Subaru Down On Power

[Jonestheroad]

Just bought a 2002 Subaru Legacy 2.0l to get me through snowy spell. Looks good, full service history etc. Today had chance to drive in non-snowy conditions on the motorway and found that it's really down on power - doesn't want to rev and struggles to get to 70. No warning lights, idles super-smooth, doesn't stall, just has no grunt. Any ideas?

[KJN]

I know it sounds crazy but Try disconnecting the battery overnight then connect up and see if it is ok and for how long it last, don't forget the radio codes.

[TWR]

Expensive if this car goes wrong, 2002 Subaru Legacy 2.0l take the car back to the seller.