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Thread: Cruise control intermittent working, ( faulty CIM possible?)

  1. #1
    Events Manager & Section Mod jon1.9cdti's Avatar
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    Default Cruise control intermittent working, ( faulty CIM possible?)

    ever since i got my vec the cruise has never worked properly and despite trying numerous things im still no closer to fixing it and now im wondering whether CIM could be causing the problem
    its a bit hit and miss if it will work at all and if it does engage, using indicators or hitting a bump turns it off,
    if however you hit the palm of hand on the end of the stalk it will then engage again

    so far i have done the following

    removed throttle body and checked solder joints
    replaced stalk twice
    cleaned all 4 contacts inside CIM where stalk connects
    tried wedging card between stalk
    tried wrapping tape around stalk to make a tighter fit
    checked clutch pedal spring and switch
    checked brake pedal spring and switch

  2. #2
    Regular Member TonyP2020's Avatar
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    If you have a spare stalk that you dont mind ruining, it might be worth cleaning the contacts and then soldering some solder onto the contacts at the end of the stalk and then filing the solder so that it's only about a 1mm thick, and then putting a small amout of vaseline on the contacts.
    Another thing, if you have trouble engaging the CC, have a look at the switch end of the stalk.
    When the top or bottom button is pressed you will see that plastic edge on the bit that moves contacts with the plastic edge/stop of the stalk.
    I filed the plastic bit that moves to let the switch have more movement.
    It is also worth making sure that the large (CC off) button is not sticking and making switch contact, sometimes pulling the off button out gently before trying to engage the CC might work too.
    I tried all the above, and it made some difference, but In the end I also bought a second stalk, and that one worked, but I also filed the end of the buttons anyway.
    You can dismantle the stalk, but only do so if you like putting fiddly things back together again.

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    Events Manager & Section Mod jon1.9cdti's Avatar
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    Quote Originally Posted by TonyP2020 View Post
    If you have a spare stalk that you dont mind ruining, it might be worth cleaning the contacts and then soldering some solder onto the contacts at the end of the stalk and then filing the solder so that it's only about a 1mm thick, and then putting a small amout of vaseline on the contacts.
    Another thing, if you have trouble engaging the CC, have a look at the switch end of the stalk.
    When the top or bottom button is pressed you will see that plastic edge on the bit that moves contacts with the plastic edge/stop of the stalk.
    I filed the plastic bit that moves to let the switch have more movement.
    It is also worth making sure that the large (CC off) button is not sticking and making switch contact, sometimes pulling the off button out gently before trying to engage the CC might work too.
    I tried all the above, and it made some difference, but In the end I also bought a second stalk, and that one worked, but I also filed the end of the buttons anyway.
    You can dismantle the stalk, but only do so if you like putting fiddly things back together again.
    Thanks for your input i have tried everything you suggested apart from filing the plastic bit, i modified my old stalk with solder as you suggested and was still no different!. like i say if i hit the stalk or even pull it out whilst driving and reinsert it the cruise will work until i use the indicators and thats why my conclusion of the CIM comes and and im wondering whether there is a dry joint in there somewhere

  4. #4
    Regular Member TonyP2020's Avatar
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    It is certainly possible that there is a problem in CIM, but I have never looked into/dismantled a CIM. Too scary.

    The only other thing, which has just sprung to mind, is the small knob actually on the CIM end of the stalk.
    This 'knob' might be to tell the CIM that a CC stalk is inserted.
    In an old posting on here, someone said that putting very small pieces of sticky paper on the end of the 'knob' helps to get the CC working.
    I tried this and it did work or a while, but the sticky paper bits came off.
    So I drilled the end of the new 'knob' with (i think) a 1.5mm drill and then used a 2 part epoxy resin to fill the hole, and more importantly leave a small bubble of glue at the end of the 'knob'.

    Again, if you have an old stalk, worth a go.
    Last edited by TonyP2020; 3rd June 2012 at 23:29.

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    Events Manager & Section Mod jon1.9cdti's Avatar
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    Quote Originally Posted by TonyP2020 View Post
    It is certainly possible that there is a problem in CIM, but I have never looked into/dismantled a CIM. Too scary.
    I hope someone with more experience of the problem can help more.
    Good luck.
    me neither im just going to try another one as i saw one get changed at plasmas last month and does not look too much trouble,

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    Regular Member TonyP2020's Avatar
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    Sorry, but I have edited my original post whilst you were typing your reply, I should have posted a new reply.

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