How To Replace Coolant Temperature Sensor 2.5L Nissan Altima

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New Coolant Temperature Sensor from 1AAuto.com 1aau.to/ia/1ATSU00023
In this video 1A Auto shows you how to repair your broken coolant temperature sensor. This applies to the Nissan Altima, years 02, 03, 04, 05, and 06.
🔧 List of tools used:
• Phillips Head Screwdriver 1aau.to/oYM/1AXAA00013
• 14mm Wrench 1aau.to/okv/1AXAA00010
• Anti-Freeze
• 5mm Hex Wrench
• Drain Pan 1aau.to/oeU/1AXAA00320
• Funnel 1aau.to/obX/1AXAA00310
For More Info visit us at 1aau.to/h/aI4/
⚠ DISCLAIMER:
While 1A Auto strives to make the information provided in this video as accurate as possible, it makes no claims, promises, or guarantees about the accuracy, completeness or applicability of the content. No information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. All do-it-yourself projects entail some risk. It is the sole responsibility of the viewer to assume this risk. 1A Auto is not responsible or liable for any loss damage (including, but not limited to, actual, consequential, or punitive), liability, claim, or any other injury or cause related to or resulting from any information posted in this video.

[@1AAuto]

√ *Watch the Video* √ *Buy The Part at 1A Auto* 1aau.to/m/Visit-1AAuto √ *Do it Yourself* √ *Save Money*

[@squirrelcovers6340]

You don't have to drain the coolant. Just pull out the sensor and install the new one.

[@jesusvaldez2964]

Just replaced mine on my 03 Sentra, same engine. No need to drain the fluid, just disconnect the connector to the sensor take 19MM deep socket or Wrench and loosen it. It did not leak any coolant at all. Hope this helps

[@princessthabahamianspartan4810]

Thanks! That was a question I had. What will happen if it does leak and what would be the reason for it leaking?

[@jaimeslife2953]

@@princessthabahamianspartan4810 it was possibly not fully tightened or the bolt was not put on correctly

[@2008laviolette]

Thank you. It is impossible to get under my car at home.

[@cloudstrife6911]

Thank you so much,I love when things like this are a simple fix

[@nini6823]

Many thanks for your replacement instruction of the thermostat sensor

[@mrslaharris7128]

U r AWESOME.... Ty ty so much im changing my radiator out as well i got frustrated when temp gauge went up to hot n im go try this hopeful this will help n plus my car dr said the same i wanted ur opinions not saying he was wrong but wanted to know from the expert ty ty i can do this myself..bless u have a good Easter..

[@GarrettHoyos]

You guys are the best.

[@mrfreeman1763]

Do Not over tighten the sensor, it is made of brass and will break off in your engine. Once you have it hand tight, you only need to turn the wrench a half turn or less to snug it up. Don't forget to bleed air out of the coolant system when replacing fluid.

[@1AAuto]

+Mr Freeman Thanks for the feedback!

[@jenaikiboi5654]

thanks was good to listen and learn something new

[@freddyoliver2656]

Like the video.. No crappy jokes. Straight to the point

[@1AAuto]

+@freddyoliver2656 Thank you! We love empowering our customers and showing how to perform DIY auto repairs with our high-quality auto parts. 1aau.to/m/Shop-1AAuto-c

[@DonManoBaget]

Hi Do you guys have any video on how to replace both thermostat on a 2002 Nissan Altima ...

[@juancarlosroman32]

I really appreciate your job giving us these useful and easy to understand videos guys. Do you have physical location in the SD area? Or can you ship to Mexico?

[@victorrios633]

Great, that help me to find out where is the coolant temperature sensor...

[@Skyethur]

my thermostat includes the rubber around it. does it have to be fit in the hole?

[@VyNguyen-uk4lt]

Excellent!

[@mattcartwright8474]

1) Never take the radiator drain (petcock) out unless you have to. Unthread it a few turns until it starts draining. I'm reluctant to even loosen it a little. Not something you want leaking down the road because you messed with it. 2) the coolant temp sensor is at the top of the engine! You only needed to drain a very little if at all. Why not just pull the coolant temp sensor out, let a little drain (if it even does) and replace? 🤦🏼‍♂️ Maybe you parts guys should stick to selling parts!

