Subaru Impreza 2.5 06 plate throttle issue help

[ImsterWRX]

Hi

I hadn't driven my car in several weeks and after jump starting it I took it for a spin up the motorway  I noticed when I was driving at motorway speed when I put the clutch down to change gear the revs climbed so quickly to the read line. I was worried it would damage the engine as I know the 2.5 engine has reliability issues.  The engine management light came on and I nursed it home. When I tried starting the car after parking tge Battery was dead.  The Battery was replaced a few months back 

 

Cam anyone help or gad a similar issue 

[Tidgy]

By revs climbing do you mean the clutch is slipping? or throttle sticking?

[ImsterWRX]

No clutch is fine.  A friend suggested it night be a sticking throttle cable 

[Tidgy]

I believe it will be drive by wire rather than cable so could be the throttle position sensor, def need to get it looked at.