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Ive just had a dyno test on my Boxster S, 2000 model, 158 000km, RHD, daily driver. I have a 'dip' in the graph readings for both power and torque between 5 800 - 6 300 r/min - see attached. Any thoughts as to what this could be caused by? No misfires or any other symptoms. Scanner shows no fault codes. Im satisfied with the results, bar the 'dip', as the flywheel HP is usually about 12% more than is achieved at the wheels. Boxster HP graph.pdf
Regarding the repaired brake vacuum hose. I wasn't able to talk to the technician after all, but did take a look under the top engine cover. The vacuum line runs from the inlet manifold right through to the servo located under the front bonnet (trunk). I wasn't able to see where the repair was made - it could have been anywhere along this line. Perhaps the line wasnt properly connected to the inlet manifold? Its a sizable pipe and made of tough material - not easy to damage. Good hunting - if you think this could be your problem.
Hi All I was fairly sure that my erratic idling on my 2000 model Boxster S - never less than 1100 r/min and often shooting up intermittently to 2000 r/min - was caused by a dirty throttle body or MAF sensor. After cleaning the TB it made no difference and having caused an air leak on one of the rubber sleeves where it attaches to the plenum, I decided to give the job to my local specialist. The problem was resolved by repairing a hole in the brake vacuum hose, caused by the hose chaffing against the bodywork. I suppose that with 19 years under its belt and 147000 km I could expect something like this. The brakes work better too - less muscle required to stop the beast! Thought Id share...
Hi All I have a 2000 model Boxster S manual with 145000 km. Starting and idling when cold is perfect however when she warms up, especially in traffic, the idle speed is seldom less than 1100 and on occasions varies erratically between 800 - 2000. Am aiming to clean the MAF sensor and throttle body. Does my car have an ICV? Not sure what is meant by egas models? Any help much appreciated.
I found this 12mm high tensile steel bolt lying loose under the driver's seat (RHD) - can anyone identify it? Its 122mm long overall, has a 55 Torx head and some rubber tube over part of the thread. It looks like it should be holding something important together! Ive only owned the car a short time and not noticed any rattles or vibrations - except a timing chain rattle on start up which disappears within 2 sec. Its a 2000 model Boxster S with 138 000km.