DIY: How To Replace 2001 - 2005 Honda Civic Thermostat

Here's a video on how to diagnose and replace a faulty thermostat for a 2001 - 2005 Honda Civic with the 1.7 4 cylinder engine. See cooling system parts list below to order.
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Once you've installed the thermostat, bleed the cooling system, here's a video for this process: • DIY: How To Bleed a 20...
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[@michaelg6641]

Finally, someone shows the actual TH piece being replaced.

[@RiggsGarage]

I try to help :)

[@RexRaven22]

wow, great detail including tools needed, "clearing workspace", patient , helpful for novice Thanks!

[@RiggsGarage]

You're welcome. Thank you for watching!

[@jrnproductions8939]

As a poor college student, I thank you from the bottom of my heart

[@RiggsGarage]

Glad to help!

[@mindlab780ab6]

Thanks for sharing .. this helps me out alot. 😊

[@Mxl100]

Best vid on this subject

[@RiggsGarage]

Appreciate that, thank you

[@nb9536]

Great video, on my 2002 acura el, I am loosing coolant from radiator going to reservoir container instead opposite. Is that thermostat. thx

[@ludwig-vi6pi]

Thanks man 👊🏼 I got it!

[@RiggsGarage]

Good work!

[@Ovicron]

Very informative, thank you!

[@RiggsGarage]

Thanks for letting me know!

[@saralang8615]

How long does it take to drain the fluid?

[@adam.119]

I replaced mine and it didn’t do anything at all my car still over heats the exact same

[@thedetectingshowwithjohnny3047]

Well explained... Thanks!

[@RiggsGarage]

Thanks for the comment, have a good one!

[@elmatamoros85]

Do the fans suppose to come on automatically when you turn the car on? or do they turn on once it reaches a certain temp.

[@RiggsGarage]

They are temperature controlled. They turn on and off based on coolant temp readings

[@MJ85D]

how many times do hve to replace this? this will probably be my 2nd time after 4yrs i wanna say now. i did the replacement in 2018/19 is and radiator .

[@RiggsGarage]

I would grab a new one from Honda if you keep having duds. The standard parts store stuff isn't the best

[@michaelg6641]

@@RiggsGarage My '01 runs super hot, and I had the TH replaced about 2 yeas ago in Phoenix, and no I am In la Vegas in daily 100 degree heat. It has never actually overheated, but has went into the limp mode one night after driving it hard, but it also seems to suddenly be low on oil (and coolant) if I don't watch it like hawk, and now I think the fan is not comin on, though it works with AC on. But I do have a Honda thermostat ready I got on Ebay, and that new fan sensor piece on the housing too, and a new relay I'm going to switch. I wonder if I should do that other coolant sensor too while the guy is in there? I actually have a new radiator hose too (lower I think), but these mechanics keep telling me don't worry about the hose for some reason.

[@djlancer88]

Old plastic yup. I did plugs today and snapped every clip on ignition coils. Any tips on getting off EGR valve nuts?

[@RiggsGarage]

Lots of penetrating oil with time to soak in overnight would be my recommendation

[@mrbarthol]

Nice vid! Crazy question, but I assume you had filled the radiator full afterwards before you did your "burping" video...of the coolant system that is😄

[@RiggsGarage]

Right, once I sealed the thermostat, I filled the system to the top, put the burp funnel on and filled that up. Once the thermostat opens, it draws in a lot of the additional fluid in the funnel as it is burped and air leaves the system

[@mrbarthol]

@@RiggsGarage I’m looking at replacing the thermostat on my son’s 2001 Civic, hopefully tomorrow, since the temp gauge is fluctuating up and down.

[@iamgnice]

My coolant keeps depleting after I drive about 29 miles or so . Soon as I get in the car I check the coolant and top it off and drive . When I get out it’s all gone and the plastic bottle thing is empty . It’s August 2024 right now so shud I just keep using water ? The other day it was overheating so I drained it all out completely n refilled it with water and coolant for old cars

[@RiggsGarage]

You have a coolant leak somewhere, you need to identify that and fix that

[@sergiosagrero3366]

My temp gauge is acting up when the car is fully warmed up the needle will not go up and then randomly goes up and sometimes will go all the way up but car isn't actually overheating. Also when i take it on long trips it loses alot of coolant what could this be? 2004 civic with 119000 miles

[@The513Warning]

Head gasket. The factory head gasket fails on these all the time. Exhaust gas leaks into the cooling system, pushing coolant out the reservoir. As long as you keep the radiator topped off, you can drive it like that until you get it fixed.

[@RiggsGarage]

Could be a number of things, you will have to diagnose it. Could be temperature gauge, air in the system, head gasket, many different things. Could also be low coolant leaving the temperature sensor exposed to air which would give you the wonky readings. Could be the gauge itself.

[@3rdeyesurgeon]

Wats up riggs. Should the coolant fans turn on as the engine is on? Cause my fans only turn when i have the A/C blowing.

[@RiggsGarage]

The coolant fans will kick on when the temperature gets to the threshold, then they will kick back off. They should also kick on when you turn the air conditioner on so they can pull air through the condenser and give you cold air

[@3rdeyesurgeon]

@@RiggsGarage thank you for your expertise Riggs. You the man. Appreciate you. 🙏🏽✊🏾

[@michaelg6641]

Same here..mine never come on even when l was in l Vegas and AZ 100 dg desert heat unless pushed AC button..felt like driving with a oven under the hood...a pizza oven. I changed the coolant sensor.

[@ctGONZOles]

How much did you fill overfill tank?

[@RiggsGarage]

I filled it to the full line after I burped it and the car was fully hot and thermostat open

[@HighRidgeHandyman]

Thermostats never come with the gaskets. You have to purchase gasket separately

[@RiggsGarage]

Most of the new style thermostats come with the rubber seal, there is no gasket. Just did a couple last week that came with them

[@Mxl100]

Wrongo!!

[@Shadow-wq6rg]

No specs?

[@RiggsGarage]

Tight

[@Dabrandman13]

1 ooga dooga will do fine

[@RiggsGarage]

@@Dabrandman13 Yes!