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I just bought a 2008 Porsche Cayenne Turbo. It has 105,000

miles on it and my...
I just bought a 2008 Porsche Cayenne Turbo. It has 105,000 miles on it and my only real complaint at this point is that it has a very rough idle, which sits almost below 600 RPM, and that for being a 500 hp twin turbo V8 I can hardly hear the engine sound at all. Instead I hear what sounds like just a bunch of low-quality whiny belt sounds, like something from a cheap Ford Crown Victoria taxi cab. What could be causing all that whining noise that's drowning out the sound of the actual V-8? Where to look first? And should I take it to a Porsche dealership and hope I don't get reamed with high cost maintenance repairs or is it OK at this point to take it to a relatively good reputation local car repair shop and have them troubleshoot it.
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Answered in 3 minutes by:
9/17/2017
eauto
eauto, the car guy
Category: Porsche
Satisfied Customers: 16,555
Experience: 15 plus years of automotive experience
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Hi . Thank you for asking your question on JustAnswer.

any warning lights on? is the noise coming from the belts/ pulleys? did you buy it from a dealer? warranty?

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Customer reply replied 2 months ago
A check engine light came on not long after I drove it off the used car dealer lot. I did not notice the light during the test drive. I noticed on the fuel cap it said something about you will see a check engine light if it is not sealed correctly so perhaps has a bad gasket but the Carfax on the Virginia state inspection we're all completely in the green. The noise certainly sounds like it's coming from belts and pulleys. I literally just bought it then drove it seven hours straight to another state. I bought it from a somewhat shady looking used car dealership but the salesman was super Nice and threw in a lot of extras because I came from out of state to purchase it. Included in the cost was a basic three month unlimited mileage warranty from diamond warranty company, which is only for Engine and power train. Otherwise I bought it as is. I have a 2007 Mustang GT which has just the most glorious sounding V-8 engine. So that is one reason I am so shocked that this 500 hp twin turbo beast sounds like some old used taxicab except for when I really push on the gas and get the RPMs up.

if there is a noise from the pulley area i would have it checked out to find out whats going on..if the engine light is on It needs to be scanned with a scan tool to determine fault codes

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Customer reply replied 2 months ago
Can I take it to a local repair shop like Goodyear, or is it totally necessary to take it into a Porsche dealership? I don't have a Porsche dealership near me, but I have several reputable auto repair shops. Thanks.

i would not suggest goodyear maybe a local independent german specialist someone who work on vw audis benzs etc..mot communities have a place like this

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Customer reply replied 2 months ago
OK thank you. I just drove the vehicle all the way from Northfolk Virginia to Orlando Florida without any problems since I change the tires but I still have a check engine light and there are still some other oddities for lack of a better word. I think I will take it to the Porsche dealership in Orlando and have them officially take a look. I suppose I shouldn't complain with a high precision sports vehicle with over 100,000 miles that I picked up for less than 20 grand.

yes sounds like a great buy but you will likley sink a few dollars into it to make it right

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eauto
eauto, the car guy
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Customer reply replied 2 months ago
Thank you!
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eauto
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