Lexus LS 400 - Answered Questions & Fixed Issues - Page 2


indicates a fan problem
if it has a viscous fan hub , replace it as it is not driving the fan hard enough to suck air through the radiator when the car is stationary
if it has electric fans then check coolant temp sensor, 2 fuses , relay and fan motors as they are not working

1995 Lexus LS... | Answered on Dec 30, 2017 | 117 views


traction control is for control of the traction of the drive tires
Tale it to a professional brake shop for a proper diagnosis
grabbing brakes is more likely no brake pads and / or damaged rotor discs

Lexus LS 400... | Answered on Dec 23, 2017 | 74 views


Follow the given link, maybe you get something useful. 1993 Lexus LS400 Service Repair Manual Download

1993 Lexus Ls... | Answered on Dec 21, 2017 | 62 views


sensor 1 is the sensor located before the catalytic converter and bank 1 is the side of the engine with cylinder #1 so if i'm correct and you have a V-6 that would be the rear of the engine by firewall and the sensor would be in the exhaust manifold

Lexus LS 400... | Answered on Dec 15, 2017 | 153 views


Go to online store reliable they have repair manuals I am sure you will get the solution. Here's the link
1991 Lexus LS400 Service Repair Manual Download

1991 Lexus LS... | Answered on Dec 11, 2017 | 100 views


its old and most likely needs some kind of lubrication

1996 Lexus LS... | Answered on Nov 28, 2017 | 250 views


Check and clean connections in your fuse boxes with an electrical cleaner.Change burnt fuses and ensure there is contact on your fuses. Check connections of your crank and airflow sensors as well. Clean the sensors first and if problem persist ,replace with new ones. Then take your car to a diagnostic technician to reset and check other technical problems with the diagnostic machine.

1991 Lexus LS... | Answered on Nov 24, 2017 | 56 views


The blower motor may have to be replaced.

1998 Lexus LS... | Answered on Nov 10, 2017 | 70 views


po400 is=egr valve system, exhaust flow malfuncion. Hope this helps. God-Bless!

1997 Lexus LS... | Answered on Nov 03, 2017 | 279 views


If the solenoid is clicking when you turn the key its very unlikely to be a relay fault, the relay controls the feed to the exciter wire which must be working for the solenoid to be clicking. If you haven't ruled out the battery completely do so by attaching jump leads, if that makes no difference you ideally need to check for a volt drop between engine and battery earth terminal and also main starter feed to battery positive, (the latter can be a problem with difficult to access starter motors tho.) if all wiring is ok its most likely the motor itself, if you can get to it give it a tap with something and see if it makes any difference. If it starts after a tap then its most likely the starter motor.

1991 Lexus LS... | Answered on Nov 01, 2017 | 140 views


1990 Lexus LS400 Service Repair Manual Download Try it asap.. I bought today. it's very cheap and very reliable. today they have offers as well.

Lexus LS 400... | Answered on Oct 26, 2017 | 36 views


probably worth checking code to get better ideas for diag

1991 Lexus LS... | Answered on Oct 21, 2017 | 139 views


Check the main fuse under the hood .It is possible corroded

1995 Lexus LS... | Answered on Oct 21, 2017 | 40 views


You just go to the link I attached I'm sure you will get the solution of your problem 1991 LS400

1991 Lexus LS... | Answered on Oct 11, 2017 | 177 views


Sounds like some kind of short or loose connection in the instrument cluster. A few years ago I had a van that would intermittently decide to not crank when the key was turned even though everything else worked. I went online to a forum for that brand and model vehicle and did some searching for a no crank condition and found others who had experienced the exact same thing and described what was going on and how to repair it. I followed those instructions and found exactly what they described, performed the repairs which was the resoldering of some cracked solder joints where the wiring harness connected to the instrument cluster, reinstalled the cluster and never had another moments trouble. That was on a 1998 so your 1991 could be experiencing a similar problem. But instead if just taking things apart and trying to find the problem, go to a Lexus forum and do a search for something like "temp guage maxes out when key turned on and starter stops working but then starts but reads 10 MPH too high after tapping on top of dash". You might have to try different wordings to find whay you want but I'll bet you dollars to doughnuts somebody else out there has had the same problem and talked about it on the forum. You can even just Google your question but you'll get answers for all kinds of vehicles and not even remotely similar problems. Good Luck.

1991 Lexus LS... | Answered on Sep 24, 2017 | 145 views


Sounds like you need to change your ignition switch. This happen when there are too many objects on your key chain.

Lexus LS 400... | Answered on Sep 12, 2017 | 74 views

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