Question about 1995 Lexus LS 400

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My 1995 Lexus ls400 will not accelerate properly when you press

The gas pedal. It will accelerate if you barley press the gas, but at a very slow rate. Can you help?

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  • 3 Answers

Possiblyclogged(or almost clogged) fuel filter,ive ran into this quite a few times,if not clarify w/more detail?

Posted on Feb 28, 2009

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My 1995 Lexus LS400 has 120-130 psi compression in all 8 cylinders, does anyone KNOW what factory specifications are?


1995 Lexus LS400 specifications, information, data, photos ...

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1995 Lexus LS400 automobile specifications & information. ... The Lexus LS400's engine is a naturally aspirated petrol, 4 litre, double overhead ... 4 valves per cylinder... bmep (brake mean effective pressure), 1171.5 kPa (169.9 psi ).

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For this types of problem,there are few help links.I suggest you to click the link below and go through the troubleshooting procedure :-----Car only starts when gas pedal is pressed? http://technoanswers.blogspot.com/2012/01/car-only-starts-when-gas-pedal-is.html-----------Car won't start without hitting the gas pedal? http://schematicsdiagram.blogspot.com/2011/12/car-wont-start-without-hitting-gas.html
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1993 Lexus Ls400 loss of power a 2500-3000rpm when you accelerate hard on the gas pedel, hower if you press down on the gas pedal slowly the power will increase all the way up to 6000rps with no power...


Sounds like your fuel filter is getting clogged up. Get that changed and it will be fixed. Should be an easy, cheap fix. Hope this helps, James Booth :))

May 17, 2011 | 1993 Lexus Ls 400

1 Answer

Car doesn't respond when gas pedal is pushed when it is driven in hot weather; engine does not stall (1991 lexus ls400


I had the same problem with my 1992 LS400. My Lexus mechanic fixed it by replacing the MAF(Mass Air Flow).

This used to drive me crazy when the weather was hot.

Oct 25, 2010 | 1991 Lexus LS 400

1 Answer

1993 Lexus Ls400 loss of power a 2500-3000rpm when you accelerate hard on the gas pedel, hower if you press down on the gas pedal slowly the power will increase all the way up to 6000rps with no power...


Wish I had an answer - sounds very much like a problem I am having with my '92 LS400. I have a parts car, and have changed out the ECM, fuel pump, injectors, fuel pilter, fuel pressure regulator, ran the can with exhaust unbolted (check for clogged CATs, checked out my timing belt for slippage amoung other things, and nothing works. I have no check engine light on. Do you?


Jun 30, 2010 | 1991 Lexus LS 400

1 Answer

95 Lexus ls400, replaced the master cylinder and


check the vacum lines going to the brake booster. if everything is connected properly you may need a new booster.

Oct 01, 2009 | 1995 Lexus LS 400

2 Answers

1993 Lexus Ls400 loss of power at 2500-3000rpm


Check your MAF and MAP sensor. The first 80% of your throttle signal from the TPS works with the O2 sensor to try to keep the air fuel ratio to 14.7 to 1 with the ECM controlling the fuel injector spray time and timing the ignition. After the 80% to WOT the ECM puts the O2 sensor in to an open loop and takes the Reading form the MAF and MAP sensor to run the engine richer so there will not be any Detonation to the engine and burning holes in the valves for running too lean. That is why it always feel like you get a little more when you ease off on the gas peddle from WOT. Recap check the TPS, MAF,and MAP sensor and wires to those sensors, if you can get the car scanned that would be great and you may find out which sensor may have gone bad, the other thing to is the fuel pressure regulator may be going bad and at WOT the pressure may be to high causing it to run to rich causing the loss of power. Good luck and hope this helps. 

Jul 04, 2009 | 1991 Lexus LS 400

1 Answer

1993 Lexus Ls400 loss of power a 2500-3000rpm when you accelerate hard on the gas pedel, however if you press down on the gas pedal slowly the power will increase all the way up to 6000rps with no power...


It sounds like a fuel delivery issue so it could be many things such as low fuel pressure from the pump,clogged or partially pluged fuel filter, a malfunctioning throttle posisitioning sensor (if you have a check engine light on) or if its turbo it could be turbo lag etc.

Jul 04, 2009 | 1991 Lexus LS 400

1 Answer

Remote for Lexus LS400


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