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Thread: No start condition. No fuel/spark.

  1. #1
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    No start condition. No fuel/spark.

    94 325i 5 speed.

    Having a bit of an issue with a no start. Shut my car off when I got home and went inside. Next morning go to fire her up and it wouldn't start, only turn over. Currently not getting spark or fuel.
    Pulled the computer out, doesn't smell burnt and there is no visible water damage. Any ideas on what this could be, is this pointing to the crank position sensor?

  2. #2
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    Quote Originally Posted by Chroniverous View Post
    94 325i 5 speed.

    Having a bit of an issue with a no start. Shut my car off when I got home and went inside. Next morning go to fire her up and it wouldn't start, only turn over. Currently not getting spark or fuel.
    Pulled the computer out, doesn't smell burnt and there is no visible water damage. Any ideas on what this could be, is this pointing to the crank position sensor?
    I had a similar problem, ended up replacing all the sensors. While I think my issue was the fpr, you may have a dead pump or dme as you suggest. Get out the volt meter, pull the rear seat out and check to see if the pump is getting current. Check and see if your coils are getting current. If neither are getting current you could have dead dme or a short/faulty ground.

  3. #3
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    Just went out and tested the crank sensor and it's dead. And that's after removing the seat and checking both fuel pumps and coils. Recently replaced the fuel pressure regulator and everything seems fine with that.

    I'm hoping that this fixes it. Most of the sensors are new and I have replace them already including TPS, both knocks, cam position sensor, couple other in there too as well as fuel filter.

    These were all replaced while they were running too just maintenance items.

  4. #4
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    But you got current at the pump and coils? If you did it's most likely not the DME. Replace the crank sensor, I got a new one and it made a world of difference.

  5. #5
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    That's what I mean haha. Bad crank sensor

  6. #6
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    Did you figure this out?

  7. #7
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    Tested the crank sensor and I have. No resistance whatsoever. I have a new one coming tommorow will test it before installing it to make sure it wasn't my multimeter. Will update you tommorow

  8. #8
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    Tested the new Crank Sensor and it actually has a proper read out. Will be installing after work, will let you know if it fixes the issues!

  9. #9
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    how many Ohm does a good one (the new one) have ?

  10. #10
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    Quote Originally Posted by samy01 View Post
    how many Ohm does a good one (the new one) have ?
    The Bentley manual states around 1200 I believe but I have read multiple times that its an error and it should actually be around 6-700 ohms give or take 100. Mine reads 1200 on initial contact then drops down to 700ohms and holds.

  11. #11
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    Will it start and run for a few seconds on starting fluid?

  12. #12
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    No need for that just install the new cps and see if she goes.

  13. #13
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    Correct me if I'm wrong but, CPS should read 540 +/- 10% not 1200 as Bentley manual states..

  14. #14
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    Thats what I've heard. Didnt have time to install is after work today. Will install tommorow and update

  15. #15
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    Quote Originally Posted by Chroniverous View Post
    Thats what I've heard. Didnt have time to install is after work today. Will install tommorow and update
    Did you get around to doing this today? My crank position sensor is seized.. bang, twisted, and pried with no avail.. probably going to have to drain the coolant and remove the radiator and hoses to gain better access.. what a pita

  16. #16
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    Will it start and run for a few seconds on starting fluid?

  17. #17
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    Quote Originally Posted by BimmerJM325is View Post
    Did you get around to doing this today? My crank position sensor is seized.. bang, twisted, and pried with no avail.. probably going to have to drain the coolant and remove the radiator and hoses to gain better access.. what a pita
    So I replaced it last night, car runs but it now has a misfire that it didn't have before. -.-

    - - - Updated - - -

    Also, yes it was a pain to get it out mostly because of built up old dirt but it came out with a little wiggling. Still gonna have to look for the cause of this misfire after work today

  18. #18
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    Quote Originally Posted by Chroniverous View Post
    So I replaced it last night, car runs but it now has a misfire that it didn't have before. -.-

    - - - Updated - - -

    Also, yes it was a pain to get it out mostly because of built up old dirt but it came out with a little wiggling. Still gonna have to look for the cause of this misfire after work today
    Make sure all your coils are plugged in well as you removed them for testing.

  19. #19
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    Its definitely not the coils. I disconnected the MAF sensor while it was idling lumpy and the misfire went away immediately. Im going to test the MAF tonight now. Im thankful I have my G700FS to ride in the meantime XD

  20. #20
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    So I threw a code for MAF sensor, but I'm not sure if it's because I has it disconnected or because it's actually bad. Going to pull all coils tommorow morning and check for oil in the plug tubes. Doesnt explain the random misfire though unless a bad MAF will cause a misfire, it still misfired when I disconnected the MAF also.

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