ENGINE PERFORMANCE PROBLEM1993 LEXUS LS 400 V8 ...

1993 Lexus LS 400

Tiny

kopeye

September, 22, 2010 AT 9:10 AM

Engine Performance problem
1993 Lexus LS 400 V8 Two Wheel Drive Automatic

93 ls 400 is misfiring and has no power, when accelerator is pressed to floor it barely idles up and goes down. Smells like fumes

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16 Answers

Tiny

Wrenchtech

September, 22, 2010 AT 9:18 AM

Is the check engine light coming on at all? If so, and it should be, have the codes read and see where that points you.

Tiny

kopeye

September, 22, 2010 AT 7:35 PM

Got codes 13 and 41. Replaced throttle position sensor and no difference in performance

Tiny

Wrenchtech

September, 22, 2010 AT 7:41 PM

The other code is an issue in the Crank Sensor circuit. Both codes need to be troubleshooted.

Tiny

kopeye

September, 22, 2010 AT 10:25 PM

If I replace the crank sensor and it still runs like its misfiring and has no power then what

Tiny

Wrenchtech

September, 23, 2010 AT 4:21 AM

Nobody advised you to change the crank sensor. I said it had to be troubleshooted. You have to find the problem, not just throw parts at it. This isn't something that can be determined online.

Tiny

kopeye

September, 23, 2010 AT 8:20 AM

Well ive changed the plugs cap n rotors. Throttle position sensor. Could the timing be off?

Tiny

kopeye

September, 26, 2010 AT 8:38 PM

No spark on driver side rotor wires, but plenty on passenger side rotor wires. What causes this. Car wont crank

Tiny

Wrenchtech

September, 26, 2010 AT 8:44 PM

This system uses 2 coils and 2 ignitors so I would suspect that one or the other is bad for those cylinders. It would require some testing to determine which.

Tiny

kopeye

September, 26, 2010 AT 10:01 PM

Thanks for info do u know where the igniters are located on 93 ls 400

Tiny

kopeye

September, 26, 2010 AT 10:06 PM

I also got a code 14

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