Question about BMW 750

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My 94 bmw 740i wont start after you shutitoff sometimes,it will work fine then one day it just doesnt start, some times it will start the next day and sometimesit wont its like im losingpower to the fuel pump,ive checked the fuses and replaced the pump and filters, it like a spoiled little brat or theres a grimlin in there somewere

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  • wnattell May 14, 2009

    to tse22. thank you, i took off the panel and all there was is speaker.Is there another location? 1994 740i

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All i can give you is a good place to start. The transmission control module- It is behind the bottom panel that houses the speaker on the passenger side (by your feet) it could be loose or it could be shorted. Also check if there is an aftermarket security system. These mess with the whole electrical system.

Posted on May 14, 2009

  • Tyson Strickland
    Tyson Strickland May 15, 2009

    It should be right behind there, it looks like a computer for a car, maybe move stuff around I can't remember exactly what is back there i might have to go look on mine.

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The TCM is in the box in the passenger rear side of the engine bay.  There are 4 screws holding the cover down and there are 2 circuit boards housed inside.

Posted on Jul 22, 2009

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