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So I'm in the midst of switching out my pump, and the old pump has something like a washer but it's cracked. What part is that and could it be ordered separately or is it part of the clutch.
Based on my VIN# the part numbers for HPFP for my 2009 CTTS is 948-110-315-5X, not listed in any parts diagram that I could find.
I'm also a member on dorkiphus and followed the DIY on there. This is the part in question. This part seems warped some or is that how it is. Old pump.
Running like crap, durametric HPFP error codes shown, 100k miles, all the common HPFP symptoms. Maybe the pump is fine and it's just the dime size stopper that causing all the issues...who knows.
It's a white plastic stopper that goes inside the camshaft and the metal piece it's clutch that connects the high pressure fuel pump to the camshaft.
Yes you can order the plastic piece separately from Porsche Dealers. It's available in stock in most dealers.
Running like crap, durametric HPFP error codes shown, 100k miles, all the common HPFP symptoms. Maybe the pump is fine and it's just the dime size stopper that causing all the issues...who knows.
That's not high mileage for HPFP. Turbo/Turbo S have different pump than, V6,S Cayenne. TT/TTS HPFP are far more better than V6/S HPFP. Also they have more pistons. Mine has 200.000km and not a single problem with the pump. Did some camshaft adjustments few days ago in Porsche and some other things changed, but the HPFP is in perfect condition. Now, that of course depends on a lot of factors, which I know you do know that. You should order new accessories parts for HPFP before installing that new pump in your car. I was talking about HPFP when I was at the dealer, and chef of staff told me that HPFP for TT/TTS is made much better than for V6/S and it is least likely to cause any trouble till 280.000km-300.000km, but even then if car was properly maintained could last at least till 350.000-380.000km. I am going to sell my car this autumn or early next year and buy something else, so I am pretty sure I will not have problems with HPFP.
It's a white plastic stopper that goes inside the camshaft and the metal piece it's clutch that connects the high pressure fuel pump to the camshaft.
Yes you can order the plastic piece separately from Porsche Dealers. It's available in stock in most dealers.
That's not high mileage for HPFP. Turbo/Turbo S have different pump than, V6,S Cayenne. TT/TTS HPFP are far more better than V6/S HPFP. Also they have more pistons. Mine has 200.000km and not a single problem with the pump. Did some camshaft adjustments few days ago in Porsche and some other things changed, but the HPFP is in perfect condition. Now, that of course depends on a lot of factors, which I know you do know that. You should order new accessories parts for HPFP before installing that new pump in your car. I was talking about HPFP when I was at the dealer, and chef of staff told me that HPFP for TT/TTS is made much better than for V6/S and it is least likely to cause any trouble till 280.000km-300.000km, but even then if car was properly maintained could last at least till 350.000-380.000km. I am going to sell my car this autumn or early next year and buy something else, so I am pretty sure I will not have problems with HPFP.
Yes, I'll be calling the dealer this morning as soon as they're opened.
The dealer I bought the pump from is closed today so I called the local dealer who sent me the above photo. The tech at dealer was saying I needed accessories which match 957S. Parts guy was helpful but couldn't provide the part as no drawing, and could only go by what the tech was advising. So I'll just have to wait until next week.
So no one on here has changed a HPFP on a CTTS before?
The dealer I bought the pump from is closed today so I called the local dealer who sent me the above photo. The tech at dealer was saying I needed accessories which match 957S. Parts guy was helpful but couldn't provide the part as no drawing, and could only go by what the tech was advising. So I'll just have to wait until next week.
So no one on here has changed a HPFP on a CTTS before?
Ok. Goodluck.
What cayenne do you have??
Do you have WhatsApp. It's much easier for me to send pictures.
So to update this thread, the black cracked washer looking thing that was pictured and the end of the pump, well that's the remnants of the stopper. Now they come in white so that threw me for a minute.
Finally got the stopper in after waiting for two weeks. Installed the new pump today without any issues. However, she's running rough, starting right up though.
So for those in the know, what are the next steps?
Check and see what the fuel adaptation numbers are and what the fuel set point is. Should be around .98 and 4K . So many back and Forths about if the car will adjust to a new pump on its on. Mine didn’t but my issue was a little different than your. Usually a p1025 code will show up if it’s a fuel adaptation issue. Also not sure if it matters or not but when the stopper breaks half is left insides the cam shaft. I had to dig mine out with a tiny pick. The stopper isn’t required anyway. Just a helpful line up tool for installation.
Any update on this post? Is the car still running rough or did it eventually adapt itself and get better? Also curious if you purchased an OEM, rebuilt or EBay HPFP. I’m having the same symptoms and code and getting to pull mine apart next week but need to order a pump soon.
04-19-2019, 09:07 PM
HPFP CTTS ? Installed now, but running rough.
