sandwedge

This came on tonight just as I was approaching my house. Seemed like it started to run a little rough but nothing dramatic. Oil pressure and water temp normal. No smoke and no fluids on the garage floor after parking it. Left it alone for 15 minutes and then went back out and cranked it. Some hesitation starting but it did start. Idle a little rough for a few seconds but then went to normal. Then the light came on again so I shut it down. Flatbed to the dealer tomorrow (second time in two months).

Nothing in the handbook about this light except "consult your dealer". Irony here is that this is turning into the least reliable 997 of the three I've owned with the much maligned .1 -06 the most reliable. Anyone with a thought of what might be going on? Have Fidelity Platinum coverage.

bhvrdr

Scan the car and it will point in the right direction. Id guess fuel pump or injectors. If its not yet an all out failure you can get soft limp like you got

mike

docdrs

ATSR

+1

That would be my guess too. If it is, ask your dealer if Porsche will pay for the replacement even if your car is out of factory warranty. They paid for mine after my CPO warranty had expired.

ocsm3

+1

That is exactly what happened to me. High pressure fuel pump. Good luck.

Bruce In Philly

Total guess: an ignition coil. Although, they tend to run fine after a cool down, then misfire when heated up. (Probably the HPFP). When I had an ignition coil go on my 2000 Boxster S, the car shook quite a bit.... cooled down and ran fine until hot, then the shakes again.

Peace
Bruce in Philly

millertimefl

If it is the HPFP replace the water pump, just guts not the whole thing with housing, at the same time if you haven't already. They are right next to each other and they have to pull coolant hoses to replace HPFP so labor is very little extra.
I had my pump replaced and 3 days later noticed coolant on garage floor. Brought it back and they said that since they removed the serp belt the lack of pulley pressure helped/caused the old pump seal to leak. Had to go through full labor and coolent flush again to replace water pump.

Fahrer

Long cranking when starting up and reduced engine power warning are classic symptoms of a failing HPFP. This was a chronic problem with my ( thankfully long gone) 2008 BMW 535.

sandwedge

Right in line with what my service advisor said although they haven't gotten to my car yet but he said that's almost always the case with that warning light and the symptoms I described. Have to backtrack on the "no fluid on the garage floor". As I rolled it out to the flatbed I did notice a small puddle right underneath the engine. Wasn't gasoline but had an oily feel to it. Completely clear though so I doubt it was engine oil. Wonder if the high pressure fuel pump is internally lubricated and that's what leaked out when it broke. Guessing it was only a couple of tablespoons worth.

docdrs

sandwedge

That corresponds pretty closely with the location of the small puddle. Whatever the cause, that puddle will cost me no more than $250 with current warranty and current on all maintance.

James William

When you change high pressure fuel pump did it stop giving you the warning sign because I get the warning sign while I am at top speed going over 80miles and once the light comes on the car won’t go more than 50miles an hour

Hindsight2010

1000% HPFP. All the symptoms, including the small amount of fluid from the failed pump.

https://rennlist.com/forums/997-foru...fuel-pump.html

sandwedge

3 year old thread brought back to life but I noticed that I never posted the result of the diagnosis once the car was in the the hands of the dealership. As many suggested it was the HPFP. Was replaced as a recall item so I didn't even have to involve Fidelity.

There's been opposing and conflicting stories on failed HPFP's on 997.2's over the years. As I said, some like myself got it replaced at no cost as a Porsche recall item. Others say they had to pay for the replacement or use whatever warranty they had. I don't think these discrepancies were ever settled or explained, at least not that I've seen.

Hindsight2010

Oh wow, didn't even notice it was from 2018 haha.

To answer your question James, replacing the pump (assuming that's the cause of the issue) fixes the issue of not being able to drive over 50mph as well as removes the warning sign, yes. Also fixes slow starts and hesitation/bucking.