Hi all , can anyone help with an issue I have.  I own a 2002 wrx sti Impreza, when revs get to just above 2000rpm they jump to 2500rpm an stick there, I can get the revs to go higher but not come down unless I under hear the car then they idle normally again. The blow off valve works intermittently too.  I’ve removed they blow off valve , intercooler and pipe work to check for leaks to no avail. Any ideas??

Do you know anyone local with a ECU code reader or buy a odb2 bluetooth adapter and use the torque app, to read codes and reset the ECU. .

You could try checking the vacuum lines and intake pipework for cracks and splits .

If not ,Get some brake cleaner and clean the maf ,idle control valve and throttle body , then re grease the throttle body linkage .

As these would be where I'd start looking for those symptoms and its cheaper to clean those things and see if the symptoms get better (or go completely) before buying stuff 

Do you know anyone local with a ECU code reader or buy a odb2 bluetooth adapter and use the torque app, to read codes and reset the ECU. .
You could try checking the vacuum lines and intake pipework for cracks and splits .
If not ,Get some brake cleaner and clean the maf ,idle control valve and throttle body , then re grease the throttle body linkage .
As these would be where I'd start looking for those symptoms and its cheaper to clean those things and see if the symptoms get better (or go completely) before buying stuff 

Was thinking about getting one of these, Do you reckon that’s the best app for the job? Have you got one? If so what OBD2 adapter have you got?


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No mate , mines a 94 sti odb1 running apexi f.c ECU.  I don't think the app shows all codes but most of them .

Afaik it's just the cheapest option to check a odb2 systems codes but think there is a "evo scan" program or called something like it , for laptops and a few cheaper code readers that work .

 

Hopefully someone with a newage will spot this and can chip in