obd1 s52 starting problems, help!

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  • miles318
    Member
    • Sep 2008
    • 76

    #1

    obd1 s52 starting problems, help!

    my obd1 s52 swapped e30 died suddenly at an intersection a couple weeks ago and hasnt started since.

    it sort of starts. revs up to about 800 then dies. if you give it gas itl run for a few seconds, but it runs extremely rough and smells like its running heinously rich.

    so far we replaced the fpr because we thought it was over fueling, then the cam position sensor, and crank position sensor because the cam sensor failed a resistance test and we thought the timing might have been off.

    we have tried two ecus, one is know to be bad and im questioning whether the other one is bad as well. weve tried two mafs also, i dont know where to go from here

    its killing me not being able to drive my car:(

    any help or suggestions would be much appreciated!
  • graphikg
    Banned
    • Jan 2008
    • 1614

    #2
    Check fuel pressure... It could be the fuel pump. Or check your vacuum lines for a simple cracked vacuum hose which can cause problems like this.

    Comment

    • Chris916
      Advanced Member
      • Nov 2010
      • 183

      #3
      perhaps the maf?

      Comment

      • gazellebeigem3
        No R3VLimiter
        • Jun 2005
        • 3712

        #4
        vacuum leak? Check the pcv hoses and such for holes/disconnected

        Comment

        • kalib0y
          No R3VLimiter
          • Dec 2004
          • 3620

          #5
          check for vacuum leaks or cracks in your intake boot
          95 7.1L 16V E36 M3
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          Comment

          • bloodshot-e30
            E30 Fanatic
            • Mar 2010
            • 1494

            #6
            check crank sensor
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            Comment

            • miles318
              Member
              • Sep 2008
              • 76

              #7
              ok ill get out and check for leaks. i dont think that should be an issue though, we used all new tubes and buttoned everything down well

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