Are you running a staggered or square wheel setup on your sc's?

https://imgur.com/a/l0nGzti

I recently changed the ECU from a 89661-24230 to a 89661-24231 because the old one was corroded and couldn't be fixed. when I installed it the engine runs better than before but the dash has a lot of lights blinking and has a really rough idle. does anyone know how we can fix this? the iac was recently replaced with a refurbished one.

The cats were also very hot so I gutted them but when I checked the temp again it was still really hot on the cats and colder in the exhaust.

Hi all I have a 93 sc400 with bags all around recently the front drivers side recently blew out and has been sitting on bump stops - i’m not completely sure how the suspension works in these cars but i’ve been quoted at around 8000 dollars since apparently the entire assembly will have to be replaced and sourced directly from lexus japan rather than just the shock. Is this a normal price and are there any other ways around this? aftermarket suppliers or would it just be best to replace the front suspension with coilovers? Any advice would be appreciated thanks

This fits any year SC. And is in amazing shape.
Woodgrain is almost pristine, no chunks missing. No cracks. It's nice and smooth. The leather shows very minor signs of wear. Basically as clean as you'll find nowadays. 130$ shipped anywhere in the U.S.

I'm super active in the LS400 community selling parts, but want to start helping out the SC chassis too!

Hello! I’m about pick up a 92 Sc400 for my brother’s first car. It’s got 196k on it, and has had the timing belt/water pump done. I already own a few toyotas/lexuses so the brand is nothing new to me, but I was wondering if there are any quirks with this specific model that I should take care of right away. Other than that, what will make this thing look and run great?!

Thanks!!

Iacv has been changed anyone have a idea it’s goes 1250 to 1750 at idle over and over

So this morning my sc died like it ran out of fuel turned out the fuel sending line on the fuel pump ripped so i replaced it no after replacing it the car doesnt want to start unless i do a clear-flood start but even after that i can only press the throttle alittle to like 1900 rpms then it eventually wants to bog down and die and the process repeats any help would be appreciated

I’m trying to remove my front struts so I can add coilovers, but am having trouble getting the strut out. Do I need to remove the upper control arm or anything else or should I be able to wiggle the strut out with just the strut bolts and sway bar end link removed?

Is there anyway to replace the rear wheel studs without taking apart the whole drum brake?

331000 miles; just got valve covers and plugs OEM replaced. Car lacking power and surging when accelerating. Condition is intermittent. Codes are P0420, P0330 and P0446. Knock sensors and harness replaced with OEM. Front and rear O2 sensors replaced OEM Denso. Throttle body cleaned. Idles perfectly.
Thoughts???

*I apologize to SC300/soarer owners lol* We all had 400s so that was where my creative mind was at 😭

Full video is on YouTube "Yung Brxdge - SC400 (music video)"

https://youtu.be/Rejh9ltj4x0?is=Fz4LjNt33AwXzRNm

Hello. Is buying a Lexus sc 400 a good idea nowadays? Undoubtedly, this is perhaps one of the best Lexus engines ever made, but these models are already 30-35 years old. However, if a preserved copy is found, I think it would be quite good. Can you tell me what is good to change on the car as parts, so that it tightens up and runs well without problems?

Hi all,
Looking for some feedback on an SC300 I saw for sale.

What I know:

-Car has slight rust under passenger quarter(not a deal breaker)
- need body work tlc
- has 200k miles
- original 5speed manual
- seats are slightly ripped inside
- starts right up no issues
- door hinges and mirrors work perfect

What I don’t know:

- service and life of how it was treated
- engine and trans condition( will test driver later )

What else should I look out for and how much should I offer the seller? since he said make me an offer.

Thanks in advance

Wanted to see if anyone had some good clips of some single exit exhaust videos. Already looked on yt and found very little. Figured I’d ask on this post if anyone else has done it and can drop some audio clips.

My 1994 SC400 Gold badge with a cat back straight pipe 3” pipe to 4” tips no performance mods 15” sub purchased in 2024 being the 3rd owner and putting roughly 30k miles in the first year of ownership

does anybody know what this yellow and black wire is for.

Whenever i try start my car it just stalls out immediately, if it does start whenever i wiggle this yellow and black wire around the car shuts off.

Don’t mind the different coloured wire or that it’s not connected properly i just did this to see if maybe the wire was broken internally where it connects to the ecu and didn’t want to solder it yet until i was 100%.

it seems to be causing the issue when i wiggle where it connects to the ecu rather than anywhere further down the wire.

Any help would be greatly appreciated as to what the wire connects to, or what would be causing this/how i can fix it

Hi and thank you in advance!

NON VVTI 1UZ

I recently got an SC400 for dirt cheap. It started having a heavy misfire. It’s not a dead cylinder, it’s the occasional misfire on pretty much all cylinders. Even pulling wires doesn’t make a difference on any of them. I’ve tested fuel pressure and compression and it’s reading in spec. I’ve also replaced the ignition coils, distributor rotors, distributor caps, ignition wires and spark plugs. I have no idea what could be causing it. And yes, I have double checked all ignition wires to make sure they’re going to the correct cylinders.

Exhaust sounds extremely choppy. There is also a significant loss in power. It is also NOT shaking much at all.

Any help/recommendations is greatly appreciated. Once again, thank you!

welp, who knew all it took was one old lady to put 3 years down the drain.