Macster

Based on the info in this post I suspect the valve is the cause of the noise. My car makes its noise only after it is warm fully up to temp and only on mild to warm to hot days. Around 70F is the dividing line.

Below 70F the car/fluid doesn't get that hot and above 70F it does.

The hotter the temp the more frequently the noise appears. On real hot days driving through town making lots of stops, idling at lights, the noise can appear at every stop.

Get the car to a pro.

Get the car diagnosed by a pro.

Get the car fixed by a pro.

Pay the pro.

Go drive the darn car!

Sincerely,

Macster.

Chirofirst

gorgeous ride; love the wheels! Sorry I'm useless mechanically but you've made me consider white now when I get my tt!

ltc

Save your money and use it for a new belt tensioner pulley (bearing).

For a 996 Turbo in stock form, there is no need to exceed 93.5 octane. It isn't adding any additional power (in fact it is likely causing less power) and at 93.5 octane, there is little chance of the ECU be forced to retard the timing.

Kevinmacd

xxx

Kevinmacd

My point is why spend to have it diagnosed twice when a good Indy Porsche specialist will diagnose it and repair. Along with saving the 2x diagnosis, most good Porsche specialist will look things over beyond just the problem.( i.e. use the Porsche tool to run a scan on any codes).

adam_

Andrade? san Leandro?



Buy a flash from UMW, even his standard tune WILL benefit from the 50/50 fill.

Or fill it with all 100 and use the 100 tune.

But yes, get it fixed first.

A

PS Given the crappy CA gas, I think you DO see a slight benefit with higher octane even with a stock tune. I suspect that the stock tune is pulling timing, especially in hot temps, with 91. It would probably 'like' 94.... JMHO

"02996ttx50

i run a mix of 91 and 100 often, and the responsiveness and performance is noticeably improved. i can't imagine anyone not being able to tell the difference over plain old 91.

Lance 4c

Man I wish we had acess to this gas in my area. I have UMW stage two turbos and tune. In my 993tt with no tune, I used to buy race gas and mix it. I felt I could feel the difference over our 92.

"02996ttx50

it has become the bane of my existence since it's my nearest station carries it. i was paying 9 a gal and 150 a week for my special blend. but the car did wheelies, so was worth it. i've noticed gas prices really dropping lately, which isn't usual for summer. must be another sham election coming soon

mmporsche

Okay, I am anxious to learn of the diagnosis MissManual. Nice color choice by the way.

Kevinmacd

YIKES $6.29 per gallon for 93.5??? I pay $3.43 for 93.

Angelus

But to put it into perspective, I pay £1.35 for 95 ron and £1.40 for 98 ron. This gives approx' figures of ( please excuse my calculations, as I use the British standard "Man Maths". This is where you round up while budgeting car parts in your head and round down when telling your wife how much it cost.)

£1 = $1.51 and 1 gal = 3.78 ltr.

£1.40 X 3.78 = £5.29 per US gal

£5.29 = $7.97 per gal.

MissManual

PROBLEM SOLVED - the eerie high pitched noise is banished

I'd like to thank all of you and I did implement the knowledge you've shared. Sorry it took a while.

First I took my car to Bauer Porsche for basic diagnosis. They were a mere 8 min drive so by the time I got there, I had to rev the engine up to re-create the noise.

Once the noise was activated, the first thing I asked was to check the belt. Brian the technician showed me with a flashlight that the belt is good condition and intact. I could even see the white print on it so it was pretty new.

He immediately saw a "nipple" missing on the power steering reservoir. With a stethoscope we confirmed that the noise did originate from that area and that it was the part that needed replaced

Before taking her to a dealership for repair, I registered with PCA as per Macster's suggestion for member discounts. I chose Porsche of Fremont because they were mentioned on this post and I've read glowing reviews about them. Gunter and his service crew were very professional. They repaired my car within schedule. When asked if they found any other issues with my car, he said that it was KLEEEEEEN!

I was also able to use one of their loaners for a few days. I think it was either a 2011 or 2012 Cayenne S, I'm not sure. My husband who wasn't aware of my car issues thought I traded the Turbo for the Cayenne...and this bothered me but... he didn't seem to mind Anyway, the Cayenne is a nice SUV and will consider one once I pop out babies. Again, mad props to Gunter over at Porsche of Fremont. I will be taking my Turbo there for any maintenance or service needs even if they are not the closest.

And of course, mad props to you guys!

PCA referred me to the Diablo chapter and if you guys wanna hangout/B.S. I'm thinking of attending their member picnic event on Aug 26 in Livermore. I volunteered to bring unfiltered Dutch beer but the event is wholesome and alcohol free.

BTW, new part number for P/S res: 997-314-920-31 and pentosin chf 202

MissManual

More pics. I detailed her myself, by hand for the first time ever.

"02996ttx50

the 996 turbo is the only car i've ever felt required i become familiar with part numbers. congrats on your new PS reservoir and welcome to the club.

car is stunning, btw.