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Date: Fri, 17 May 2002 19:42:36 +0100
From: Johannes H Andersen <johsnopsamanytime.co.uk>
Subject: Re: ECU replacement


andrewunix wrote: > > Fri, 17 May 2002 08:27:33 +0100, andrew.hookinsnopsamam suggested: > : Hi, > : > : Are you sure its the ECU at fault. Other causes are > : a vacuum / pressure leak due to bad vacuum hoses > : or connections or a sticky AIC valve. The AIC valve > : can be removed and cleaned up with carb. cleaner > : or something similar. > > All of these things have been addressed. The only potential culprit I've > got left is the ECU. > But you don't really know if it is the ECU. I once had the exact same symptoms on my 9000 CSE, and it was a vacuum leak. The leak was on under side of a small diameter pipe from the manifold, apparently carrying a vacuum signal to a sensor. The pipe was spilt at the end, but the split was hidden from view. I only found it by carefully listening for noises. I cut off an inch of the pipe and refittet. No more fluctuating idle. Johannes http://users.surfanytime.co.uk/johs

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