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Christiaan Poortman

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    The Netherlands
  • Porsche Club
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  • Present cars
    1997 986 Boxster 2.5

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  1. Thanks for the reply. Asked the shop which code I had: P0130 They checked the O2 sensors and told me they gave a proper signal. Also, as I understood, O2 sensors don't affect the engine when they're cold. Any explanation for this code?
  2. Thanks for your reply. I'll sum up some things I've done: TB cleaned ICV cleaned (and checked, actuating freely) AOS replaced MAF sensor replaced (first thought this was the problem) Spark plugs changed - old ones looked fine btw Vacuum test was performed after all this and no leaks are observed. Asked my specialist to give me the codes which were given. Kind regards, hope you can help me further.
  3. Thanks for the info. Will jack the car up tomorrow to clean up the engine number - it's a bit dirty right now. Local Porsche specialist said that the car gave codes which could be related to the O2 sensors, but these aren't activated on a cold engine (as far as I know). Also, they measured the sensors and said they were all okay. Anything else could be giving the lack of power and hunting idle on cold start?
  4. Thanks for the quick reply. Do you know where I can find the engine number? I am able to locate the VIN. Also, can someone confirm that early euro cars only had one camshaft sensor installed? Thanks in advance
  5. Hello, I'm new on this forum and stumbled upon a new problem (or old) with my 2.5l 986 Boxster from 1997. The problem occurs when the engine is started dead cold after sitting a few hours/overnight. Engine starts immediately but the RPMs start to surge / hunt between 1100 and 700 RPM. This continues for about 10 seconds after which the idle smoothes out to the normal cold idle RPM. The first pull away requires a tad more throttle then normal to prevent stalling. After this first pull, everything is almost normal and engine performance becomes better and better. When the engine is hot, the idle sits at 780 RPM with a minor fluctuation now and then (seems to be more than normal) I've been to two shops (official Porsche dealer and local Porsche specialist). Porsche dealer couldn't find anything and the specialist found the camshaft sensor on the left bank to be unplugged - but now comes the strange thing - the cabling is nowhere to be found!!!!!!? Took the car home to check myself but didn't find anything. No camshaft related codes to be found in the diagnosis and no CEL either. Attached one pic showing the sensor and it's missing plug Could someone help me out? - Is it possible for the engine not to throw a CEL when sensor is disconnected? - where is the sensor wire to be found?
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