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Thread: EAS Valve Block Rebuild

  1. 5th February 2012, 04:44 PM #21
    PeterAllen
    PeterAllen is offline Master Supporter
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    Thanks Dave but I don't think it is the switch given that the fault will occur even when the car is in pump up mode
    Anyway we will soon get to the bottom of it as soon as the good drive unit arrives
    The reason I am convinced of the drive unit is because the car does strang things. On some occasions when u lock the car you can hear the air being let out of the exhaust on the valve block. other times it stays up and nothing happens so I am hoping the driver unit is the answer
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  2. 5th February 2012, 05:20 PM #22
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    PaulP38a
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    A minor clarification - the brass fitting is the pressure relief valve, and the green unit is the pressure sender unit. Either of these can contribute to the pressure constatly high fault message.
    Cheers, Paul.
    My toys, projects and write-ups at PaulP38a.com
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  3. 8th February 2012, 07:46 AM #23
    PeterAllen
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    Is there any way of testing these units other than buy and try.
    I have seen the storey Wilson test for the pressure sensor switch which is fine if you can actually get the system up to over 140psi but nothing on the relief valve. Any ideas ?
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  4. 8th February 2012, 10:44 AM #24
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    PaulP38a
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    The compressor should be able to get over 140psi after running for a few minutes. Manually operating the compressor through EAS Unlock or jumper wires should do it. I have not checked what the relief valve is set at though.
    My toys, projects and write-ups at PaulP38a.com
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  5. 8th February 2012, 07:45 PM #25
    PeterAllen
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    Tested the pressure switch and the circuit was closed at all tests before and after depressurising.
    This is suppose to mean that the sensor is telling the computer that the system is at full pressure and to stop the compressor, however, this does not seem to be the case, as on most occasions even in fault mode the compressor is running. Admittedly it wasnt running tonight while testing but normally when I start the car the compressor will be activated,
    Can anything in the valve block rebuild have upset this switch.
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