Ford Focus

[@terrymaloney3445]

The only video I could find to explain how to get this replaced. Thankyou!!

[@tbirdpimp07]

thanks i was wondering where the heck that sensor was. iwas watching mine with live data got up to 226 degrees no fans kicking in so i turned it off dash gauge never moved from center of dashto indicate overheating this video saved me some serious head scratching

[@kylerustywilliams]

Thank you for making this video. I have the same problem, and now I will be able to replace the head temp sensor with ease. I truly appreciate you making this video. I would like to state one issue I am finding with my Focus, and that is when I turn on the A/C, the fans are not coming on, or at least from what I can see the right side fan is not coming on. I checked the fuses and relays with a multimeter, and I checked the right side fan motor with jumper wires. All are good. The resistor connector looks burnt/melted. The resistor is not clean and shiny, but the coil is not burnt looking. I can follow up with you after I pull the head temp sensor and see if the fans come on as well as after I replace the head temp sensor. But this is my wife's vehicle and we cannot afford another one, so any help is appreciated.

[@lemesnil1]

Hey Eric!... Your friend is very lucky to have you around ... Your video really did help me out with my focus issue! Cheers man!

[@josehueso5911]

Same thing happened to me, auto parts gave a coolant sensor and never found it! Lol! I found out that the cylinder head temp sensor controls the fans!! Nice video by the way!👍👍👍

[@LisaSanders-q1q]

Same thing happen to me on my 2007 ford focus they gave me a short sensor coolant temp. Sensor what I need is a cylinder head temperature sensor. The video's on you tube are misleading, also the water pump was changed on this car and it started overheating again so we took the water pump off and part of it was missing, the part with the fan looking piece on it has this ever happen to anybody else?

[@pawel7875]

A lot of work for something that most likely was good. Good video for pointing the location of CHT sensor

[@quietwon8992]

Are you sure this controls the fan? Are both fans suppose to run when a.c. is off when it's working right? Because I thought 2nd fan is for the a.c..

[@ForestBunz]

Dude! Thanks! was looking all over for the bugger!

[@shaneallen8163]

Thank you so much for the upload of your video of a bad temp sensor,.

[@d.j.9961]

THANK U 4 SHOWING ME THE HEAD TEMP SENSOR LOCATION.I DIDNT KNOW ABOUT THAT.

[@chevchelios7342]

i have focus mk1 1.4l petrol...this cylinder head temperature sensor is located between sparkplug number 2 and 3.....u just need a 16mm long socket to get it out...

[@TheFirstBigBoy]

Did the temperature gauge word on the dash before you did this?

[@jorgeisaacnavarrete7287]

Sometimes the alternator is too tight to the base- to get it out and put it back on it is a good idea to loosen the three bolts that hold the alternator together- this will make the alternator to loosen its grip to the base- you can always tighten them up using an 8mm wrench- do this before you fully tighten the alternator to the base.

[@tomlampros4156]

Thank you! like others, I couldn't find the sensor. Even the dealer was stumped!

[@danielleloveland1055]

Thank you Thank you Thank you! Light at the end of the tunnel! Failed 4 emissions tests due to this one little part...

[@sstewart3759]

Hi, do you happen to know where the Idle air control valve is on this car? I have a 2004 and it is the same set up as this engine. It is difficult to find a good picture of the IAC whereabouts for this engine.

[@garycrombie9875]

Right underneath the throttle body under the plenum

[@d.j.9961]

