my 2006 posche cayenne 3,2 is stalling. After that it is working normally. It stalls less or nothing when it has full tank. I checked the pumps (pulled the fusses 13 and 14) and they are working. My service doesnt know what is wrong. I have gas installed. So the car starts on feul and than it swithes to gas. So the most driving i do on gas. But the problem is becouse it always starts on petrol.
this could be incorrect fuelling due to a faulty water temp sensor. If this is the problem then the ECU may not be controlling the fuelling as the engine warms - so unplug the sensor and clean the contacts on both sides with some switch / electrical cleaner ( not WD40) and inspect the wiring for any signs of damage to the insulation especially where it runs over other components and through the bulkhead- if this doesn't help consider replacing the sensor as they're not expensive