[@jerryakamuadams6399]

thats exactly what i was thinking

[@luiszambrano7506]

Hola amigo una pregunta donde lleva el sensor de temperatura una chevrolet colorado 2006 gracias..

[@edgara6333]

Hey how do you know you need a new one. ? my car doesent want to start. i was driving and then ut went off on me. could this be the problem

[@adrianiniguez4494]

2 questions. •How do I replace the thermostat? My temp gauge keeps up and down, the a/c stops working and recently white smoke was coming out the exhaust. •Will replacing the thermostats help?

[@hifigator4609]

there are two thermostats in these Nissan engines ... obviously because 2 is better than 1 (sarcasm) -- long pause for uncontrollable laughter -- And yes, i know the yankees here have a valid counter point, but here in Florida, no thermostat at all is fine and dandy! Yes, you'll lose a bit of fuel efficiency, especially with short early morning trips. And your heat will be pretty much useless on any short trips. BUT you will probably never blow a hose and thus never be stranded due to a blown hose. And you will probably never have any radiator issues. And your engine will never run hot, barring catastrophic problem or blatant neglect. You can lose water very slowly, especially in the summer. but just check once every month or so and top off if needed. Yes you can run perfectly with or without a thermostat. But with these Nissans, you can't run with just 1, so my vote here in Florida goes to none.

[@pepeiturralde9120]

Hi,does the sensor have to be the same color

[@omarhernandez8476]

Good video

[@1AAuto]

+Omar Leon Thank you!

[@larrysalvador1993]

Sir where is the located coolant sensor of nissan xtrail..2004

[@1988Mrpaco]

Hey, do you guys know where the intake air temperature sensor is located in the same car? They "pepboys" told me it was going to be located between the throttle and the air filter but I can't find it

[@1AAuto]

Thanks for watching. Pepboys is correct. It has to be on the air intake tube in between the throttle body and air filter. 1aauto.com 888-844-3393

[@Rrm-br5ku]

Do you guys use a specific brand of tools? I notice that you guys have a craftsman toolbox

[@omarhernandez8476]

Nice video

[@1AAuto]

+Keytosucces You can purchase some of the tools we use from 1AAuto.com

[@michaelkeith1171]

Do You HAVE to drain the coolant. I seems high enough to not need to drain it. Thanks

[@mrfreeman1763]

If you are fast, you'll only lose a little, but you still need to bleed the air out of the system afterwards. And of course you'll be letting antifreeze run down your engine bay, making it smell like antifreeze and potentially getting water where you don't want it.

[@squirrelcovers6340]

NO, it's completely UNNECESSARY.

[@efrensalazar6983]

Do you to drain your radiator fluid to change the coolant sensor

[@VatoPeso13]

Yes unless it would leak out from the sensor hole.

[@quagmire5765]

No... the only thing to do to remove the coolant sensor is to drop your gas tank that's it.. thank you🙂

[@zackeverhart7372]

Would a bad temp sensor caused the car not to start

[@kaleidoscope8743]

​i have a 2006 Nissan Altima 2.5 S with a no-heat at idle or low speeds (i.e. no defrost ). when I get up to 50mph or higher speeds the heater is fairly good, but as soon as I come to a slow speed limit, the heat fades to cool air. I cant defrost my windshield or clear in sleet/snow. I have replaced both thermostats and flushed the heater core in both directions. what should I try next and do you have a video for it?

[@tlc4bys]

Did u ever figure it out? Having the same issues with mine thanks

[@melissabeckworth6822]

Hi. I have a 2011 Altima and it's been over heating but it takes 50 miles for it to do it. Well today it started to over heat and the car would not go over 50 and the pedal was all the way to the floor. Help

[@1AAuto]

+Melissa Beckworth We wouldn't be able to diagnose an issue like that here, you may want to have a local mechanic take a look at it. Thanks for checking us out! 1AAuto.com

[@thatoneposideonkid]

Hello, I recently bought a coolant temp sensor from 1a auto and the one I receive has like a washer. Does it go in with the washer going in first?

[@1AAuto]

+Michelle Madriz Thank you for checking us out. You would want to position the washer between the sensor and the mounting surface. 1aauto.com

[@Pokkerguy]

Is it really necessary to drain out the coolant fluid?

