LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

LS400 Model 1993 goes Slow

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Old 10-22-07, 01:28 AM
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alaiwat
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Default LS400 Model 1993 goes Slow

I have Lexus LS400, Model 1993, and it started to go very slow no matter what force you put on the accelerator. The RPM meter does does not exceed 1750, even in "N" gear position. Also, black smoke comes from the exhausts. I replaced the sparking plugs and got the injectors cleaned, but with no luck.

Please help.

Last edited by alaiwat; 10-22-07 at 02:50 AM.
Old 10-22-07, 06:35 AM
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19psi
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mass air sensor is my bet.
Old 10-22-07, 07:54 AM
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LiCelsior
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yea try unplugging ur MAF sensor and see if that is any better.
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