Losing power during acceleration

Robbirt · 09-24-2011, 09:18 AM

I have a 2005 A4 Avant Auto 2.0TDI which, for about the last month or so, when I accelerate to over 50mph the car seems to lose power. It actually feels like acceleration drains and the car is being held back however the revs still rise slowly. I just noticed a couple of days ago that when this problem occurs, the cruise control can not be operated. Once the problem occurs, the only way of clearing it is by switching off the engine and restarting the car and when this is done, the problem does not re-occur for the rest of the journey.

When the problem first started it only happened once in a while but it has now got to every journey. It's fine at slower speeds but once I accelerate to between 50-70mph, the problem kicks in.

Any advice would be genuinely appreciated.

nealbaldwick · 08-21-2012, 03:47 AM

This happened on my 2.5L tdi and the dealer replaced a valve in the air supply system to rectify the problem. It was not too expensive and carried a 3 yrs warranty.

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08-21-2012, 03:47 AM	#2
nealbaldwick AudiWorld Newcomer Garage is empty, add now Join Date: Aug 2012 Posts: 2	This happened on my 2.5L tdi and the dealer replaced a valve in the air supply system to rectify the problem. It was not too expensive and carried a 3 yrs warranty.

08-21-2012, 03:47 AM
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