UCF10/11 1989 - 1994 LS400 FaQ(Frequently asked Questions)
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UCF10/11 1989 - 1994 LS400 FaQ(Frequently asked Questions)
Here are a few Frequently Asked (and answered) Questions regarding the First Generation LS. Simply click on the underlined links to be taken to another thread with more details.
Section One - Forum rules and general navigation
Click here to be taken to our forum rules including important details regarding our work safe environment, guidelines against personal attacks, group buy rules and even details on what signature images are allowed (those pictures you see when members post at the bottom of their reply). Please take the time to read them as our forum rules are strictly enforced.
If you come across an informative site or tutorial please post the location (or the general topic of the thread), and link. I will organize them, and integrate this information into the FAQ for others benefit.
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Example:
"How to..."
~~~.com
---------------------------------------------
Example:
"How to..."
~~~.com
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Through this FAQ the following terms will be used:
A/S= Air Suspension (factory-oem)
Rear Section= "axle back" ie. using OEM midpipe
Cat-Back= no OEM piping after the Catalytic Converters
*If you post in this thread, it may be edited or even deleted based on relevance or to consolidate information. Last edit: 3.23.14
Reference
Tutorials
Note: Best place for general information will be www.Lexls.com, most of his tutorials for the 1LS will transfer over with only minor (if any) changes.
Maintenance:
Engine:
- UCF 2X Replace Starter Plunger and diagnosis (Applicable to UCF1X)
- DIY Engine and Transmission Bushings Replacement
- 95 LS400 Starter dead....DIY replacement completed. (Applicable to 1-LS)
Transmission:
Fuel System & Intake:
Exhaust:
Suspension & Brakes:
- How to replace rear struts/shocks on UCF10
- Brake upgrade discussion/Supra TT Brake Upgrade
[*[[url="https://www.clublexus.com/forums/ls400/279473-ucf20-21-front-brake-caliper-into-ucf10-11-the-mother-thread.html#post2591255"] UCF20/21 front brake caliper into UCF10/11?? (The Mother thread)
Steering:
Body:
Interior:
Electrical:Instrument Cluster:
- Instrument Cluster Circuit Board is Bad! $1000 bucks!!!
- How to fix your speedometer needle when it does not work
- FUel Guage fix tutorial
- Cluster flicker & gas needle fix (with pics)
Lighting:
Audio:
Modifications:Build Threads:
Discussion Threads of Interest:
- Who has the most mileage on their LS400? (The Mother Thread)?
- Gas mileage...good-bad (The Mother thread)
- What octane gas do you use? (The Mother thread)
- What type of oil do you use? (The Mother thread)
- Shelf life of oil
- Unofficial LS400 buyer's guide
Fluids:
Engine Oil: 10w/5w-30 (depending on locale)
Transmission Fluid: Toyota T-IV or JWS 3309-spec fluid only
Coolant: Toyota Long Life or equivalent
Power Steering Fluid: Dexron III/Mercon Transmission Fluid Only (no PS fluid)
Brake Fluid: DOT3 compliant brake fluid
Differential Gear Oil: SAE 75w-90
UCF-1X bulbs:
Exterior-Low Beam
+89-92*: 9004 (*USDM Only) (2x)
+93-94: H4 aka 9003 (2x)
-Foglights
+89-94 : H3C (2x)
-Turn Signals (front and rear)
+1156 (2xfront/2xrear)
Side Marker Lights
-Front: 168/194 (2x)
-Rear: 1157 (2x)
Stop/brake Lights
-1157 (6x)
Reverse Light
-1156 (2x)
Third Brake Light
-921 (2x)
License Plate Lights
-168 (2x)
InteriorDome Light:
Front: 3022 (31mm festoon-type) 1x
-Rear:
Map Lights:
-Front: BA9s
-Rear: BA9s
Rear Pillar Lights:
- 168/194 (2x)
Door Lights:
- 168/194 4x
Glove Box Light:
-#74 1x
Ignition Cylinder Light:
-2721 or shaved #74 LED 1x
Front Footwell Lights:
#74 2x
Trunk Light:
- 168/194 1x
Discovering the rest of Club Lexus
Now that you've explored the LS forum, we want to make sure you knew about the rest of Club Lexus and took advantage of all it has to offer. Click the bolded text to visit the mentioned sub-forum.
We've created a gallery to host your LS images, free of charge!
We have a dedicated Automotive Care & Detailing forum that is for discussions on washing, waxing, polishing, detailing, cleaning and maintaining the the beauty of your new Lexus. This forum is moderated by two professional detailers.
