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Micra economics
I have owned Nissan Micras since 1997, trouble-free until I bought my present car in April 2007 (12k miles to date). Since then I have been rescued by the RAC and AA four times with the same fault - malfunctioning of the crankshaft position sensor. Is this currently a problem with Micras? The sensor has been replaced twice - most recently 15.04.09. On three of the four occasions I was able to come off a motorway without incident before the engine cut out completely. Does the fuel I use (Asda lead free usually) have any connection with this problem? I am not keen on buying another Micra so can you suggest a fue/CO2 efficient alternative? I have written to Nissan and am awaiting their reply.
Asked on 30 May 2009 by
Answered by
Honest John
From car by car breakdown at www.honestjohn.co.uk: "Sudden poor running or failure to start due to spate of crankshaft sensor
malfunctions. One reason given is that gloves worn by Engine Assembly workers shed Kevlar that sticks to the flywheels they were fitting. The magnetic signal for the crankshaft sensor then gets disrupted. Remedy, remove sensor and insert a gas burner jet flame whilst slowly rotating the crank. TSB issued August 2007 with a special tool to clean the flywheel to solve crankshaft sensor problem. Looks like a small grinding wheel." Your Nissan dealer simply has not fixed the problem properly.
malfunctions. One reason given is that gloves worn by Engine Assembly workers shed Kevlar that sticks to the flywheels they were fitting. The magnetic signal for the crankshaft sensor then gets disrupted. Remedy, remove sensor and insert a gas burner jet flame whilst slowly rotating the crank. TSB issued August 2007 with a special tool to clean the flywheel to solve crankshaft sensor problem. Looks like a small grinding wheel." Your Nissan dealer simply has not fixed the problem properly.
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