blee49

Udate on my latest saga on the yellow coolant fault code on my 2013 991 with 39K miles car... I took it to a Porsche dealership called Napleton Autowerks in Springfield Missouri. They diagnosed it having two bad changeover valves (sound symposer and air cleaner box flap). It cost $900.00 for parts and labor to replace. They reset the warning light and I drove it home. I drove the car for a couple of days but did not push the "sport" button. A few days later, I went out for a spirited ride and experimented using the sport button and the same warning light came on again. I could not believe it. I called the dealer back and explained the situation. Of course he told me to bring it back in and they would check it out. I brought it back to the dealer and they checked the two valves that they replaced and said they were fine. They did a vacuum test on the remaining valves and couldn't find anything wrong with them. They said it could be an intermittent failure of the remaining valves. They suggested replacing all the remaining changeover valves at a cost of $1354.00 parts and labor. I live 100 miles away so I had to leave the car for a whole week while they ordered the parts. They did give me a loaner car to use. They said they would call me when it was ready. While I was waiting to get the car back I called PCNA in Georgia and pleaded my case to them. They started a case file on my complaint. (I have yet to hear from them). Seven days later when I picked it up I spoke with the tech at length about the problem and he assured me it had been corrected. He also stated he had checked the vacuum pump and anything related to the vacuum that would trigger the warning light. They said they drove the car 35 miles to test it but I'm not sure if they pressed the sport button. I probably should have asked. I drove the car 100 miles home but I did not activate the sport button. Two days later I went out for a ride. With the sport button ON, I did a rolling 0 to 60 which red lined it. I continued driving it aggressively through the curves. Within five minutes I looked down at the gauge pod and the damn warning light came on AGAIN. I was totally livid. While I was driving home I called the Porsche dealer and gave him the what for. The service man was stymied and started giving me excuses. I told him this is completely unacceptable. He said he would talk to the tech, call Porsche and do whatever he could. I haven't heard anything back yet. I decided to go up the ladder and contacted the General Manager of the dealer franchise. Explained everything that I've been going through with this car and he said he would look into my case and do whatever he could do, including calling Porsche corporate. This has been a very frustrating introduction to the 991. Does anyone have ANY suggestions??? Thank you! Brian

Homeles

I had 3 of them replaced a few years ago. All different ones at 2 different dealerships. The service manager said he would replace all of them, but I wasn’t giving him the time I needed. I was out of town and going on a drive. 100 miles later, another one failed. I called PCNA and was directed back to the original dealer. They gave me a loaner and replaced all of them after I demanded to PCNA that this had to be done. Two weeks later I got this check from PCNA, quite a surprise!

Carl Over

Sorry to hear about your problem. There is a YT vid that discusses Porsche COV issues. The guy said that the problems often are caused by the PSE COV failing. It sounded like the recommendation was to change that first and reassess. Do you have your service ticket? What was the part number and the qty? Seems like some cars have 7 and some have 8. Clearly they haven’t replaced the proper part if you continue to have this problem. Maybe a defect in a vacuum line that has not been replaced? Did they replace any of the vacuum lines between the COV? I would demand that they keep the car until the problem is resolved. You have paid $2000 for a repair that has not worked.

Someone on this forum said that the Foxwell 530 can test COVs. I don’t think he had tested his yet though.

Fullyield

Yes. The Foxwell 530 and 510 Elite can both test the COV’s.

blee49

What year car is your 991 and what year did you have these problems?

zoomzoommo

I live in Springfield, but take my cars (for non-warranty services) to PHP Specialists in Joplin. Superb Euro shop, excellent mechanics. Matt Pietro is the owner. Unsure if this is a further drive for you, but perhaps a better solution for future service needs.