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Date: Tue, 28 Apr 1998 22:17:58 +0100
From: "Tim Ricketts ,Wales, UK ." <>
Subject: Re: Help! My 86 900 Turbo is Ticking!!!!

Tim Webb wrote: > > Hi Folks this is my first visit and I'm already desperate!!! > > I own a 1986 900 Turbo which has been an outstanding performer until > recently. Now the Turbo only seems to kick in, to about half way up the > gague, and there is a distinct ticking sound coming from a small round > object at the front of the engine which appears to have three pipes > connected to it along with an electrical connection. This is ticking all > the time until the brake pedal is depressed. This stops the ticking but as > soon as the pedal is released its back. > > My wonderful Turbo is now distinctly miserable and I am being taken out by > Ford Mondeos and even Volvos', My garage has reported that they have no > idea what the problem might be and as usual are suggesting we replace > everything from the drivers seat to the towing hook in an attempt to clear > it. > > Please help, money is still tight around these parts > > Thanks > > Tim > > Hi,the thing with 3 pipes is the apc valve which controls turbo boost pressure according to requirements.This valve has very small orifices which can become blocked,so check this out.Also,do your brake lights operate normally ? check this in conjuction with all other rear light functions,ie indicators,reversing,side etc.Check these items and let me know,mean time i'll check the book and post the correct way to check the apc valve. Tim R.

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