Revs when driving on the motorway once get revs up and drop down to just over 2500 revs it gets sluggish so put foot down and revs high no in-between

SOURCE: high revs when changing up through the gears

it is just one of those cars that drive like that its different but you need to change your driving style to suit

SOURCE: rev high when changing gear up

my friend has same model its normal he said it does it more so when its cold

SOURCE: runs erratically

The idle air valve (located below the throttle body) provides the control for constant idle speed. In order to set the correct air valve opening to achieve constant idle speed, the fuel injection control unit uses information from the air mass meter, throttle valve switch and the ignition control unit (RPM signal) to regulate the output current to the idle air valve. This means that the idle valve is not affected by air leaks or a jammed throttle valve.

Jim Goldsmith

• 2005 Answers
• Posted on Apr 22, 2009

SOURCE: Chrysler 3.5 won`t rev past 2500 rpm?

remove the aircleaner intake hose and, check the intake air control flap for free movement

omaromid

• 332 Answers
• Posted on Feb 11, 2010

SOURCE: Vw polo maintains engine revs when foot is off the accelerator.

You need to check the cable the runs from the gas pedal to the engine, it might be rusty and need some drops of penetrating oil at the point it meets with the engine accelerator valve.