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Thread: 1976 bmw 530i e12 starting problem

  1. #1
    Join Date
    Dec 2018
    Location
    Olympia wa
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    3
    My Cars
    1976 bmw 530i e12

    1976 bmw 530i e12 starting problem

    Hey guys, so my car ran fine a week ago. Drove it about 15 miles home from the guy I got it from. Only driven it a couple other times around town because I work a lot. Recently I was driving it and it started dying. So I figured maybe it was the timing and got it timed. Wasn’t that. Then I replaced the alternator, fuel pump, and coil pack, and it stil dies. More specifically I’ll start it now and 5 to 10 seconds after I start it it shuts off even if I try to give it gas to keep it alive. I was thinking it could be the fuel pressure regulator,idle control valve or crank positioning sensor. And I’m not any good with the m30b30 engines so I may be overlooking their locations because I do t know where they are at. Any help would be great if you’ve had this issue before. Thanks!!

  2. #2
    Join Date
    Jan 2005
    Location
    Japan
    Posts
    54,654
    My Cars
    11/88 E32 750iL+98 E36M3
    Moved from 5 series general to E28 forum, as we do not have a separate E12 sub forum.
    Shogun tricks and tips for the E32 series are HERE!

  3. #3
    Join Date
    Dec 2018
    Location
    Olympia wa
    Posts
    3
    My Cars
    1976 bmw 530i e12

    1976 bmw 530i e12

    Hey guys, so my car ran fine a week ago. Drove it about 15 miles home from the guy I got it from. Only driven it a couple other times around town because I work a lot. Recently I was driving it and it started dying. So I figured maybe it was the timing and got it timed. Wasn’t that. Then I replaced the alternator, fuel pump, and coil pack, and it stil dies. More specifically I’ll start it now and 5 to 10 seconds after I start it it shuts off even if I try to give it gas to keep it alive. I was thinking it could be the fuel pressure regulator,idle control valve or crank positioning sensor. And I’m not any good with the m30b30 engines so I may be overlooking their locations because I do t know where they are at. Any help would be great if you’ve had this issue before. Thanks!!

  4. #4
    Join Date
    May 2009
    Location
    Bangkok, Thailand
    Posts
    197
    My Cars
    5/93 E32 730i M30
    Quote Originally Posted by Macke e12 View Post
    Hey guys, so my car ran fine a week ago. Drove it about 15 miles home from the guy I got it from. Only driven it a couple other times around town because I work a lot. Recently I was driving it and it started dying. So I figured maybe it was the timing and got it timed. WasnÂ’t that. Then I replaced the alternator, fuel pump, and coil pack, and it stil dies. More specifically IÂ’ll start it now and 5 to 10 seconds after I start it it shuts off even if I try to give it gas to keep it alive. I was thinking it could be the fuel pressure regulator,idle control valve or crank positioning sensor. And IÂ’m not any good with the m30b30 engines so I may be overlooking their locations because I do t know where they are at. Any help would be great if youÂ’ve had this issue before. Thanks!!
    I would look at crank position sensor .. CPS ... on the M30B30 it is on front of engine .. drivers side (US) ... just below the Dist cap / or thermostat housing . Held in with a torx bolt .. usually pretty easy to remove ...
    Running and then stopping is one of the symptoms of a failing CPS . Given that you have already checked the fuel side of it and the coil ..

  5. #5
    Join Date
    Dec 2018
    Location
    Olympia wa
    Posts
    3
    My Cars
    1976 bmw 530i e12
    How do I check to make sure it works correctly. They’re expensive online

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