How to replace the thermostat in the Lexus LS430 - VOTD

Thermostat replacement: 45 - 60 minutes ($30 / 150 / $175)
NOTE: The jiggle/bleeder pin should be at the 12 O'clock position when installing the thermostat.
In this video I helped a friend replace the thermostat in their 2001 Lexus LS430. I is pretty easy, however, the dealership had a problem getting the correct thermostat. So, it may be better if you pull the old one before picking up the new one to insure you get the correct part. My GUESS is that the GS and LS take different size thermostats. This process should be the same from 2000 through 2006.
-------------------------------------------------
Disclaimer: • In this video I share ...
How to search my videos: • How to find videos on ...
Visit my Website for special took, my wish list and other helpful information: www.RobertDIY.com
Support Robert, become a Patron: / robertdiyafterdark

[@johnodonnell4141]

Easily the best car repair video that I have had the pleasure to watch ! Thanks so much !

[@RobertDIY]

Thanks for the kind words. Thanks for watching.

[@michaelcook3427]

Good detail, as far as for me. A laymen in learning. Thank you for your efforts.

[@RobertDIY]

You're very welcome!

[@yungflyandflashy12]

You the man rob! Multiple cars various fixes you always come thru with the thorough vids!

[@RobertDIY]

Thanks

[@yungflyandflashy12]

Car still overheats. How do you bleed this coolant system?

[@RobertDIY]

I usually just fill it up, fill the overflow tank, drive it about 10 minutes, let it cool down and fill the radiator again.

[@BullyCanadian]

Hey Robert thanks a lot for this video. I had to replace the stickey thermostat on my sc430 I followed your video and it went really well. Took literally less than 20 minutes. I appreciate you putting this video on! By the way when I bought the thermostat they gave me the wrong gasket as well! Which I thought was pretty ironic after watching your video

[@RobertDIY]

🤦🏾‍♂️

[@RobertDIY]

🤦🏾‍♂️

[@AKJeeper]

Probably should mention that the jiggle pin on the thermostat should be at the 12 o'clock position. And with all that coolant spilling out, I can't help but wonder if there's an issue with the radiator cap too. It looked like it was missing the smaller diameter seal (normally have two seals, a larger one and a smaller one).

[@RobertDIY]

Thanks. I put it in the comments.

[@RobertDIY]

I'll go double check the cap. I think you are right.

[@dovannim.gaming8570]

As soon as I finished this video, I said “maaaannnn I’m about to do this myself!” 😂😂 great video!!

[@RobertDIY]

Go for it!

[@arcflashed]

Thank You. It was very helpful when you showed the part numbers. I'm off to go change mine now

[@RobertDIY]

You're welcome!

[@motoverda]

Excellent instructions and good advise on maint.

[@RobertDIY]

thanks for watching.

[@nsxt290]

Another fine video RobertDIY. I believe in your philosophy: get OEM if possible if you’re doing your own work like this thermostat (where warranted).

[@RobertDIY]

Thanks for watching.

[@explorehunter]

Thanks a lot for the well explained video! Any instructions on refilling the coolant back? I am worried about air getting in the system while refilling..

[@RobertDIY]

No, just fill the radiator, then the overfill tank, drive it 10 minutes, let it cool then refill.

[@moonshynethebombarder2076]

thank u bro u a LS SAVER

[@RobertDIY]

Thanks for watching.

[@johnfritz2944]

Great video!! Thank you so much. Good job sir.

[@RobertDIY]

You are very welcome

[@skiddism]

Solid DIY video! I appreciate the content.

[@RobertDIY]

Thanks for watching

[@docjody8624]

Robert, would've been a good idea to note that in the Lexus or Toyota, when the thermostat housing's mating surface faces vertically, it does matter which direction the thermostat's Jiggle Valve faces, which is "at the 12-o'clock noon" position. In some Toyotas, the T-Stat housing's facing lies horizontally, in which case that jiggle valve position is irrelevant. Curiously, in your video, the Jiggle Valve is positioned "up" at around the 12:30 or 1-o'clock position. Did it just wind up in nearly the correct position by happenstance or did you mean to have it there. The noon position allows air in the system to escape in vertically-facing thermostat housings.

[@RobertDIY]

Happenstance. Thanks for sharing, I'll pin this and make a comment in the remarks.

[@docjody8624]

@@RobertDIY It would've been just as easy for you to lie about it! Thank you for admitting it was "happenstance." My Mom always says, "It takes a big man to admit to a small mistake." You're a big man, Robert! I only knew about the Jiggle Valve from my own research, recently R&R'ing coolant and thermostat. I wondered what that little "pip" was for. Oddly, one of my Toyota's has a vertical thermostat housing, the other is horizontal. Needless to say, I drove myself nuts on the horizontal one until my friends in Toyota Nation said "it doesn't matter" w/ horiz. Only w/ vertical housing, jiggle valve "pip" goes up at 12-o'clock. You're a good person Robert!!!

