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    M30 problems

    my brother is having problems with his 1988 635csi. he says that when he first starts his car everything is fine but as soon as it heats up the engine starts hesitating. He presses the gas and it chugs to start going but as soon as it hits higher RPMs it goes smooth again. Any body know anything that will help.
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    #2
    Maybe an in tank fuel pump?
    Slicktop City!

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      #3
      Does that thing have a throttle position switch, or a throttle position sensor?

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        #4
        I was thinking that it could be a fuel pump problem as well, although i haven't driven his car to experience what he is talking about. I am only going on what he told me.

        Does that thing have a throttle position switch, or a throttle position sensor?
        I have no idea if it has either TPS's
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