Page 1 of 2 12 LastLast
Results 1 to 10 of 14

Thread: e34 Starting Problem ( Strange one )

  1. #1

    Default e34 Starting Problem ( Strange one )

    Hey all,
    I am a Neewbee on this forum so first , Hello to all members and i hope i can be a solid contributer to this forum in the future.
    Ok now the problem .
    every once in a while the car just wont crank, no sound ,no click of the starter , check control shows all ok , and when in the crank position you can see the dash lights dim just a tad as if the car was cranking but its not, it seems to happen after i drive in heavy traffic or very hot days but the temp is normal about halfway all the time. It lasts for between 5 mins to the last time i got stuck 1hr. I even pulled the relays from under the hood to see if one was stuck open or extremly hot but could not find one.
    Any info would be great. E34 1995 M50 Right hand drive.

    Thanks
    Strap

  2. #2
    Join Date
    Jun 2004
    Location
    Melbourne, Australia
    Posts
    1,305

    Default

    Quote Originally Posted by Strap
    Hey all,
    I am a Neewbee on this forum so first , Hello to all members and i hope i can be a solid contributer to this forum in the future.
    Ok now the problem .
    every once in a while the car just wont crank, no sound ,no click of the starter , check control shows all ok , and when in the crank position you can see the dash lights dim just a tad as if the car was cranking but its not, it seems to happen after i drive in heavy traffic or very hot days but the temp is normal about halfway all the time. It lasts for between 5 mins to the last time i got stuck 1hr. I even pulled the relays from under the hood to see if one was stuck open or extremly hot but could not find one.
    Any info would be great. E34 1995 M50 Right hand drive.

    Thanks
    Strap
    First I'd check for dirty battery terminals.
    Also check engine and body earth cables.
    Other possibilities maybe a sticking starter relay or starter solenoid.

    When it does it again have someone try to crank it over while you give the starter motor solenoid a couple of sharp cracks with an appropriate blunt object!

    Good Luck!

    1990 E34 535iA, 215,000kms (130,000 miles).
    Dual Climate, Rear Headrests, Rollerblind, M-Tech Wheel,
    Memory Seats, EAT Chip, T-Stars.

  3. #3

    Default

    Yep i was thinking about giving it a smack when i was stuck last time
    . Checked battery terms and main ground points even a meterd resitance test between the battery under the seat and the left front headlight to check for solid ground.all good on the power but i have to find where the starting relays are. anyone no which location?

  4. #4
    Join Date
    Nov 2004
    Posts
    445

    Default

    Strap,

    Do you know if your key had a chip in it ?. DWS. If it has , this maybe acting up. Cars with DWS security will send and electronic message to the car and if that did not match the expected message. It will show the symptom you had. Everything looks ok will not Click!.
    My 95 touring has no chip. Some may have it.

  5. #5

    Default

    Quote Originally Posted by emw525E34
    Strap,

    Do you know if your key had a chip in it ?. DWS. If it has , this maybe acting up. Cars with DWS security will send and electronic message to the car and if that did not match the expected message. It will show the symptom you had. Everything looks ok will not Click!.
    My 95 touring has no chip. Some may have it.

    emw525e34,
    thanks for that idea, but no chip in mine either. That is the exact symtom im having though. the dealer said the car was fine when they checked it last week then i got stuck 2 hrs later@#$#%# so im hoping to find out whats causing this wierd problem. it only happens so far after im driving in heavy traffic with the a/c going for a long time . but it doesent over heat so im really lost. I can drive all day sit in 95deg( f ) heat in traffic and the car is fine without the air-con on and its fine , run the aircon for 10-15 mins in traffic and after i stop the car park it for awhile it wont crank no sound no clicks , battery is full charge ( i have a digital gauge cluster i added ) and it acts like there is a starter cut-off ? so strage

    So im still stumped .
    Strap

  6. #6
    Join Date
    Jan 2004
    Location
    Malaysia
    Posts
    65

    Default

    Quote Originally Posted by Strap
    emw525e34,
    thanks for that idea, but no chip in mine either. That is the exact symtom im having though. the dealer said the car was fine when they checked it last week then i got stuck 2 hrs later@#$#%# so im hoping to find out whats causing this wierd problem. it only happens so far after im driving in heavy traffic with the a/c going for a long time . but it doesent over heat so im really lost. I can drive all day sit in 95deg( f ) heat in traffic and the car is fine without the air-con on and its fine , run the aircon for 10-15 mins in traffic and after i stop the car park it for awhile it wont crank no sound no clicks , battery is full charge ( i have a digital gauge cluster i added ) and it acts like there is a starter cut-off ? so strage

    So im still stumped .
    Strap
    The starter solenoid is starved of the juice it needs to crank the engine from the battery.The cause could be an open circuit due to the heat,or hi resistance somwhere.My e30 exhibited this symptom.A parallel solenoid fixed this.Try fitting a new starter solenoid.However,a cheaper way is to run a parallel solenoid.

  7. #7
    Join Date
    Mar 2005
    Location
    Bethlehem, PA
    Posts
    661

    Default

    Where are you measuring the 12V line? Unless it's directly at the battery, it might be misleading to assume that you're seeing the true value. Your symptoms sound to me like a simple discharged/weak battery. If you're sitting in traffic with the A/C on, you WILL drain the battery. Unless you stick a hydrometer in there and actually measure the SG of the electrolyte, you don't know what's going on.

  8. #8

    Default e34 Starting Problem ( Strange one )

    I had exactly the same symptoms as Strap. Went on for months, gave excuses about hot weather etc. until the misses got cheesed off both with me & Beemer.
    I pinpointed it down to the same symptom as if the alarm was on. Not even a click when you turn the key and other times it just goes vroooom with one crank. Decided renew alarm system. Problem solved. A few days later wife complained again. It won't start but makes a rat tat tat tat noise. at least now it's not just nothing like before, suspected battery. Measured the battery and changed it. No problem so far.

    Good luck Strap




    1989 535i
    143K

  9. #9
    Join Date
    Nov 2004
    Location
    Uganda, East Africa
    Posts
    93

    Default

    How about checking the fusible links or ckeck Bruno's site on fusible links info.

    WWW.BMWE34.NET

  10. #10

    Default yo dude check the trans..

    just wondering.. is it an auto.. have you tried to move the gearstick in front o r about when starting.... it can be that the contact for the safe starting which prevents you starting in other gear positions other than p may be acting up.. you may have to joggle the gearstick around a bit.. whilst starting.

Page 1 of 2 12 LastLast

Similar Threads

  1. Strange starting problem
    By hlenoble in forum 5 Series BMW
    Replies: 6
    Last Post: 10-10-2008, 08:44 PM
  2. Strange starting sound
    By nirvana19 in forum 5 Series BMW
    Replies: 3
    Last Post: 06-13-2007, 06:58 PM
  3. Strange starting problem
    By mlrwy in forum 5 Series BMW
    Replies: 4
    Last Post: 09-17-2006, 08:21 PM
  4. Strange Starting
    By Mr Toad in forum 5 Series BMW
    Replies: 4
    Last Post: 03-15-2006, 12:17 PM
  5. Strange 535i starting Problem???
    By islandphile in forum 5 Series BMW
    Replies: 15
    Last Post: 06-07-2004, 01:43 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •