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Posted on Apr 11, 2009
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Exhaust brake has stopped working

Exhaust brake has cut out for a short while and then started working again ,but has now stopped again .

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  • 2 more comments 
  • cazza_b Apr 11, 2009

    It is actually an exhaust brake on an isuzu npr 300 turbo diesel, but there was no listing on Fixya. It is factory installed and is a vacuum operated butterfly on the exhaust. I have so far checked that the butterfly is not seized and the magnetic switch that operates the vacuum to the butterfly is working. There are a couple of other switches on the clutch and accelerator pedals which I have tested to be ok but I think the problem is before these switches.

  • Anonymous May 11, 2010

    Huh?????????

  • Marvin
    Marvin May 11, 2010

    not a usa model then

  • Marvin
    Marvin May 11, 2010

    what is the question? is this a diesel? is this a "Jake Brake", it is factory installed?i

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Simon

Simon

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  • Posted on Apr 20, 2009
Simon
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Joined: Apr 20, 2009
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Its part of the quick warm up gear worked off a switch on the dash its on all the EU models not a jake brake like a truck. Wont come on once the engine is over 55 c . We dont touch em in the UK as they are prone to stick shut !

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1990 Mack dump truck 6 cylinder jake brake works driving but shuts down moter when clutch is pushed in.So l shut switch off till l start going again,turn it on,works fine till l need to stop again?

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