Why does my Cayenne have a rough idle?
Porsche Cayenne S Rough Idle Stumble can be caused by a number of things, today we talk about ignition misfire diagnosis. Modern engine electronic control units are more complex than ever.
What to do if your Cayenne has no fault?
When dealing with a no fault diagnostic condition, you need to go back to basics of an internal combustion engine, fuel, spark, compression and flow. The vehicle is obviously running well enough to be driven without setting a fault, so were looking for something that is still working, but not as well as it should.
When did Porsche Cayenne 4.5 s engine get rebuilt?
Porsche Cayenne 2004 4.5 S petrol had engine rebuilt 15 months ago pistons/valves /gaskets all replaced. Last week the vehicle started to feel groggy and done oil service and changed all spark plugs. One of the plugs had oil traces on it. The garage that rebuilt engine had only covered the work guarantee for 1 year.
Why is there no check engine light on my Cayenne S?
Just because there is no check engine light on the dash doesn’t mean that there isn’t something wrong with your vehicle. Luckily for this Cayenne S, ignition coils was all it took to get this vehicle running smooth again.
Porsche Cayenne S Rough Idle Stumble can be caused by a number of things, today we talk about ignition misfire diagnosis. Modern engine electronic control units are more complex than ever.
What happens if you lose a vacuum in a Porsche Cayenne?
This typically results in very rough running at idle. Additionally, the air-oil separator will not function due to the loss of vacuum. Over time, this can result in problems when trying to get the car to pass an emissions test.
How to see how a Porsche Cayenne is running?
Our vast experience with German vehicles has taught us that we need to see how this vehicle is actually running. The best way to do so is by removing the spark plugs and “reading” them. On the Cayenne, bank 1 cylinders have an additional amount that greatly increases the amount of time to access the spark plugs.
Porsche Cayenne 2004 4.5 S petrol had engine rebuilt 15 months ago pistons/valves /gaskets all replaced. Last week the vehicle started to feel groggy and done oil service and changed all spark plugs. One of the plugs had oil traces on it. The garage that rebuilt engine had only covered the work guarantee for 1 year.
What happens when one coil fails on a Porsche Cayenne?
A single coil failure is typically a sign of more trouble to come from other coils, so it’s usually best practice to update them all. A failing coil typically stops any spark and sets a misfire code with a completely dead cylinder. This will cause rough running, especially at idle.
Our vast experience with German vehicles has taught us that we need to see how this vehicle is actually running. The best way to do so is by removing the spark plugs and “reading” them. On the Cayenne, bank 1 cylinders have an additional amount that greatly increases the amount of time to access the spark plugs.
What are the problems with a 2004 Porsche Cayenne?
These are a few of the worst and most reported problems that Porsche Cayenne owners have encountered. Owners of the 2004 Cayenne Turbo 4.5L share a common complaint. The coolant lines used in this model are plastic and run down the center of the engine blocks. When the engine heats up, the plastic cannot withstand the high temperature.