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slknv
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So, my '99 C2 ended up with a sudden misfire on cyl 6 and super rough idle. Relevant codes are p0341 (camshaft positioning sensor 1) p1123 (Oxygen sensing lean cyl 1-3) p1530 (camshaft adjustment bank 1) variocam failure? p1340 (timing chain bank 1) out of sync p0030 (Misfire) p0306 (Misfire cyl 6) So, I'm going to work my way from easiest fix to most expensive.... I figure 1) Replace coilpack cyl 6 - have ordered 2 2) Drop the oil and filter and check for any debris. Time for a change anyway 3) Investigate variocam solenoid bank 1 (inspect/change seal first is cheap & easy, then from there...?) 4) Investigate cam positioning sensor bank 1- is this the hall sensor? Apaprently it's tricky to access, on the left side, front of engine near the firewall? This is a daily driven Australian model 996.1 c2 tip cab with 258,000km. Already fixed a whole lot of other problems in the last few years. I can deal with a bad coilpack, variocam seal or solenoid, tensioner actuator, guide pads which is what I'm suspecting given the codes thrown out. I have a feeling it's not an IMS grenade, but if it is, the car will be sold for salvage and the next project starts! Any tips would be appreciated. I'm pretty handy with tools, but I don't think I'd tackle getting the engine out.
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OK maybe panicked too early 😁 yes I grabbed the old filter from the bin and checked that part fits. Removed new filter, cleaned up everything and stuck it back together. Thanks Loren for the fast reply.
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So was just finishing up an oil change in my 2004 cayenne turbo, (have done this 4-5 times before with no issues) and was putting the used oil into bottles for recycling when I found this important looking thing at the bottom of the pan! It didn't fall out of the main oil sump (too big for that) but it could've come out when removing the oil filter. Possibly up in the filter housing somewhere? That said, I've had a good look through diagrams online (eg http://www.autoatlanta.com/porsche-parts/hardparts.php?dir=9PA-03-06§ion=104-10) and I can't find a part that looks like that! Any help or pointers greatly appreciated, as I won't be driving this until I get this part back in where it should go!
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Thanks everyone - problem solved. Got the intake, drive belt and alternator out in 15 minutes, plugged in the loose vacuum line behind the intake, reassembled everything and she's good to go now! Yet to take her for a long drive to see if my charging voltage is stable, and whether my hot start issue is solved, but fingers crossed!
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Thanks @DBJoe996 based on that diagram I think it's C - no wonder I couldn't see where it goes, being hidden on the inside of that intake pipe! Question - do you think I can plug it back in by removing the intake/throttle body, or am I going to have to get the alternator out again?
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Hi everyone, Yesterday started the process to replace my alternator/starter cable (as well as the alternator regulator and drive belt) on my 1999 911 c2 cab. Apart from a plastic coolant connector splitting, everything went pretty well - until I realised there was a random loose vacuum line hanging around behind the alternator - and I can't for the life of me figure out where it's meant to plug into! Have attached picture to this post. Stupidly I went ahead to finish up the job, refitting the alternator, drive belt and airbox. Car started up, but with a very rough idle (which I figured was from having the battery disconnected for 2 days) but after it warmed up, there's was a lot of backfiring from the left side bank/left exhaust and running very rich, which I figure is due to that vacuum line not connected properly. I figure it'd take me maybe 30 minutes to get to that vacuum line again which is fine, I'd just like to know where it goes! Thanks everyone for the help!
