Question about 1993 Lexus Ls 400

2 Answers

I need to know to install a fuel pump in a 1993 lexus ls 400

Posted by on

  • j979666 Jul 11, 2010

    I need step by step instructions on how to replace my fuel pump on my 1993 lexus ls400

×

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Lexus Master
  • 2,359 Answers

Before you start,you has to make sure there is 12V going to the fuel pump when the key is at the ON position.

Check for +12 volt at fuel pump relay output.

Fuel pump safety switch and/or fuel pump relay can be bad.

I need to know to install a fuel pump in a 1993 - 022b72f.jpg
Make sure you purchase a Bosch pump (good quality pump) and a NEW stainer. (see picture below)
Some shop sell the in two different boxes. Some manufacture see both as a kit.

5d0d480.jpg
DO NOT ATTEMPT to clean and save the stainer. Get a new one.
2fb8040.jpg


DANGER!!

You must perform this job in a well ventilated area.

Disconnect the positive battery cable and shut off all electrical product before you start.

You has to drain the fuel tank and store the fuel in a DOT approved gasoline container.

Disconnect gas filler hose and EVAP lines

You has to drop the fuel tank to gain access to the top of the fuel tank.

Gasoline is about 8 pounds per gallon. You may need help to drop the tankI need to know to install a fuel pump in a 1993 - 4efce74.jpgank is almost empty.

Here is the top view of your fuel pump.
4efce74.jpg

Mark the orientation of the existing wiring/pump and re-install the new pump wiring.

The strainer is very long.

Take your time and insert the stainer and pump vertically into the tank.

Re-check the wiring.

Do a quick 20 second test by reconnect the positive cable and ignition ON. You should hear the pump energize.

Disconnect the positive after test.

You will need two or more person to lift and fasten the tank bands.

Re-connect gas filler line and EVAP lines.
FAIL TO secure these lines will cause CHECK ENGINE LIGHT and CODE.


Full tank with 1 gallon of gasoline,check for leaks

Full the remainder gas after full inspection.


A aged gas cap will leak small amount of gas vapor.
You may fail state emission inspection just because of a leaky gas cap.
Replace the cap before you are due for the next safety/emission inspection.

I hope this answer your question.

Please reply if you need addition information.

Posted on Jul 11, 2010

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 2,272 Answers

You will have to remove your back seat to gain access to fuel pump. Fuel tank is located in trunk. No need to take fuel tank down.

  • To replace a mechanical fuel pump, remove the inlet and outlet lines at the pump.
  • Use a plug to stop the flow of fuel from the tank.
  • With the correct size socket wrench, remove mounting bolts. Then, remove the pump from the engine.
  • Clean the old gasket material from the engine block.
  • Apply gasket sealer to the mounting surface on the engine and to the threads of the mounting bolts.
  • Install the new gasket, then position the pump by tilting it either toward or away from the block to correctly place the lever against the cam.
  • If the pump is driven by a pushrod, the rod must be held up to permit the rocker arm to go under it.
  • When the pump is properly positioned, there should be an internal squeaking noise with each movement of the pump.
  • Tighten the mounting bolts firmly.
  • Attach the inlet and outlet lines, start the engine, and then check for leaks.

Thanks. Keep updated for any more query. You can rate this solution and show your appreciation.

    Posted on Jul 11, 2010

    1 Suggested Answer

    6ya6ya
    • 2 Answers

    SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

    Hi,
    a 6ya expert can help you resolve that issue over the phone in a minute or two.
    best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
    the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
    click here to download the app (for users in the US for now) and get all the help you need.
    goodluck!

    Posted on Jan 02, 2017

    Add Your Answer

    Uploading: 0%

    my-video-file.mp4

    Complete. Click "Add" to insert your video. Add

    ×

    Loading...
    Loading...

    Related Questions:

    2 Answers

    I need diagram of fan belt for Lexus LS 400 1993 model.


    go on youtube you will find your answer there

    Feb 18, 2015 | 1993 Lexus Ls 400

    1 Answer

    Want to know if my alternator is under my power stering pump on 1993 lexus ls 400


    Yes
    You may have to remove the power steering pump in order to get your hands down in the passenger side of the engine to remove it.
    when reinstalling pump be careful not to let any power steering fluid drip down into alternator. That could cause a premature failure of the alternator.

    Jan 27, 2014 | 1993 Lexus Ls 400

    1 Answer

    Where is the fuel pump relay on a 1993 lexus 400


    Hi,

    The fuel pump relay is located at the front right inner area of the engine compartment just past the strut tower. it should be in a box by itself labelled fp relay.


    Have a nice day!!!

    Aug 04, 2010 | 1993 Lexus Ls 400

    2 Answers

    Need to locate fuel filter on 93 ls 400 lexus


    under the car in front of the rear wheel on driver's side

    Feb 28, 2010 | 1993 Lexus Ls 400

    1 Answer

    Not starting


    first you must check to see if there is spark, then check to see if you have fuel pressure, let me know and we will go from there

    Jan 31, 2010 | 1993 Lexus Ls 400

    1 Answer

    Fuel pump instructions


    remove trim in back seat into trunk, at find the fuel tank , look for a round cap with 8-10 bolts and 2 wires plug, open this cap and fuel pump goes

    Dec 28, 2008 | 1991 Lexus LS 400

    4 Answers

    93 lexus LS 400 how do I replace the fuel pump?


    You will have to remove your back seat to gain access to fuel pump. Fuel tank is located in trunk. No need to take fuel tank down.

    Dec 07, 2008 | 1993 Lexus Ls 400

    Not finding what you are looking for?
    Cars & Trucks Logo

    Related Topics:

    185 people viewed this question

    Ask a Question

    Usually answered in minutes!

    Top Lexus Experts

    yadayada
    yadayada

    Level 3 Expert

    75822 Answers

    ROBERT GARCIA
    ROBERT GARCIA

    Level 3 Expert

    881 Answers

    Colin Stickland
    Colin Stickland

    Level 3 Expert

    22156 Answers

    Are you a Lexus Expert? Answer questions, earn points and help others

    Answer questions

    Manuals & User Guides

    Loading...