Mechanics

LEXUS LS 400 FUEL PUMP PROBLEM

1993 Lexus LS 400

Engine Mechanical problem
1993 Lexus LS 400 Automatic 226000 miles

93 ls 400 intially the car was running poor lack of power misfiring. Got code 13 and 41. Needed a water pump and front seal also. Put water pump and seal in and put it back together. It cranks barely and dies. Try to start again and its just turnig over. What could be wrong?
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Kopeye
September 28, 2010.




Suspect timing belt not aligned properly see diagram


http://www.2carpros.com/forum/automotive_pictures/198357_Graphic_627.jpg

have problem with codes been repaired?

Docfixit
Sep 28, 2010.
The marks on 93 ls 400 are different. Line up crankshaft on 0 and the two cams line up at the top. Got code 13 and 41. Put another throttle position sensor on and another crank sensor and got car started but it has no power and dies out on me any ideas
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Tiny
Kopeye
Sep 28, 2010.
Where is the fuel pump and does the fuel tank have to be dropped. Also what is the fuel pressure suppose to be?

Tiny
Kopeye
Sep 28, 2010.
Diagram is 4.0L 93 LS 400


http://www.2carpros.com/forum/automotive_pictures/198357_Graphic_630.jpg


Fuel pump can be accessed by removing rear seat and lugage mat. Cover plte to get at pump. Pump 28-34 psi

Docfixit
Sep 29, 2010.
Thanks for the information. Can the spark plug wires be tested with digital multimeter? And what should the wires read?

Tiny
Kopeye
Sep 29, 2010.
1000 ohms for each inch is passable

Docfixit
Sep 30, 2010.

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