Question about 1992 Lexus Sc 300

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I have a 1992 lexus sc300 that start up fine and run fine but when you turn off. 2 to 3 min. later.when you turn on, it would start and die. start and die. wait about 3min or so it would start up and run fine like nothing happen. *the mass air flow sensor is replace,the spark plug,the distributor,both O2 sensor,the battery,the water pump,the timing belt,the throttle body. All been replace. tested coil and alternator and the are fine. Also when testing for smoke check, it didn't pass,running too rich. i'm very thankful if anybody can help me out.

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  • Chio Saechao
    Chio Saechao Jun 04, 2009

    were is the main relay location at?
    how can i test it,to see if it's bad?

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Yes mine is doing the same , and it is the main relay, my sisters honda did the same thing and it was the main relay!

Posted on Feb 12, 2010

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Your main relay is messed up. common problem

Posted on Jun 03, 2009

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