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Thread: E34 Cruise

  1. #1
    Join Date
    Feb 2004
    Location
    Perth Western Australia
    Posts
    1

    Default E34 Cruise

    cruise control 530i v8 '95 not working
    any ideas?? jack perth western australia

  2. #2
    Join Date
    Jan 2004
    Location
    Linden, NJ
    Posts
    59

    Default Safety Recall

    In the United States the cruise control had a safety recall. Check with your nearest BMW service center. Not sure if it applies on your continent, but its worth a try. Look here for more info.
    1995 530im
    151k nikasil miles

  3. #3
    guyer Guest

    Default Same problem

    I've got a '94 and the cruise doesn't work. I've read about the safety recall in other forums but I don't think my problem is related. The cruise simply doesn't work at all. I've checked the fuse but of course it couldn't be that easy. I've also asked my mechanic (friend) and he said he hasn't seen any e34 with cruise problems. I really need cruise! I'm on the road all the time!

  4. #4
    Join Date
    Dec 2003
    Location
    baton rouge, loserana
    Posts
    6,922

    Default

    out of all of those tsb's i didn't see anything about loose oil pump bolts on the v8's, i've seen em completely fall out, red locktight em in

    Quote Originally Posted by Mike
    In the United States the cruise control had a safety recall. Check with your nearest BMW service center. Not sure if it applies on your continent, but its worth a try. Look here for more info.
    all america wants is cold beer warm cat and a place to take a poop with a door on it

  5. #5
    Join Date
    Dec 2003
    Location
    Niagara on the Lake, Ontario, Canada
    Posts
    75

    Default cruise

    manual or auto...

    if manual, lift up on your clutch with your toe underneath....then try the cruise... do the same with the brake...worth a try
    Gordon Lawson
    Niagara on the Lake
    Ont., Canada
    1989 535i 5speed "Eat'n"

  6. #6
    guyer Guest

    Default Nope -- Automatic

    Do you think there is a computer module that is for cruise only? 'Cause cruise is the only thing that doesn't work.

  7. #7
    Join Date
    Dec 2003
    Location
    Coastal North Carolina
    Posts
    92

    Default The Cruise unit has a rheostat on the board...

    The rheostat tells the cruise control unit where the throttle is. On my 95 525iA, this rheostat would get dirty and carbonized and the cruise would stop working. On two occasions I removed the cruise control servo from the inner fender well, disconnected the throttle cable from the throttle body and put the unit on my bench. If you remove the cover from the cruise unit, (6-8 flat head screws), you can see how the mechanism works. It is a little tricky getting it apart and back together because the cable is attached to a short rubber belt that wraps around a spring-loaded spool (this is what pulls the cable) and you have to get that spring rewound and to put it all together.

    Once you get the cover off, you will see the contact points that need cleaning. Some Stabilant would probably be a good idea on the contact strips.

    It isn't too bad, just take your time. I wish I had taken pictures when I had the chance...

    HTH,
    Scott
    Wilmington, NC

    01 525iA For Sale
    Coming Soon: 2005 X3 3.0i
    05 Jeep GCL HEMI
    85 318iA SOLD
    96 Jeep GCL SOLD

  8. #8
    guyer Guest

    Default

    Thanks for the in-depth reply. To your recollection, is this cc servo under the brake booster right behind the driver's side high beam? Looks pretty difficult to remove.

    Also, should the throttle cable that connects to it follow the primary throttle movement all the time or only when the cc is engaged? It doesn't so I think that may be part of the problem.

    Aussie Jack -- Have you had any luck?

  9. #9
    Join Date
    Dec 2003
    Location
    Coastal North Carolina
    Posts
    92

    Default

    Quote Originally Posted by guyer
    Thanks for the in-depth reply. To your recollection, is this cc servo under the brake booster right behind the driver's side high beam? Looks pretty difficult to remove.

    Also, should the throttle cable that connects to it follow the primary throttle movement all the time or only when the cc is engaged? It doesn't so I think that may be part of the problem.

    Aussie Jack -- Have you had any luck?
    On the 525iA it was really easy to remove, driver's side, in front of the shock tower. I am not sure about the 540.

    I don't think the cable moves until the CC is engaged. If I recall correctly, there is a long metal rod at the end of the cc cable that slides along the throttle linkage when CC is not engaged.
    Scott
    Wilmington, NC

    01 525iA For Sale
    Coming Soon: 2005 X3 3.0i
    05 Jeep GCL HEMI
    85 318iA SOLD
    96 Jeep GCL SOLD

  10. #10
    Join Date
    Dec 2003
    Posts
    36

    Default

    A faulty brake switch will cause cruise to fail as well.

    http://www.bmwe34.net/e34main/Mainte...ake_switch.htm

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