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Hi to all,recently i`ve noticed my engine idle fluctuates after coming to a standstill ie coming to traffic lights or a roundabout or junction.Once it bounces around for a while it settles down then its fine untill i reach the next standstill then it happens again.
I`ve checked the sensor it seems ok.Any ideas its doing my head in.
 

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If you checked the MAF sensor and it's OK, check also the Lambda sensor. A friend of mine had a worse problem not only with rough idle, but with lack of acceleration, and turned to be a bad lambda sensor (he has an Opel Omega, but all cars have lambda sensors).
 

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You also may want to inspect the air filter box and the plumbing from the box right into the intake. I just replaced my air filter and had very close to the same condition you describe. Turns out that the plastic pipe right at the intake had come a little loose. Since not all of the air charge was going past the MAFS, the fuel management system did not know the proper ratio.
Eh? For what it's worth.
 
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