Our Vendor Marketplace is the place to find group buys and great deals from ClubLexus' supporting vendors.
The Wheels & Tires Forum is where you can ask all sorts of questions about aftermarket rim and tire combos.
If you want to shoot the breeze about SOB (some other brand) of vehicle, try Car Chat or ask about something else in life try The Clubhouse.
We have many local meets for Lexus enthusiasts, check out the forum for your area.
and this is just a start... we wanted to make sure you took some time to poke around and discover the other areas of the forum that can enhance your Lexus ownership experience. Welcome to our community!
THANK YOU to all the Club Lexus moderators, editors and members that contributed to this FAQ and the linked content!
Last edited by timmy0tool; 06-08-20 at 02:29 PM.
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Stixxx21 (01-03-23)
#2
Lexus Champion
Hood Struts Up Date
Here's what you need......Mighty Lift part number 95029. (78-93 Ford / Mercury Hatch struts) .Just remember to cut out your old ball screws to reuse on the new struts.
#3
Instructor
iTrader: (3)
Pending new edit note: These were all related to problems I had on my 98 and may not even need to be gone through for the 1st gen FAQ
I had the Taillamp Failure Message on my 99 LS400, but had no bulbs out. This thread was the only one that solved the problem. See Sam's post about the 3rd brake light.
https://www.clublexus.com/forums/ls4...indicator.html
Also, when looking at how to remove the tail housings to check the bulbs this was a good thread. These things are easy once you know what to do.
https://www.clublexus.com/forums/ls4...ake-light.html
Here is a good link for the 98-00 Manual in by Page format:
https://www.clublexus.com/forums/ls4...ere-it-is.html
2000 Nak Wiring Diagram:
https://www.clublexus.com/forums/ls4...m-pinouts.html
I just fixed my hood struts with ebay struts for $40 shipped. They are "Tuff Support Gas Springs 612200 replaces 4566" They were perfect came with bolt in ball mounts that fit, were the perfect length, and wern't too hard to lower the hood.
Hidden Features of The 2GS (same as LS 2.5):
https://www.clublexus.com/forums/gs-...ery-known.html
CBEST for LS 2.5:
https://www.clublexus.com/forums/ls4...-99-ls400.html
Pic Thread:
https://www.clublexus.com/forums/ls4...of-ur-car.html
Audio Thread:
https://www.clublexus.com/forums/ls4...up-thread.html
Wheel Thread:
https://www.clublexus.com/forums/ls4...eel-setup.html
Suspension Thread:
https://www.clublexus.com/forums/ls4...-in-yours.html
98-00 Fog Light Mod:
https://www.clublexus.com/forums/ls4...-complete.html
Wood Wheel Cracks:
http://www.american-stitches.com/pag...us_restore.htm
I had the Taillamp Failure Message on my 99 LS400, but had no bulbs out. This thread was the only one that solved the problem. See Sam's post about the 3rd brake light.
https://www.clublexus.com/forums/ls4...indicator.html
Also, when looking at how to remove the tail housings to check the bulbs this was a good thread. These things are easy once you know what to do.
https://www.clublexus.com/forums/ls4...ake-light.html
Here is a good link for the 98-00 Manual in by Page format:
https://www.clublexus.com/forums/ls4...ere-it-is.html
2000 Nak Wiring Diagram:
https://www.clublexus.com/forums/ls4...m-pinouts.html
I just fixed my hood struts with ebay struts for $40 shipped. They are "Tuff Support Gas Springs 612200 replaces 4566" They were perfect came with bolt in ball mounts that fit, were the perfect length, and wern't too hard to lower the hood.
Hidden Features of The 2GS (same as LS 2.5):
https://www.clublexus.com/forums/gs-...ery-known.html
CBEST for LS 2.5:
https://www.clublexus.com/forums/ls4...-99-ls400.html
Pic Thread:
https://www.clublexus.com/forums/ls4...of-ur-car.html
Audio Thread:
https://www.clublexus.com/forums/ls4...up-thread.html
Wheel Thread:
https://www.clublexus.com/forums/ls4...eel-setup.html
Suspension Thread:
https://www.clublexus.com/forums/ls4...-in-yours.html
98-00 Fog Light Mod:
https://www.clublexus.com/forums/ls4...-complete.html
Wood Wheel Cracks:
http://www.american-stitches.com/pag...us_restore.htm
Last edited by McPierson; 07-03-12 at 08:51 AM.
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