Q: My Porsche Cayenne is losing power when i drive. The car vibrates then suddenly the Steering gets locked and I cant accelerate.

asked by on August 17, 2017

My Porsche Cayenne is losing power when i drive. The car vibrates then suddenly the Steering gets locked and I cant accelerate, then i have to turn it off to restart the car.

My car has 87000 miles.
My car has an automatic transmission.

Hi Umarr. Thanks for writing in to YourMechanic.com today. From what we can gather from your information, it’s apparent you have a rather serious safety issue going on with your Porsche. It’s possible that the root source is a damaged or faulty throttle controller. In some cases a damaged throttle controller will cause the engine to have issues with acceleration or cause a "stumbling" effect when the throttle is engaged by the driver. This can result in lack of performance and can be a safety concern if not inspected and repaired quickly. Not having full access to the throttle can lead to accidents and in the worst case, a stuck throttle. However, this would not explain the steering wheel locking. That - to be honest is the baffling part of this question. I think it’s best to have a professional mechanic complete an inspection to determine what is causing this problem.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

I have a 2008 dodge avenger. 2.7. V6. Morning. Run great once warmed up. It starts to misfire n runs very rough. Already changed

Hi Christopher. Typically when an engine misfiring issue occurs after the engine has come to operating temperature, it's due to fuel related components, such as fuel injectors that are clogged or misfiring themselves. This could be due to excessive carbon...

Cat below bank threshold bank2

Hi, thanks for writing in. If you are experiencing a code related to catalytic converter failure I would recommend having your catalytic converter inspected by a local exhaust professional. Once you have determined if your catalytic converter is failing, I...

Transmission fluid leak, power loss, extremely high fuel usage.

Hello - I would focus on the transmission issue first. If you have the transmission fluid back to its proper level, check for problem codes, whether the Check Engine light is lit or not. An auto parts store will read...

Related articles

How to Buy a Porsche Cayenne
The Porsche Cayenne is one of the premier luxury SUVs available on the market today. It is a rare combination of performance and luxury, with dashing good looks thrown in for good measure, and critics and drivers alike praise it...
A Buyer’s Guide to the 2012 Porsche Cayman
The The 2012 Porsche Cayman is a compact sports car designed to deliver a full dose of adrenaline every time you slide into the cockpit. Streamlined and powerful, it also delivers the precise handling that has made Porsche such a...
The Most and Least Expensive Cars to Insure
Car insurance quotes depend on the car make and model. The Honda Odyssey is the least expensive and the Dodge Viper is the most expensive to insure.