[@RobertDIY]

Thanks for the encouragement. My Volvo also has the pin and I read that it was to be in the highest point in the housing, later to find out by a Volvo mechanic that it's to be near the lowest. The good thing is that while filling the system (on the Volvo.s), I can hear air passing through the valve. My life's goal is to learn something new every day. Thanks again.

[@toddplantz2815]

Excellent instruction.

[@RobertDIY]

Glad it was helpful!

[@kevinlopez4137]

I need change the coolant temperature sensor on the ls430 but I don’t know where is located

[@RobertDIY]

me neither.

[@caryrice9521]

Bro, you the man, thank you so much

[@RobertDIY]

Any time

[@returnofdaking]

Great video brother

[@RobertDIY]

Thanks for watching

[@XxAfroCoreBassxX]

Thank you man

[@RobertDIY]

You're welcome!

[@steverobinson4199]

Man I'm having a hard time with the bolts. I'm stuck as much as they are. Got the top 2 loose after spaying some lube, but the bottom one is ridiculously stuck.

[@RobertDIY]

ouch

[@celesteschaub3021]

I have a 2006 LS 430 and I live in Florida. When the weather starts to heat up I have problems with overheating, meaning the temperature gauge goes up quickly if i'm idling at a stop light for awhile and I have to shut everything/ac down. In the cooler months when I don't use ac or its not that hot, i'm ok. Im thinking it's just this problem, the thermostat. Im almost 72 but my son wants to do the work for me because lexus garage charges so much. Do you think this problem is indeed the thermostat? Ty

[@RobertDIY]

kzbin.info/www/bejne/eKXHmpl3p7iIabM

[@AlexA-cd6lw]

I got a check engine light for my thermostat but, I replaced it but I still have a check engine light? What does that mean?

[@RobertDIY]

Did you clear it?

[@RobertSmith-di5ll]

excellent

[@RobertDIY]

thanks.

[@joshfried2516]

How do u Know when u need a new thermostat

[@RobertDIY]

Either the engine takes to long to heat up or it overheats.

[@checktheplaylist101]

@@RobertDIY how about it overheats and then wont blow hot air/used to be i could cool it by blasting heat now i get no heat even though its overheating and vent makes weird rumbling sound when i put it on max/all other vent settings dont make a sound. I also have a leak in radiator(and changed thermostat 8moths ago) but trying to figure out whats what. Thanks regardless.Also radiator fan may be not working.

[@PoniatBtw]

@@checktheplaylist101 if hot air doesnt come out of the vents, it means that there's not enough coolant in the system, so it doesnt reach the heater core.

[@checktheplaylist101]

@@PoniatBtw Thank you, bought some of that k seal walmart special and it actually worked.. For now.

[@smokey_410]

What are the symptoms of a bad thermostat? a friend of mine's ls430 is overheating and leaking coolant but only when the heat is on. Could that be a bad thermostat?

[@RobertDIY]

Overheating and not getting hot enough.

[@BullyCanadian]

Where is it leaking from ? The way it works - the thermostat stays closed (not letting the coolant circulate into the engine area) when the engine is cold, when the engine heats up it opens to allow the coolant to regulate the temperature. When you run the heat the coolant also circulates through the heater core which has fans that blow past it to transfer the heat into the cabin. Is the car over heating? Is it taking too long to heat up? Is the heat inside the cabin always working ? Where is the leak?

[@checktheplaylist101]

Thanks Man!

[@RobertDIY]

You are welcome

[@checktheplaylist101]

@@RobertDIY covid bs is Agenda21/30

[@Elaba_]

Thanks.

[@RobertDIY]

Thank you for watching.

[@kamryn7496]

Hi Robert I got the clutch an every thing replaced on my truck an now the pedal is very soft it doesn’t slip it’s not hard to shift it is it true it will get harder once it breaks it?

[@RobertDIY]

Mine got softer.

[@kamryn7496]

@@RobertDIY oh ok

[@RobertDIY]

As long as it works, you should be fine.

[@AB-xh4vr]

What if no coolant drips out .is the pump bad?

[@RobertDIY]

I would say the coolant level is low.

[@alphaomega8373]

Only seen green or orange anti freeze. Buddy of mine add green antifreeze to his Explorer and wreck his coolant system :;/

[@RobertDIY]

Not good to mix types.

[@docjody8624]

What year Explorer? Depending on model year, Fords can take green, amber or orange. Best results: use correct coolant after completely flushing out incorrect, old, dirty, sludgy coolant. Dealer can tell you which color to use.

[@alphaomega8373]

@@docjody8624 think he has a 06" or 08" I have a 03 Expedition it takes that amber fluid.

[@RobertDIY]

Thanks for sharing.

[@AKJeeper]

There's also blue, purple, red, pink, and yellow antifreeze. But even within those colors, there's different 'kinds', so always check with the vehicle's owners and/or repair manual to be sure that you're using the right type.

[@nasarazam]

Don't you need to burp it?

[@RobertDIY]

yes.

[@midnightsunarchive]

Thank you man

[@RobertDIY]

You're welcome!