Date: Tue, 4 May 1999 08:29:43 -0400 From: "Eric Law" <elawnopsamexxx.com> Subject: Re: Underboost problem
Tony, With 194K on it, you could definitely be looking at turbo failure. But another (cheaper!) possibility is a problem in the APC system. In my experience, when those systems get older, they're flakier than a box of oatmeal! One thing to look at is the contacts on the "brain", which is located just behind the left-front turn-signal light. Water works its way into the connector, and the contacts corrode, causing all sorts of intermittent problems. Another possiblilty is the pressure sensor, which lives under the dash on the driver's side. Only problem is they're a little hard to test by any method other than substitution. Good luck! Eric Law Tony Leggatt <Tonynopsamatt60.freeserve.co.uk> wrote in message news:7ghpfj$gge$1nopsam8.svr.pol.co.uk... > I have an 86 900 T16 > > Its getting on a bit (194 000 Miles) and is giving me an intermittent > problem on the maximum boost that can be obtained. > > OVer the winter the needle on the APC gauge has started to drop from > recording a maximum value on the border of the orange and red zones to only > swinging around about 3/4 of the orange zone. > > Now I have had the hooter valve replaced and can't find any obvious splits > etc. > > What has me puzzled is that I can get full (or nearly full) boost > occasionally. > > Before I take the thing in to get its plumbers nightmare system of tubing > etc checked out can anyone suggest what it might be and what the solution > should be. > > I've found that if I turn up with my Haynes and printouts from you helpful > people out there my mechanic:- > A: Treats me with a grudging amount of respect > B: Dignifies me with a full explanation of what took the time and shows me > the parts removed/replaced. > C: The bills have dropped as he has a bit more of a clue and knows that I > know how long or difficult things are going to be. > > So thanks to everyone who has helped me in the past or who may be able to > assist in this one. > > > > Cheers > > > > Tony > > >
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