IF U DIDNT FIND THE IAC VALVE, STAND AT THE DRIVER SIDE FRONT FENDER WITH HOOD OPEN, STANDING CLOSE TO THE WINDSHEILD,LOOK TOWARDS THE PASSENGER SIDE, BY STANDING ON THE DRIVER SIDE OF THE CAR,FRONT FENDER, LOOK AT THE INTAKE! THE AIC OR IAC VALVE IS BETWEEN THE INTAKE PLENTUM & THE BLOCK! YOU CAN SEE A WHITE TAG ON THE WIRING, EASIEST WAY TO GET TO IT IS FROM LAYING UNDER THE CAR & REACH UP BETWEEN THE INTAKE & BLOCK! IT HAS TWO 8MM BOLTS! I RECOMMEND JACKING THE CAR UP & SET IT ON JACK STANDS, DISCONNECT THE BATTERY!!! I CLEAN MY IDLE AIR CONTROLL VALVE EVERY FEW MONTHS! I LEAVE THE IAC PLUGED IN, GET UNDER THE CAR & UNBOLT IT, & PULL IT UP THREW USING THE WIRE HARNESS SOMETIMES BUT, IVE DONE IT SO MANY TIME'S YET, IT STILL A PAIN IN THE BUT!!! CLEAN IT WITH BRAKE CLEANER & Q-TIPS, LET DRY B4 RE-INSTALLING IT!!! KEEPING THE IAC VALVE, THROTTLE BODY, & MASS AIR FLOW SENSOR CLEAN,(MAF SENSOR IS LOCATED IN THE INTAKE TUBE) I CLEAN ALL WITH BRAKE CLEAN, & THEN DO A HARD RESET OF THE ECU BY DISCONNECTING THE NEG BATTERY CABLE, COVERING THE NEGATIVE BATTERY POST WITH A THICK TOWEL(NOT COVERING THE NEG BATTERY CABLE,JUST THE NEG POST) I CONNECT A JUMPER WIRE FROM MY DISCONNECTED NEGATIVE BATTERY CABLE TO THE POSITIVE BATTERY CABLE/BATTERY POST & LEAVE CONNECTED FOR SEVERAL MINUTES!!! I KNOW IT SOUNDS BAD BUT, "WHEN DONE CORRECTLY", IT DRAINS THE CAPASITORS IN THE ECU! THEN, AFTER A FEW MIN_5-10 MIN, DISCONNECT JUMPER WIRE & RECONNECT BATTERY THE CORRECT WAY & TURN THE IGNITION TO THE ON POSITION(DASH LIGHTS COME ON) LET SIT FOR 30 SEC _1 MIN, THEN START CAR & ALLOW CAR TO IDLE & ALLOW FOR A FULL DRIVE CYCLE= A FULL TANK OF GAS! I DO THIS EVERY TIME MY CAR DOESN'T WANT TO IDLE & IT FIXES IT RIGHT UP!!! HOPE IVE HELPED?

[@d.j.9961]

when I 1st got my fucus.i had the same issue with the barb on the heater core hose.drove me nuts.replaced thr thermo housing n everything b4 I finally saw it.i used a piece of copper tubing

[@mickeytate7048]

Great 👍 Is this sensor made like a long barb

[@erfrye]

yes

[@markisboss]

Before I take the alt off, was wondering if the sensor was bad, would the gauge still work? Because mine still does but the low speed fans never came on as the car blew all of the coolant out and got hot.

[@richmartin2518]

Great job on the video. Thank You.

[@EnjoyCalculus]

ive got the same vehicle but in my case the temperature gauge stays on cold but coolant sprays out from overheating. any ideas?

[@papiwiizz954]

Did You find out what ir was , My ford Focus does the same

[@stevebeavers7091]

Great job I was looking my self ive replaced the resister plus the wire as it was melted but still not getting fan to come on unless I turn ac on all fuses are good but bought new ones anyway and replaced them she blew the head gasket from this ive replaced all this and whole top end been rebuilt but still fan isn't coming on will check this out 2morrow and I hope this fixes it as I don't want to blow head gasket again this time got luck no head damage she tells me fan only come on with ac after she blew the head gasket

[@stevebeavers7091]

I ve done everything you mentioned and I've replaced it all wether it needed it or not just to be on the safe side ,and still fans only come on with ac on 

[@stevebeavers7091]

One of the plugs for the resisted was bad so I bought new resisted and plug same thing fans only come on with ac on only

[@nicolascastaneda950]

was the car overheating only at idle??? mine is overheating only when i came to a stop for a while and right when i started moving again the gauge would go back down to normal temp

[@hihenry5781]

how is the sensor of gas in the ford focus please I hope your answer

[@erfrye]

no longer have the car

[@sarahbroome875]

Where is the knock sensor located on a ford focus zetec se 04 plate does neone no as its pinking and driving my dad mad????

