Popular Post Woodhouse Posted September 8, 2019 Popular Post Share Posted September 8, 2019 (edited) Just in case anyone else experiences this, thought I'd post about my problem this week with my 981S. I didn't find much on Google but I believe it's a fairly common problem. The symptoms were a rough idle and low RPM running, accompanied by CEL and PSM Failure warnings. At higher RPM, it was ok. My Durametric diagnostic cable showed misfires on all Bank 2 cylinders (4/5/6) plus numerous other codes including P1381. Durametric identified this as misfire related but a knowledgable friend pointed out that this code is actually "valve lift control - one bank in wrong lift". There is one of these valves in the middle of each cylinder head and they control the switching between high and low settings for the amount of inlet valve iift or opening. I fitted the new part yesterday to bank 2 (just under £100 with TIPEC discount from my OPC). Access is through the wheel arch after removing the wheel and plastic liner at the front of the arch (as per spark plug replacement). Tools are an E8 Torx socket to remove two M5 screws and a long screwdriver to release the electrical connecter clip, plus male Torx bits and 10mm socket to remove the arch liner. Access is really tight and I struggled with big hands. There's also a risk of dropping the M5 screws down into the exhaust manifold underneath which has integral heat shielding so I stuffed it with paper towels to avoid having to try to retrieve a dropped screw in that blind space. I got the old valve out but had to get my son to get the new one back into position and connector on. The car is now running fine again. Edited September 8, 2019 by Woodhouse Typo 2 Link to comment Share on other sites More sharing options...
Buggyjam Posted September 8, 2019 Share Posted September 8, 2019 Top work! Link to comment Share on other sites More sharing options...
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