Hey there. I haven’t posted in a while and unfortunately I have a myriad of issues to deal with. It was time for inspection and my brake light just came on, so to be proactive I did the pads, cleared what had on previous inspection visits been a few intermittent misfire codes, drove the car for about 30 minutes, no CEL while driving. Headed out this AM to get the PA State Inspection/Emissions done and CEL was on. Pulled the codes and saw some new and disturbing ones. Cleared them anyway and went to me appointment fully expecting to fail and I wasn’t disappointed (I did the like the Akebono Ceramic pads I just installed!)
After spending the past 4 hours looking (and unfortunately not finding a whole lot of specifics to my codes) I have decided that I should proceed with my planned carbon cleaning, replace the left motor mount N164 - Open Circuit (I have the eBahn Bentley stuff - looks straightforward), do the coils and the either send the injectors out or replace them and most likely get the JHM spacer.
The guidance I am looking for is what to focus on for these errors:
Bank 1 both (A&B) camshaft position actuators (P2088 & )2090) short to ground 9.779v happened simultaneously at 140 RPM’s (on start I am assuming)
Bank 2 both (A&B) camshaft position actuators (P2092 & P2094) short to ground 9.652v I am guessing simultaneously (almost) at 142 RPM’s 9.652v (guessing since there is no date/time stamp
Instake Manifold Flap 1 Bank 1 P2009 - short to ground Same exact numbers as the Bank 1 actuators above
Intake Manifold Tuning Valve Control Circuit Bank 1 P0661 short to ground at 953 RPM’s but 23 seconds later
So, I can’t swap Bank 1 to Bank 2 for the cam actuators since both are throwing errors, from what I can tell short to grounds COULD be bad electronics. I have not read any values or performed any tests with VCDS (I need to research what those steps would even be for the above errors). I could swap Bank 1 to Bank 2 for the Intake Flap & Tuning valve (once I locate them - hah!) to see what happens there.
In general the engine isn’t running horrible, but the MPG has dropped significantly at this point. I started noticing issues around 150K miles (197K are on the clock now) but with a 997 Turbo engine drop and multiple issues to address and finally fixing the ABS sensor (actually a wiring issue) on the V10 early last summer, I just ran out of steam to do the carbon job by the time winter rolled around. I think I have avoided the carbon buildup so long compared to others due to the fact that I drive all of my cars the way they are meant to be driven rather than pussy footing around and being worried about gas mileage.
I will update the post with some pictures and information as I tackle each of these things so you guys will know what I found.
So thanks for taking the time to read this, and if any of you have any suggestions or BTDT’s for what I am about to embark on, I would be very appreciative of the advice.
Take car and stay safe,