[@armandofelix1874]

I've been having this problem on my focus: sometimes the gauge starts to move to high temp and then goes back to normal. But sometimes it does not go back and stays on the high temp. It happened to my yesterday, I checked the Fans and they were not working. Do you thing this cloud be related to the coolant too?

[@davidwamsley5109]

Why are you bothering with it? What are the symptoms you wish to correct?

[@erfrye]

cooling fan not working. car was over heating.

[@lanceguerrero8399]

I know this video is older and you might not remember but it's worth a shot...So I ran into the same problem. Car started over heating. I hooked up my OBD reader and it told me it was the cylinder head temperature sensor. I got the replacement but I'm having a problem taking the alternator off. I removed the 2 long bolts. Are there anymore bolts you had to remove to get the alternator out the way?

[@EarendilTheBlessed]

Lance Guerrero No. Just carefully pry it out of the way.

[@MrJizzinator23]

+Lance Guerrero just changed my alt on my 02 ford focus zx3 and u have to shake and pull UP.. its a bitch but itll come off . since i was tossing mine i used a hammer to carefully get it loose

[@lanceguerrero8399]

+James “The Luckyone” Luck thanks for the info. I haven't really messed with mine since I have my SUV to drive. Maybe I'll give it a shot this weekend if the weather stays good. If all else fails at least I know now that a hammer will do the trick lol

[@lanceguerrero8399]

+EarendilTheBlessed awesomethanks for the reply and thanks for making this video.

[@MrJizzinator23]

+Lance Guerrero lol just be careful not to pry it much so u don't damage the block where it slides into. just shake it as much as possible and gently tap on it upwards . if you're tossing it I wouldn't worry about damaging the Alternator pulley so use that as leverage to pull up

[@markisboss]

Hi - Thanks for video. Same problem I think. Car blew coolant tube on top of the radiator and left me stranded. I noticed as the car got hot, the fans never came on but did come on with the AC turned on. It was too late though as I think all of the coolant had boiled off. Thank god I didnt blow the head gasket...The resistor between the fans had been changed some time before, so I know this wasnt the problem. Pulling the wire of the sensor should make the fans come on (low speed?) if the sensor is bad? Makes sense...Thanks!

[@czervalenz]

Thanks a lot. Been looking for it as well.

[@santoslaya83]

hi, I do not understand the English, but thanks to translators online anyone can communicate through writing, well, my car has problems with fan, this only turns on when the air is running, turn in two marches, slow and high, but if you turn off the air the car overheats. disconnect valve that goes in the back of the alternator, and activated inmediatamnete the electro fan at high speed, now I wonder; How many legs you relex the second running of electro fan?

[@misslonewolf04]

Thanks my car temp read normal but i can feel it being hot. I look into this

[@erfrye]

the gauge would kinda work some times it did and some times it didn't "intermittent"

[@nicolascastaneda950]

Yup that's what it was one fan wasn't coming on while at idle.. Thanks!

[@wmwm2194]

Nick Castaneda what solved your issue?

[@erfrye]

Thanks, nice to know that it help you out...

[@austinbernard8370]

or good diagnostic advice, the cylinder head temp sensor only controls high speed fans

[@sarahbroome875]

Where is the knock sensor on this

[@bukuroshy]

Hi there.. I have Ford Focus 2002, Zts engine 2,0 litre,.. the problem is that the gauge on the dashboard stay on the middle that said the temperature of engine is good, but the engine is very warm, and fans doesn't work. I connect the fans direct from battery it is work good, I check all fuses and looks good, I don't no what to do.. because and coolant blowing because the fans doesn't work .. and still gouge on temperature stay on the middle, said the engine temperature is normal.. please help

[@هانيالبيلي-ع4ث]

التقسيمه بالعربى

[@davidantoniomendozaparra3339]

hello , sorry , you think you can subtitle this video into Spanish , I really urges the information you give in this video, im from chihuahua mexico

[@d.j.9961]

U don't have to take all of that apart! I have done it both with and without removing the thermostat but, the metal brackets, mine won't budge! I was dick of Ford to use a piece of black plastic to connect 2 pieces of heater core hose, instead of 1 solid hose or at least (like I did) I replaced mine with copper tubing!

