1991 Lexus LS 400 Logo
Steve Grant Posted on May 30, 2015
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Where is the fuel pressure regulator on a 1991 Lexus LS 400

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paulmacintyre

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  • Lexus Master 3,218 Answers
  • Posted on May 30, 2015
paulmacintyre
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Joined: Apr 04, 2015
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Most all pressure regulators are located on the fuel rail under the hood. It should have a vacuum line attached to it

5 Related Answers

txkjun

John Weathers

  • 409 Answers
  • Posted on Feb 15, 2009

SOURCE: 1996 Lexus LS 400 high pressure hose replaced

The leak could be in the steering rack.

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Anonymous

  • 1 Answer
  • Posted on Mar 04, 2009

SOURCE: Fuel Pump

I have a 92 lexus and they had to take my whole backseat out and drop the gas tank to get to the fuel pump.The fuel pump is down by the gas tank

Service Dude

Jonathan Van Rensburg

  • 201 Answers
  • Posted on Apr 03, 2009

SOURCE: what procedures do I take when removing and

Im not sure where the lexus starter is located but here is your standard steps.

  1. Remove battery positive wire " very Important "
  2. remove wires from starter mark if you cant remember or use your cell phone take a photo of wires.
  3. remove the Positive red thick wire
  4. and solenoid wire
  5. usually most starters have 2 to 3 bolts the starter sits usually on the gearbox near the engine.
  6. Out of experience I wont recommend a refurbished starter rather go for a new one.
Hope this helps

mecanica03

ROBERT GARCIA

  • 926 Answers
  • Posted on Apr 13, 2009

SOURCE: 1990 Lexus ls 400 transmission

yes, no problem

Anonymous

  • 1 Answer
  • Posted on Oct 30, 2009

SOURCE: radio locked 1991 lexus ls400

do you know how to reset radio code lexus ls 400 /1991

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0helpful
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Where is fuel pressure regulator in 1996 Lexus LS 400

The fuel pressure should be on the fuel rail that feeds gas into the intake manifold.
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Exhaust decel popping

Or maybe too much fuel-backfiring in the exhaust is the burning of the unburnt fuel in the exhaust. Check the fuel pressure. You can rent fuel pressure gauges at autozone, I believe. If too low, possibly a bad filter or bad pump. If too high, test the fuel pressure regulator. a failed regulator can let extra gas into the engine through the vacuum line on it. Take off the vacuum line to the regulator, and watch the regulator for a minute with the engine running. If gas starts oozing out of the vacuum port at the pressure regulator, the regulator has failed and must be replaced.
If pressure is correct, at least you have eliminated that as a problem. Check the air filter, check spark plugs and plug gaps, more or less back to basic tune up.
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Remove ecm 1996 lexus ls 400

run fault codes and replace faulty sensors. have a fuel pressure . Check injectors for correct operationtest done on the fuel manifold to test fuel pressure regulator. pump and filters/
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Where is the fuel emergancy shut of valve in a lexus 91 Ls 400

Toyota products usually don't use a shut-off for the fuel system.
If the fuel pressure is low, you would need to check the fuel pump relay for power and then the pump.
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Car wont accelerate over 20 mph and when i let off the gas it doesnt coast at all

Check your fuel pressure at the regulator. If it isn't up to pressure you go no where.
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Hello the car blows black smoke and runs rough when going slow. at higher speeds runs better. I just bought it and I don't believe it will pass the smog here in california

Your fuel pressure regulator is allowing to much fuel into the system.
You should have someone plug a OBD II reader in and pull any codes.
Please let me know.
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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
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Brake lights stay on 1991 Lexus LS 400

Simple fix... Just replace the brake light switch. It is located on the brake pedal arm about 6 inches above the pedal, it will have a plug going to it as well.
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Where's the fuel sensor located in the lexus ls 400? my lexus would'n star.

if your talking about thew gas gauge it is in the tank.
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Fuel Pump

Hi.....
On your 91 Lexus ls 400.
If you remove the Rear passanger seat.
You will have axces to the fuel pump.
Remove the metal cover . Disconnect the wire harnes,
Disconnect the lines.
removing the nuts you will able to remove the fuel pump.

Ok.. I hope this help on your question.
Thank you for use fixya...
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