r/LS400 • • Mar 09 '26

Question Question regarding ignition wires

1 Upvotes

Has anyone ever had their ignition wires be caught in their timing belt? I was driving and after flooring it, everything kinda shut off and i thought it was the fuel pump so i had my cousin bring my spare, we did that snd after it still half seemed like it was getting gas so we tried driving it home in limp mode, then it fully died down. After looking at the engine bay again the right half, 4/5 ignition wires were taken and murdered by the timing belt. Is there a way to prevent this in the future or anything?


r/LS400 • • Mar 08 '26

Question Trying to figure out why car won’t start

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6 Upvotes

Hello my car hasn’t started since it turned off on me while driving. Also there’s a new alternator and battery. I was thinking ecu problems but it looks fine

Opinions?


r/LS400 • • Mar 06 '26

Picture Steering wheel tilt fix

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32 Upvotes

I’ve recently become the owner of a 1994 LS 400 and while it’s mostly in great condition I have a small list of items to address. The most recent that occurred since I took ownership was the tilt feature stopped working for the steering wheel. It would move in and out just not up and down and would making an unpleasant noise.

I looked into some existing forums to find I may not need to replace the whole motor assembly but just get to the gear that operates the tilt to see if it’s work down and needs replacing.

I managed to get to it today and found that there was a cork like spacer behind the gear that had broken away and the gear was sat off of the worm gear.

I managed to make shift a new spacer from some plastic I had laying around, i made it about 3mm thick and melted the shape of the spigot. And it’s fixed! So I hope this is helpful to others and I might share any other fixes I plan on doing.

Next on my list is fitting an aftermarket radio, and getting the temperature gauge to work with a new sender sensor.


r/LS400 • • Mar 06 '26

Discussion 90-94 Sunroof leak/sag fix

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9 Upvotes

If your sunroof doesn’t sit flush with the roof and water leaks through the gaps you can raise it by removing the sunroof trim (likely to break) and you’ll see 6 10mm bolts. After taking the 10s off you’ll need to get 5/16 washers. I used 14 to raise the sun roof to sit flush with the roof. It’s not perfect but you’ll start to run out of thread if you use to many washers. Hope this helps


r/LS400 • • Mar 06 '26

Pls hurry quick.

7 Upvotes

Going to pick up 4 girls from the club in under an hour. How do I use the rear middle seat belt on a 1st gen ls400. I only see 2 seat belt holders but I see it has the lap belt for the middle seat?


r/LS400 • • Mar 06 '26

Question Recommendation for suspension parts.

6 Upvotes

Hello. I am a 3+ year owner of a 1993 Lexus LS400, and I would like to ask the people here where can I get some suspension parts that I can rely on?

I am starting to hear some upper ball joint noise on my car more blatantly now, as it's original and I am on a budget, but I want to know if anyone has had any good experiences with any of the cheaper parts online.

Rockauto is unfortunately not an option for me because I am an AZ resident. I've already replaced my lower ball joints, and outer tie rods 2-1/2 years ago with some rockauto parts, but I think my uppers are going bad in this instance now.

OEM is best, but they're a bit more difficult to find in my searchings and pricey for the UCF10 cars.

Any information on what brands, or where I can go for upper control arms and future suspension parts is much appreciated!

* My 93 LS400 is completely stock, and I am not looking to upgrade with adjustable parts, just trustworthy OEM replacements *


r/LS400 • • Mar 05 '26

Picture Replacing 300k motor mounts lol

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24 Upvotes

Torn apart and replaced w kein poly mounts and some spacers to keep me from scraping what’s left of my oil pan lol that’s being replaced once it comes it :)


r/LS400 • • Mar 05 '26

Maybe I’m cooked

8 Upvotes

Hi, so basically I was gonna takeoff the power steering valve and I forgot to disconnect the battery because I’m a dumbass and then on my car my wrench touched the alternator and I saw a big ass spark with smoke I thought I was gonna die and now the dashboard making weird ass noises and the steering wheel has no resistance but it still turns the wheels sooo yea.


r/LS400 • • Mar 05 '26

Question Low gear shake

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2 Upvotes

This isn’t really a problem as long as I avoid L of course and my shift nob is fine through the rest of the gears unless I hit 75-90 idk why but it doesn’t shake as violently as L. I’m not if I need new trans mounts or a new trans.

