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"Porsche covered one for me under goodwill at about 62k miles."
My "Stealer" where I bought My '09 S cab charged me $2,200.00"; did not even offer to mediate with PCNA. I will never use them again. Bummer!
Advice is if you get the "reduce power" and "stealer" is not too far, drive yourself in rather than have the car towed because you are then at their mercy.
Great cars ( my 2nd) lousy company and dealers.
I plan on replacing my High Pressure Fuel Pump this weekend... If anyone has any step by step advice or clear warnings, please share.
I've looked through all the forums and youtube to find a decent how-to without any luck. I'll attempt to film, note the procedure for sharing. I have a few other mini projects to do as well.
Okay, so it looks like I'll either have to have drain or remove the coolant (might be able to pinch the hose off).
Once that's done, the project looks rather straight forward. The space is a bit cramped.
For those that have called Porsche NA seeking and/or have received "Good Will" repairs, what number did you call and which specific Department did you ask to speak with.
I'm sure that others will find this information helpful and will wish to jot down somewhere... Well at least I do!
Anyone know what is normal pressure for these systems? I swear ever since mine was replaced by the dealer that the higher RPM’s don’t seem so peppy. Maybe it is in my head, but would like to check the numbers with my ODB tool.
Anyone know what is normal pressure for these systems? I swear ever since mine was replaced by the dealer that the higher RPM’s don’t seem so peppy. Maybe it is in my head, but would like to check the numbers with my ODB tool.
"REALLY ****ing high. Like, seriously. Do NOT disconnect or you will DIE."
You're looking for 1740psi/120bar. No, that is not a typo. (This is also one of the lower pressure HP DI systems. GM is 2200psi.)
You'll know when goes out. Engine light on, very rough engine, pdk shifts poorly. re-starts and dies. I thought pdk dead, total relief just hppe.
11 S with approx 45k about month out of cpo. Had dealer contact PNA and covered under goodwill. Porsche been good to me, both dealer and NA.
I knew it was high. At idle it was like 750 psi. My ODB reader has a readout of the fuel pressure. No issues with the car currently just it does not feel as peppy since it was replaced. Maybe it is just in my head.
At WOT you should see close to 1750psi, but 750psi at idle is probably within range. Without an FSM, I only know the pump specification is 1750 nominal. Unfortunately, I have to impart my professional advice here, which is: unless you are a trained, qualified mechanic with both experience and the appropriate special tools? Do not attempt mechanical troubleshooting or diagnosis of the HP fuel system. The forces involved should not be respected - they must be feared. So much as a pinhole in the rail can easily cause injury or death, to say nothing of setting the car on fire. (If you KNOW the HP pump is bad and replace it, it's no big deal. It's any time the system is pressurized that you are at extreme risk. I know what I'm doing and even I try very hard to never touch it pressurized.)
That said, if it's not feeling as peppy after HPFP replacement, I'd actually suggest checking the LP (low pressure) side. Which is no more dangerous to work on than any other 35psi fuel system. If you have an iffy or failing lift, this can cause problems in the HP side that won't necessarily throw codes. (The LP side in all makes/models is still very dumb.) One of the common symptoms of failing LP in DI systems is sluggish throttle or reduced power near peak demand. However, I'd have to refer you to Porsche's FSMs as to the exact procedure, as I haven't the slightest where they put the LP Schrader or even if there is one.
Root. Thank you so much for the reply. I will check the pressure when I get home tomorrow, but will only do it through my ODB reader. I am an engineer and with those pressure numbers I will leave it alone. Never heard about a low pressure issue that caused this so I will research that as I have all the tools and gauges to test that. Love working on cars, but I know my limits.
04-04-2018, 03:06 PM
