I have an intermittent issue with my car (E39 523i SE) which is getting worse. First symptoms a few months ago was that the car would start strangely taking less time that usual or take a much longer time to start - sorry cannot explain this any other way! Driving would then feel very sluggish and response was terrible. On leaving the car for a while and starting again the problem resolved itself.
Recently this has been happening more frequently. Symptoms are the same and usually happens when the car is hot. The turning of the image/starter motor takes longer to start and idle seems rough. Sometimes the car will not hold the revs on start and needs to be started several times whilst holding down the throttle. There is lack of power and only once the car has stalled during driving does the power come back on restart. After this the car behaves normally.
Is this a problem with the ICV, MAF or something more serious?
No warning lights are displayed.
I have noticed that the accelarator sometimes feels heavier - could the throttle cable be the issue?