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My 318is has just had another engine put in it everything thing is fine apart from the idle, it sits at 1500rpm when its first started but as soon as you touch the throttle it hunts from 1300-1700ish :confused
I have disconnected the MAF and the revs drop to 600 (where it should be) but runs a bit ruff and loses a bit of power, i can hear the buzzing of the ICV but when i switch it off the icv still runs for a bit and then you can hear a click and it shuts off :confused
Does this sound like a MAF problem or an ICV problem ? if it is an icv problem can they be cleaned and how do you do it ?

cheers guys
gareth
 

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I would also check that you have the modified chain tensioner fitted and also check the chain guide as they can also cause ruff idle
 
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