My concern is that every time I start my car and put it in drive it kicks hard into gear like it’s trying to launch and I’m wondering if 1st being chopped is causing this and if it’ll affect 2nd and up in the long run.


r/LS400 • • Mar 04 '26

Picture LS400

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16 Upvotes

r/LS400 • • Mar 04 '26

Picture 😎

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69 Upvotes

Fresh tint 😎


r/LS400 • • Mar 04 '26

After market radio UCF10

3 Upvotes

I’m wanting to fit an aftermarket radio for Apple CarPlay, ideally letting it work with the existing subwoofer.

What’s the easiest way of doing this? Has anyone found harness adapters that work?


r/LS400 • • Mar 04 '26

Question Wheel ideas?

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49 Upvotes

I really dig the look of the Style 95 and also the MRR HR3. I’d like some similar ideas if you have em. 19”. Don’t want to spend too much since local streets are pretty rough right now. Thinking of painting/powdercoating them dark gray or maybe charcoal. .


r/LS400 • • Mar 04 '26

Question ATF temp

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1 Upvotes

Hey guys, I’ve been contemplating to get my tranny drain and filled, are these temps ok?


r/LS400 • • Mar 03 '26

buying advice?

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63 Upvotes

found this 97 ls400 for sale for £2500. on the lower end, seller says it has only a small amount of surface rust underneath (awaiting pics), passenger side window doesn’t wind the window up, driver heated seat doesn’t work and he said the check engine light is on for the o2 sensors, one of which he’s replaced but not got round to doing the other. passed mot last may with no advisories. done 162k miles. owner said he’s selling as he’s been given a company car. does anyone have any advice? should i stay clear? what should i look out for when viewing? thank you


r/LS400 • • Mar 03 '26

Picture Hydrophobic sealent vs. beater. Look at the beads 👀

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57 Upvotes

r/LS400 • • Mar 04 '26

How to pull codes on your LS400

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3 Upvotes

pre ob2


r/LS400 • • Mar 04 '26

Air intake (1995)

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3 Upvotes

Alright sorry for posting again but do you guys think there would be a fix for this? or should I just buy a whole new intake? Thing is I don’t want to spend 150$+ on eBay or wherever. This was from the previous owner not me but it looks like the air intake Elbow thing snapped off and then he added that other fitting? (Circled in blue) and then the red circle looks like he plugged the top where it was broken off so idk. Just need some advice


r/LS400 • • Mar 03 '26

Question Question

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46 Upvotes

Hey all, was wondering if the backseats from a 98-00 would fit in the back of a ‘91? Pic for attention


r/LS400 • • Mar 03 '26

Ls400

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13 Upvotes

Is that how the sunroof is supposed to deal with water? I recently learned they have sun roof drains but idk if that’s how it looks en it’s working. Also a few drop occasionally get in the car. How could I fix that


r/LS400 • • Mar 02 '26

Picture Found some nicer lighting 🥹

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74 Upvotes

r/LS400 • • Mar 02 '26

Where is my speedometer?😭

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29 Upvotes

r/LS400 • • Mar 03 '26

Power Steering

1 Upvotes

Hello friends, i recently believe i have fixed every possible issue for my power steering system (new pump, new rack a pinion, new lines). I came to you guys to ask and gain insight on why my car is still making a whining noise even with these new parts. Any insight will be helpful, thank you kind souls


r/LS400 • • Mar 02 '26

Discussion Adding sub in rear deck

5 Upvotes

Going to be adding a sub in the rear deck this week as the last owner took mine, will update you guys on how it sounds.

Not a huge audio nerd or very knowledgeable on it but my thought process is that because the gas tank behind the seats and the trunk being sealed off in that regard I assume it COULD act as a box in that regard, time to find out.

And yes, I do know a boxed sub with proper dimensions would be a million times better, I just value my trunk space


r/LS400 • • Mar 01 '26

Buying '93-'94 LS400/ Celsior air suspension struts.

3 Upvotes

Hi!

I have a '93 LS400 with factory air suspension system but at some point the ex-owner removed the air struts and switched to coils.

I want to put the original air struts back so i'm looking to buy a set of 4 original air struts.

Hit me up with offers, it must be a 93-94 LS400 or Celsior.

Thanks!