[@1AAuto]

Thanks for watching! Draining the coolant helps keep the job cleaner. IF you dont it will come out the whole as you remove/install the sensor. While it may not be necessary it definitely makes the job easier for us. 888-844-3393

[@kaleidoscope8743]

​@@1AAuto i have a 2006 Nissan Altima 2.5 S with a no-heat at idle or low speeds (i.e. no defrost ). when I get up to 50mph or higher speeds the heater is fairly good, but as soon as I come to a slow speed limit, the heat fades to cool air. I cant defrost my windshield or clear in sleet/snow. I have replaced both thermostats and flushed the heater core in both directions. what should I try next and do you have a video for it?

[@danj4996]

@@kaleidoscope8743 Is your coolant level staying at proper level? If not you may have a leak or blown head gasket. However, you may just need to burp the system. That heater core sits in a bad place like many other vehicles. There may be trapped air in there and you are just pushing enough hot liquid at ~2000rpm to get heat but the air is still stuck at the top of the HC. Get a special funnel, sorry forgot the p/n I have, that attaches to the radiator. Raise front of car, best to place on hill or ramps to get good angle. Keep funnel topped off as you warm engine to operating temp and then keep revs up for about 5 to 10 minutes to push air out and coolant in. When bubbles stop, you should be good. Sorry, hard to describe in short reply but I am sure there are plenty of videos on this procedure.

[@danj4996]

@@kaleidoscope8743 this might help. www.justanswer.com/car/12e0j-2003-nissan-altima-heat-blows-cold-idle-works-great-highway.html

[@squirrelcovers6340]

NO

[@npoch0682]

I keep getting cold air from my vents. What should I do?

[@ItzNovaTastic]

I wish I had that problem rn lol.

[@1988Mrpaco]

It is not there, the only thing that is between the throttle and the air filter is the mass air flow sensor.. If you could upload a video or a picture of where it might be, I would really appreciate it. Thank you

[@1AAuto]

This video should help you out. How To Install Replace Mass Air Flow Meter Sensor 2002-03 Nissan Altima 2.5L Here's a link to the mass air flow sensor on our website if you need one. www.1aauto.com/1A/air-flow-meter/Nissan/Altima/1AEAF00031/531096/2003?VideoReply&KZbin&ATony

[@zaldyc5047]

Can you just replace it without doing the other steps?

[@cameronmorgan0203]

That’s actually a 19mm wrench based on another video I saw because when I tried my 14mm, it simply was too small

[@1AAuto]

+Cameron Morgan Thanks for the tip!

[@cameronmorgan0203]

1A Auto Parts you welcome and I appreciate you all taking the time to help out customers of the world with their car issues because you didn’t have to 💯👍😀

[@1AAuto]

+Cameron Morgan Thanks for checking us out!

[@PLATINUM2U]

I love my 2003 altima its been faithful 15 years and over 372k miles.. But I have to wonder are these cars money pits?? I hear from other owners theyve had nothing but problems.. Guess im lucky

[@circuityokayo6073]

You are

[@ahmed99924]

What's the problem of the car?

[@dasmith32]

1:19

[@ssloth5591]

I know this video is old but would make your car go in limp mode

[@carlosibarra1204]

Is no 14mm is 19 mm wrench

[@davidfescoto3981]

Why did you have to drain the coolant just to replace the sensor?

[@VatoPeso13]

Good question

[@terrellavery9]

That was gonna be my question. Thanks

[@revengefulgh0st]

If you didn't it would spill out when the sensor was removed.

[@ernestw1]

can't see why you would drain the coolant total waste of time and money

[@imjusttj3726]

14mm wrench is too small!!!

[@cameronmorgan0203]

Im just TJ that’s what I’m saying cause I have the same issue and a 14 mm wrench didn’t work

[@cedwatson3395]

Use the 19mm wrench or 19mm deep socket.

[@truneforesown9194]

You guys didn’t burp radiator. Air bubbles can damage the car!!!

[@1AAuto]

+Trune Foresown Thanks for the feedback!

[@1AAuto]

+Trune Foresown Thanks for the tip!