Hi All,
I'm new to the forum so I trust you don't mind a newbe asking daft questions on their first visit !
I have a Q5 2.0L. If I drive 40 miles on a motorway at 70 MPH all is great. I slow down to 30 MPH and drive a few miles the heater light illuminates, flashes and the car goes into limp mode. Switch off the ign and start again all is fine for a few miles when it enters limp mode again. Back on the motorway or any road where the car is driven on and the engine is working harder everything is fine. diagnostics point to a high fuel pressure. Audi cannot find a problem and blame fuel contamination which I know is not the situation as I am running 6 vehicles all filled from the same BP station.
Any thoughts would be greatly appreciated.
Cheers
Derek