[@erfrye]

I had to take the belt off to take the alternator off. the alternator has to come off so you can get to the sensor.

[@ChristopherWalters024]

This video helped a lot!!! Thanks!!

[@d.j.9961]

I have the same car & engine & I am able to un-tention my serpentine belt tentioner with 2 box end wrenches connected together for added leverage!!!!! WITHOUT ANY SPECIAL TOOL!!! SIMPLY USING BOX END WRENCHES_OR AS THEY CALL EM OVER SEA'S, SPANNER WRENCH.THATS JUST A STORE TRYING TO SELL U SOMETHING.THO,WHEN DOUBLING UP BOX ENDS,YOU HAVE TO BE CAREFULL THEY DONT SLIP, SO THEN I CAN SEE THAT TOOL BEING USEFULL IF 1 DOESNT KNOW HOW 2 DOUBLE UP BOX END WRENCHES.

[@MsBerryBash]

thank you so much, i need to know this

[@d.j.9961]

When I disconnect my temp sensor, both fans came on but the one on the passenger side of the car stopped after a few seconds.the driver side fan stayed on constantly!

[@eduardomedina3470]

Thank you man..you are a big..

[@DavidVargasCa]

no sound?

[@erfrye]

try turning your speakers on

[@jamesbuck3818]

The sensor controls BOTH fans...

[@musicauthority8704]

I have a 2000 Focus ZTS with the Ztec engine. I'm getting rid of it, but a person couldn't give them cars away. that piece of shit has soured me on ever owning a Ford ever again.

[@austinbernard8370]

and nothing bypasses the fan relay it's just bypassing the fan switch witch commonly fails and is located in the fan shroud on top between the fans

[@d.j.9961]

HERE IS A QUESTION 4 EVERY FOCUS OWNER! I have a 03 focus dohc zetec vin-3 & I have replaced everything from the cylinder head temp sensor, cooling fan, cooling fan solenoid & wiring harness, water pump, thermostat & housing & gaskets, new cooling fans & yet, my cooling fans still don't work! Also, I changed all the relays & still THEY DONT WORK! I can disconnect the cylinder head temp sensor & THE FANS RUN CONSTANTLY BUT THAT WILL FRY MY ALTERNATOR IN 3-4 MONTHS! SO, I spliced into one cylinder head temp sensor wire's & connect a toggle switch & turn the fans on & off but, I loose my temp gauge when the fans run & I SHOULDN'T HAVE TO RUN THEM MANUALLY! ANY ADVICE HELPS!!!!! Once again, EVERY PART IS NEW!!! THANK YOU TO ANYONE WHO MITE BE ABLE TO HELP ME OUT

[@hjtatum]

life saver thanks man

[@pastovasquez1858]

I hace same problem with my ford focus.

[@erfrye]

yes

[@austinbernard8370]

that's not the fan switch

[@erfrye]

this car was over heating all the time. to me it sounds like your fans are not working.

[@JuanGarcia-yj6pb]

thank you!!

