Date: Thu, 04 May 2000 09:39:59 +0200 From: RCS <e9225126nopsam1.tuwien.ac.at> Subject: Re: 900LPT Turbo problem?
A mentioned before the battery has no effect on the LPT turbo. The only thing I can imagine is that you loosened a air intake hose when you worked on the battery. The LPT has no APC and no charge air cooler but the turbine is also very close to the battery (the only very stupid constrution point in the old 900 - battery heat shield). Have a close look at the air intake pipes and the turbo pipes (but I canīt imagine that itīs the turbo pipe), search for holes there, happens pretty often cause the engine rests are very weak and the engine moves a lot, so the pipes suffer from it. (e.g I had a hole in the air intake pipe, the aluminium hose right behind the front radiator cause a screw worked through it - not easy to find (900 turbo conv.)) Greetings, RCS Martin Cockett: > I have a late '91 900 LPT Aero and have recently noticed a lack of oomph - i.e. > no real turbo surge beween 2500 and 3500 rpm. The car otherwise runs well. > Some background: About 3 weeks ago I accidentally flattened the battery by > leaving the interior light on for a week! It was completely dead but having > recharged it, it has been fine since. I have also been away for the last 2 > weeks so the car has been standing unused for that period - battery > incidentally still healthy. I have also noticed some black sooty deposit on > the pipes that connect the turbo to the air intake - the deposit appears only > to be on the side of the pipes nearest the radiator and is concentrated near > the rubber joints that connect to the turbo outlet side. So to my question: > > Is it possible that by flattening and/or temporarily disconnecting the battery > the engine management needs to be reset to ensure correct operation of the > turbo? I am not sure whether the light pressure turbo models have the APC > control or not. > > Is the sooty deposit a sign of something amiss with the turbo? Burnt oil or > something? The engine bay is otherwise clean with no signs of any major oil > leaks. The exhaust emission is clean - no black smoke and the rear tailpipe > spotless. The car has only done 69000 miles. > > Any advice appreciated > Thanks > Martin
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