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Thread: ACE question

  1. 31st July 2011, 03:43 PM #1
    wopac5
    wopac5 is offline Master
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    ACE question

    Hi Guys...I have never noticed before, and there are no lights or leaks, however, when at no speed...sitting in the carport engine running, every 30 seconds or so, there is a "sigh".
    First thought was the air con kicking in and out, but eventually traced to the valve block for the ACE.
    Now, I understand that at no speed the DCVs to the front and rear are closed and the fluid is on a pump around from the resivoir to the valve body, through the PCV (pressure control valve) and back to the resivoir.
    But is the PCV held open in this mode, or spring loaded to allow pressue to relieve only at the set pressure?
    The real question being, of course, is this normal?

    Thanks
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  2. 31st July 2011, 06:37 PM #2
    lewy
    lewy is offline Wizard Silver Subscriber
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    funny you mention that,heard the same thing today whilst bending over the valve block listening to the engine. Sound like a relief valve or something.
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  3. 31st July 2011, 08:18 PM #3
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    clubagreenie
    clubagreenie is offline TopicToaster
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    Mine make a regular noise every 27seconds. Only thing it can be is ACE pressure relief. I got hold of a shorter belt and bypassed ACE, P/Steer & A/C (independently) and the only time it stopped was without ACE.
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  4. 31st July 2011, 08:57 PM #4
    Tombie Guest
    Perfectly normal
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  5. 31st July 2011, 09:26 PM #5
    wopac5
    wopac5 is offline Master
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    Thanks to all..."Perfectly normal" is good.
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