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217,458 miles on my 05 S original coilos
I wouldn't worry too much about the octane. Mine runs fine on 87.
MY 2006 CS just started doing this and giving the same codes. Had to floor throttle everytime I filled up fuel. I was thinking it was EVAP purge valve. I put a clamp on the vacuum line between evap valve and throttlebody then went and filled up. Problem solved. Have valve on order, around $130 and easy to replace. Note doing this will also cause evap codes but will start every time and run well. The other thing I noticed was horrible fuel economy.
Just drove the S for the first time after completing my project. Shifts much nicer with RevMax valve body and Mobil 1 fluid. Also feeling much better with the tubes replaced. I am very dissatified with the amount of junk plastic parts used. I broke the plastic line going from throttle body to valve cover. Porsche wanted $157, BS!!! I made one for less than $8 from parts at the local parts store. Don't buy any of the special tools listed above, totally unneaded. The first few miles was a little unnerving until the computer relearned itself. I also changed the waterpump to an aftermarket unit with metal blades. Had a slight fitting issue, the blades rubbed the housing a little at first. A quick buzz with the dremel tool fixed that in seconds. I am really liking my new Durametric tool, wish had bought a long time ago. One thing I am looking for is a list of what values should be when reading with Durametric and what things can be read and what can not as some of the things I clicked on showed no value?
Thanks everyone who responded. I have been under the truck many times and the tranny doesn't appear too difficult to remove. I am concerned on how to access the torque converter bolts. Does anyone have any pictures. At the same time I will have intake manifold off so getting to the top bellhousing bolts shouldn't be too bad. I am also going to have the starter rebuilt while there. Anyone have any ideas on other things to do while I am there.
My 2005 S is very sick. For a few months it has been dripping tranny fluid out of the bellhousing and has been shifting very pourly. This week it decided to prove to me that it still has the original plastic coolant pipes. This is my work truck and now has 173000 miles. I plan on taking a week off of work and fixing everything myself. I also plan on putting in a new waterpump just to be sure. I am somewhat worried about removing the transmission. Has anyone done this at home without a hoist. Does anyone have a procedure or pics. 20 years ago I was an ASE Master so I do know what I'm doing, just not on a Cayenne. Are there any special tools needed? Where can I access the torque converter bolts. I will purcase new valve body from revmax, will I need to take to dealer to have it flashed or will my Durametric take care of it. Where is the best place to get the coolant tees, any upgrades? Looking at getting coolant pipe kit from Pelican, anything else needed there? Thank you for any help provided.
I have been running 1500 miles now on one fuel pump. I was on a long trip and this forum saved me a huge out of town tow and repair. The CS is actually idling better.