating situation.. but i have a question.. Is it a problem that my fans dont cut on automatically when i turn the AC on?

[@MAAT21519]

Okay now its getting hot again lol... this is so frustrating... my fans were just working properly when i changed the fan switch..now its beginning to overheat again because they arent kicking on again like they were... but when i jump the 2 pins it stays cool. Do you have any clue what the issue could be ?

[@HighRidgeHandyman]

Make sure your thermostat is operating 100% all the time and it’s not working intermittently and on its way out.

[@MAAT21519]

@@HighRidgeHandyman .. Will do...Should both hoses be hot?

[@kevinhancock4064]

​@@MAAT21519lower hose should be warm to hot but cooler than upper hose

[@eljefedejefes7469]

Only one of my fans is kicking on does that mean the whole assembly is faulty?

[@HighRidgeHandyman]

When trying the paper clip Try turning the ac on full when you test it. Both should come on. If not check wiring to 2nd fan that doesn’t work

[@mtsbaby414]

What’s that sensor called??

[@HighRidgeHandyman]

@@mtsbaby414 Coolant temperature sensor.

[@BobbyMercer-xu9wi]

Fan sensor switch, just bought one

[@hangman864]

2002 Honda Civic LX. Radiator Fan & AC Compressor Fan immediately turn on when I start the vehicle from cold. Would a bad relay? bad fuse? or sensor cause this issue? Fans stay on the whole time and it's causing the vehicle to overheat for some reason.

[@HighRidgeHandyman]

@@hangman864 not sure but try all you mentioned one at a time to eliminate the good and prove the bad

[@ryesters]

Replaced cooling fan switch yet fans still not coming on. Do I need to replace the thermostat now?

[@HighRidgeHandyman]

Did you jump the plug to make sure the fans work? If you did and the fans did not come on then check the wiring to the fan motors and the fan motored themselves. If fans work then I would definitely change out the thermostat. The first thing I do is change out the thermostat. Most of the time that’s was the issue is. Good luck be safe. If your not skilled enough ALWAYS HIRE A PROFESSIONAL. Good luck

[@ryesters]

@@HighRidgeHandyman Jumped plug and both fans come on. Will address thermostat next. And unfortunately don't have the proper equipment to drain the coolant. Thanks for the reply.

[@veemajeno7511]

My problem is my fans turn on and off with in a minute or so car stay hot any idea thank you

[@RobertMorris-l3l]

Is the water in the radiator bubbling when car is running its probably the head gasket

[@veemajeno7511]

@@RobertMorris-l3l thank you no not the problem I found out the person I got it from never burped It so it cause it to over heat now I drain it filled it up burped and now the problem gone

[@RobertMorris-l3l]

@@veemajeno7511 glad you found it out instead of having to replace the head gasket

[@veemajeno7511]

@@RobertMorris-l3l right thank you 🙏

[@adriansreviews100]

I tried using a 15/16 inch since l don’t have a 24 mm socket n it didn’t work. Did you use a deep socket 24mm socket or regular.??

[@HighRidgeHandyman]

Deep socket

[@adriansreviews100]

Thanks I ordered on Amazon the deep socket. Appreciate it.

[@brianyarborough1]

What if only driver side fan doesn’t work? Fuses are all fine

[@filiplochman4271]

Then the passenger side fan is broken.

[@RobertLopez-tu7ew]

Where can I get the pins from

[@tranium_pump]

Does this also cause when idle engine temp to rise and when driving engine temp to go down?

[@Forvs1]

having the same issue right now, either clogged radiator or not enough air flow from the fan. when you’re driving it’s pushing enough air

[@HenryFernandez-nh1jx]

@@Forvs1I’m having this exact problem!!!! Someone pls respond to me if you found a solution my car doesn’t over heat at all even tho the temp gauge shoots all the way up

[@Forvs1]

@@HenryFernandez-nh1jx i had a bad head gasket 😭😭😭

[@smittysmith6546]

I had an issue where the fan would kick on, then cut right off. Wouldn’t stay on for more than a second or two

[@frankdelao280]

Did you solved the problem

[@frankdelao280]

I got the same issue

[@northwestsuburbs20]

I'm bout to run these damn fans on a toggle to stay on when im at a stop light to see if that's what cause the car to overheat slightly when at stop lights after driving on highway for 30 mins at 80-90mph

[@christine6606]

hello do you have to drain out the coolant? thanks

[@HighRidgeHandyman]

No need. Just top off when your complete if needed👍🏻

[@lemon_juice_gaming_7083]

My cars fans both turn on only when ac is on and one stays running when ac is off ?

[@glennjenkins2673]

One is an ac fan the other is a rad cooling fan, if your ac is off the ac fan isnt going to run

[@EricOberfeld]

what is the part number that you switched? im trying to buy that one but i think i got the wrong one because when i put the new piece on the fans don't turn on. however, the fans do work because we tested before getting to buy the new senser.

[@ryesters]

Same problem. I am pretty confident I bought the correct sensor.

[@HighRidgeHandyman]

shop.advanceautoparts.com/p/carquest-premium-coolant-temp-switch-aca1517/12541596-P

[@trewten5579]

The after market I bought turns the fans on at a hotter temp. example the factory original turns fans on at 207° and the aftermarket would turn fans on at 225° didn't like that so took it back.

[@javier-m75]

i did all that. even jumped the fans so they stay on all the time and still the car is overheating

[@yonis99999]

same here. have you fixed it?

[@tylerbehrends3304]

Blown head gasket my friend

[@garyenwards1608]

How did you jump it so the fans are always on?

[@angelsandoval9346]

Only one fan comes on

[@HighRidgeHandyman]

One is for the temp coolant and the other is for AC. Drivers side id engine coolant and the passenger side for AC. Which ever isn’t working check that fuse and relay.

[@MichaelGarza-r5j]

@@HighRidgeHandyman Did the paper clip the ac fan kicked on but the other didn’t I checked the wiring looks good but what else could be the problem