Date: Sat, 05 Sep 1998 10:31:36 +0100 From: Keith Warnell <keith.warnellnopsamin.net> Subject: Re: Turbo Boost problems
I've seen two resons for this: 1. The water temperature is important, when the engine is cold it doesnt allow full boost in scase of damage to not warmed up parts. WHere'e th etemperature guage sitting? should be around 1/2 way up. If not then its the thermostat, if temp is OK then its the sensor (dont know where that is) 2. Boost leve is controlled by many things, one is a knock sensor. boost keeps piling on until the engine knocks (pre-detonates) an acoustic sensor on the block between injectors 2 and 3 senses this and backs of the boost until it doesnt knock any more, then re applies boost etc. Could be sensor fault or.... as simple as a noisy water pump affecting the very sensitive sensor. Hope its not the APC box...Cheers... Keith Paul Aspinall wrote: > > I have an 89 9000 Carlsson. I have had problems with Turbo boost for a few > months now. The car seems to imtermittently reduce itself to basic boost for > no reason (ie. the boost guage moves half-way into the yellow). > Occassionally I do get full boost (all the way into the yellow), but it is > quite rare. > > I have changed plugs, air filter, cleaned injectors, tried new boost > solenoid - but no luck. > > Has anyone had this problem, or can anyone help??? > > Thanks
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