Join Date: Feb 2008
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It is iron filings stuck to the tip of
sensor that is causing the problems. Signal quality is reduced which may lead to poor cold starting due to slower cranking speed. I clean them with my fingers or a cloth if one is close at hand. Suppose an old tooth brush would be perfect.
Currently in tolsen's garage:
Trekka 1.9 DCI, Smart Cabrio Cdi (65 - 85 MPG) & Ford Transit 2.2 Duratorq TDCi