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Old 29-08-2015, 09:24 PM
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fraser9764
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You really need some form of pressure/vacuum source to test the sensor calibration. A mitivac is ideal
Like this
http://www.ebay.co.uk/itm/Mityvac-MV...item48787e1923
Handy to have in the garage to be honest. Good for bleeding brakes etc. too.