1990 Lexus LS 400 - Page 8 - Answered Questions & Fixed issues

My sincere apologies for the delayed response.
I am personally going back to answer your unanswered questions.

I do not know if you still need this information, but I am going ahead and answering it anyway. You may want to Print the Diagrams for future use.

on the following LINK. It has the Belt Diagrams you will need.
If you would: Before Clicking: Let me know if this helped you, or if you have any additional information or questions. Feel Free to contact me at FixYa.com!
Again my apologies...


1990 Lexus LS... | Answered on Mar 06, 2010 | 279 views

First check all of the fusses first and if you can't find a blown fuss than you can take it to any auto shop and they can test it for you

1990 Lexus LS... | Answered on Mar 05, 2010 | 160 views

I would inspect your wires at the starter. If you live up north then corrosion is bad, clean all wires going to starter. then clean wires to back of alternator. I seriously doubt that alternator is the problem, but if you remove it you can have it tested for free at most parts stores.

1990 Lexus LS... | Answered on May 16, 2010 | 460 views

You probably blew a fuse. Check all your fuses under the dash and under the hood.

1990 Lexus LS... | Answered on Feb 19, 2010 | 59 views

if replaced fuel pump because of not enough fuel pressure they should have checked the fuel regulator, could have bad fuel regulator

1990 Lexus LS... | Answered on Feb 07, 2010 | 370 views

re tighten the bolts or that pump was faulty take it back to the place that put it on and tell them to do it right this time!!!

1990 Lexus LS... | Answered on Jan 14, 2010 | 39 views

Fuel tank: 22.5 Gls.

More details in Lexus LS400

I hope helps with this (remember rated this help) Good luck.

1990 Lexus LS... | Answered on Jan 04, 2010 | 435 views

IT sounds like he did something wrong with the wiring in your car. I would take it back to him and demand that he checks his work and makes sure that all is working properly. If he says he needs to charge I would then tell him that you are getting a lawyer take it to another installer and make him pay for all the work to fix the car. This happens all the time and it is because they wired something backwards

1990 Lexus LS... | Answered on Jan 02, 2010 | 252 views

Check your large main fuses, these are block type devices.Sounds like you blew a big one.
Sometimes there is an extra set right beside the positive cable clamp.
In future disconnect the battery when working on electrical, just in case.

1990 Lexus LS... | Answered on Dec 29, 2009 | 35 views

yes and you need special tools and equipment to properly vaccuum out the sytem before recharging it.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/sean_54c3a3dc48a7773c

1990 Lexus LS... | Answered on Nov 18, 2009 | 122 views

Right side frame rail near rear wheel well

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/sean_54c3a3dc48a7773c

1990 Lexus LS... | Answered on Nov 16, 2009 | 39 views

hi you will have to state the alarm and emo because you have put it in safe mode thanks alot and try aa thanks ben

1990 Lexus LS... | Answered on Nov 16, 2009 | 126 views

yer right,,,its a dam lexus??? there nothing but problems when they go wrong,,, not that they go wrong often, but when they do??????
i realy cant think of a way you could do what you wont to do,,,,, but i can think of a way to put it right, take it into the lexus dealer they will fix the alarm for you,,,only one thing that springs to mind is when did you last change the kye fob batterys?????
however when you do change them do it very very fast,, or you lose the coad for the alarm???
then it wont go at all,,, its a lexus!!! yuck!

1990 Lexus LS... | Answered on Nov 05, 2009 | 428 views

yes have the computer repaired and this should fix the problem. these cars are known for have the computers go bad.

1990 Lexus LS... | Answered on Oct 12, 2009 | 644 views

find the fuses for it

1990 Lexus LS... | Answered on Sep 22, 2009 | 832 views


1990 Lexus LS... | Answered on Sep 12, 2009 | 675 views


1990 Lexus LS... | Answered on Aug 26, 2009 | 168 views

sitting in the car looking out the windsheild. your left and right

1990 Lexus LS... | Answered on Aug 24, 2009 | 72 views

sounds to me like an idle air control valve. if the car starts and runs but then dies immediately then most likely thats it. it happens all the time on the 3.0 v6. you dont need to replace it however, just take it to a dealer or an aftermarket shop and have them clean it out. Id stick with a lexus/toyota shop though just because they will do it right because they have seen it alot.

1990 Lexus LS... | Answered on Aug 23, 2009 | 273 views

Most engines today run very hot intentionally (an engine is a heat pump and is most efficient when the most heat is being made, but below the heat level that will cause it to self destruct) Many competent shops have a "heat gun" that can accurately determine if the engine is too hot, or normal. If a fan problem is detected, the system needs to be tested to determine if it is the fan motor, relay, sensor or wiring/computer that is causing it. Since your gauge reading appears normal, you may not have a real problem, aside from that you can't touch the engine when it's hot, but you don't do that much while driving!

1990 Lexus LS... | Answered on Dec 29, 2009 | 110 views

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