[@pcfaulkner]

i hate my focus my temp sensor works as i replaced it with a brand new ford part, on the dash the temp goes up as normal and gets to half way and goes no further, i have put power directly to the fans they both work, however i know there is a resistor pack on top of the radiator that can get rusty and stop working, not replaced this yet because i am about to kick the shit out of it. anyone else have solution before i go ape shit? if my car breaks down on me i will just burn it

[@pcfaulkner]

i have now sold this bastard

[@josephmose8975]

+pcfaulkner lmao! I probably bought it

[@tbirdpimp07]

pcfaulkner. i went to orielys and bought a fan temp control that has a probe you zip tie to the radiator and tied it into the factory fan relay to triger it its adjustable

[@d.j.9961]

pcfaulkner I see I'm 3 years late responding 2 your question but, have u replaced the thermostat? Made sure your heater core isn't clogged? Any leaks? Mine was leaking where the heater core hose has a Union (rite by the thermostat) I replaced the thermo 2x be I noticed that it was the heater core hose coupler! Design flaw by ford!!!! I replaced mine with copper tubing!!! When I disconnect my temp sensor, both fans came on but, the passenger side fan only ran momentarily/ stopped running! I'm wondering why?

[@d.j.9961]

I NOTICED THAT MY COOLING FANS WERE NOT WORKING, IT NEVER HEATED UP BUT, I NEVER COULD GET THE FANS TO COME ON UNLESS I DISCONNECTED THE HEAD TEMP SENSOR!(TWO GREEN-ISH) WIRES BY THE ALTERNATOR THEN, BOTH FANS WOULD COME ON BUT,THEN 1 WOULD STOP RUNNING SO, I WENT TO A JUNKYARD & GRABBED 4 RELAYS THAT CONTROL THE COOLING FANS! THEY ARE IN THE "UNDER THE HOOD" FUSE BOX & FIDLED WITH THEM & EVENTUALLY, THEY BOTH CAME ON! I SAW THEM KICK ON 1 TIME & ASSUMED THE PROBLEM WAS FIXED! ITS NEVER OVER HEATED, THE GUAGE GOES TO THE MIDDLE & STAYS THERE BUT, I HAVE NEVER HEARD THE FANS COME ON SINCE!!! THO, MY EXHAUST IS LOUD! I AM FIXING THE EXHAUST AS SOON AS IT ARRIVES!!! YOU NEED A OWNERS MANUAL TO DESIPHER THE FUSEBOX (WHICH IS FORD BULLCRAP!!!) BUT, I BELIEVE THERE ARE 2 LOW & 2 HIGH RELAYS FOR THE COOLING FANS!!! THIS WEEK ALONE, I HIT A MASSIVE POTHOLE, BLEW A BELT IN TIRE & REPLACED BOTH FRONT TIRES, & WHOLE FRONT SUSPENTION & INNER & OUTER TIE RODS & BALL JOINTS & THE HEATER FAN SOLONOID WENT OUT (IT'S BEHIND THE GLOVEBOX-ONLY WORKS ON #4 HI) & THE FLEXPIPE DIRECTLY PAST THE CAT FLANGE SO, IM WAITING FOR PARTS TO ARRIVE AGAIN!!! FUCUS!!!I WANT TO ORDER A STRUT BRACE NEXT!

[@enriquebruccini7081]

Exelente

[@cgulston1955]

So you did not say the real reason you was guessing just as me and others

[@666elpayaso]

thaks bro is work gracias funciono

[@austinbernard8370]

educate your self before you mislead others BTW I've never changed a cylinder head temp sensor on a focus

[@garycrombie9875]

From what I've read this sensor plays a big part in gas fuel mixture and does initatiate the fan. The cylinder head temperature sensor is an electronic engine management sensor found on many modern vehicles today. As its name implies, the cylinder head temperature sensor measures the temperature of the engine cylinder head. Temperature is one of the most important engine parameters that the computer uses to calculate timing and fuel for maximum engine performance and efficiency. The cylinder head is similar in purpose to the coolant temperature sensor, however, it is more accurate due to the construction and operation of the sensor. Due to the important role that the coolant head temperature sensor plays in the engine performance calculations, when the cylinder head temperature sensor has an issue, it can negatively affect the performance of the vehicle. Usually a bad or failing cylinder head temperature sensor will produce a few symptoms that can alert the driver of a potential problem that should be serviced I just changed one so I'll let you know what happens.

[@tysdisposition5357]

Try talking faster...