2004 Lexus LS 430 cannot start

  • 1 POST
  • 2004 LEXUS LS 430

Electrical problem
2004 Lexus LS 430 V8 Two Wheel Drive Automatic 85000 miles

My car cannot start.

I tried to jump start it with another car. It sounds the same and still could not start.

My friend said it could be the starter.

Can you help?

Thank you

Do you
have the same problem?
Thursday, October 14th, 2010 AT 8:29 AM

1 Reply

  • 77,150 POSTS

Pick your symptoms below check it and get back with some testing results

Cranks but no start condition:

Get a helper disconnect a sparkplug wire or 2 and ground it to the engine at least 3/16 away from ground -have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs, coil's resistances, distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it.

If both fuel and spark is present-check the valve and ignition timing, this will lead you to problems
with compression and valves opening and closing at the wrong time/broken or jumped timing

No crank at all/nothing/nada when key is engage to starting position

Could be a blown fusible link, the starter, starter relay, clutch switch/park and neutral switch/transmission position switch and ignition switch assuming the battery and connections are good. Note:If it doesn't apply disregard.

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Thursday, October 14th, 2010 AT 11:01 AM

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